Flashlight having plural switches and a controller

• US 7,674,003 B2
• Filed: 04/12/2007
• Issued: 03/09/2010
• Est. Priority Date: 04/20/2006
• Status: Active Grant

• Current Assignee: Streamlight, Inc.
• Original Assignee: Streamlight, Inc.
• Inventors: Ziegenfuss, Peter J., Snyder, Mark W., Sharrah, Raymond L.
• Primary Examiner(s): TON, ANABEL
• Application Number:
  US11/734,598
• Publication Number:
  US 20070246335A1
• Time in Patent Office: 1,062 Days
• Field of Search: 362205-208
• US Class Current: 362/205
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: H01H 13/48 using buckling of disc springs
• CPC Class Codes: H01H 13/503 Stacked switches
• CPC Class Codes: H01H 2225/002 superimposed
• CPC Class Codes: H05B 39/041 the light-intensity of the source H05B39/08 takes precedence
• CPC Class Codes: H05B 41/30 in which the lamp is fed by pulses, e.g. flash lamp
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/325 Pulse-width modulation [PWM]
• CPC Class Codes: H05B 45/345 Current stabilisation; Maintaining constant current
• CPC Class Codes: H05B 47/10 Controlling the light source

Abstract

An electrical switch comprises first and second switch elements including respective first and second electrically conductive flexible domes for selectively making electrical connections. The second switch element is disposed adjacent the first switch element with an electrical conductor therebetween. An actuator is movable for exerting force on the second switch element via a spring, and for exerting force on the first switch element via the spring and the second switch element. The second flexible dome may have an actuating force that is less than the actuating force of said first flexible dome.

Claims

1. An electrical flashlight comprising:

a housing having a head end and a tail end and having a cavity for receiving a battery;

an electrical light source disposed toward the head end of said housing;

a first pushbutton switch disposed toward the head end of said housing for providing at least a first switch contact;

a second pushbutton switch disposed toward the tail end of said housing for providing at least a second switch contact; and

a controller disposed in said housing and electrically connected to said electrical light source and to the battery when a battery is provided in the cavity of said housing for selectively coupling electrical power from the battery to said electrical light source,

wherein said controller is electrically connected to said first pushbutton switch and is responsive to closure, or opening, or both, of the first switch contact for controlling electrical power to said electrical light source at least for selectively energizing and de-energizing said electrical light source when the battery is present in the cavity of said housing, and

wherein said controller is electrically connected to said second pushbutton switch and is responsive to closure, or opening, or both, of the second switch contact for controlling electrical power to said electrical light source at least for selectively energizing and de-energizing said electrical light source when the battery is present in the cavity of said housing,

whereby said electrical light source of said flashlight may be selectively energized and de-energized responsive to either or both of said first and second pushbutton switches without electrical power to energize the light source flowing through the first and second pushbutton switches.

2. The electrical flashlight of claim 1 wherein either or both of said first pushbutton switch and said second pushbutton switch comprises:

a first switch element including an electrically conductive first flexible dome for providing a first normally open switch contact and having a first given actuating force, and

a second switch element adjacent said first switch element, said second switch element including an electrically conductive second flexible dome for providing a second normally open switch contact and having a second given actuating force, said second switch element including a flexible electrical conductor between said first switch element and the second flexible dome;

wherein said controller is responsive to closure, or opening, or both, of the first and second normally open switch contacts for controlling the electrical power to said electrical light source.

3. The electrical flashlight of claim 2 wherein either or both of said first pushbutton switch and said second pushbutton switch further comprises:

an actuator movable for exerting force on said second switch element via a spring, and for exerting force on said first switch element via the spring and said second switch element,

wherein the actuator moves a distance for closing the first and second normally open contacts that is substantially longer than an actuating distance of the first and second flexible domes.

4. The electrical flashlight of claim 2 wherein the second given actuating force of the second switch element is less than the first given actuating force of the first switch element.

5. The electrical flashlight of claim 1 wherein said controller controls electrical power to said electrical light source for energizing said electrical light source momentarily, for energizing said electrical light source continuously, for de-energizing said electrical light source, for causing said electrical light source to alternate repetitively between energized and de-energized conditions, for causing said electrical light source to change from a more energized condition to a less energized condition, for causing said electrical light source to change from a less energized condition to a more energized condition, and for any combination of the foregoing.

6. The electrical flashlight of claim 1 wherein said controller controls said electrical light source to momentary ON, to continuous ON, to OFF, to flashing, and to dimming conditions, and optionally to an un-dimming operating condition.

7. A flashlight comprising:

a housing having a head end and a tail end and having a cavity for receiving a battery;

an electrical light source disposed at the head end of said housing;

a first switch disposed toward the head end of said housing;

a second switch disposed toward the tail end of said housing;

an electrical circuit electrically connected to said first and second switches, to said electrical light source and to the battery when a battery is provided in the cavity of said housing for selectively coupling electrical power from the battery to said electrical light source,

wherein said electrical circuit is responsive to said first switch for controlling electrical power to said electrical light source at least for selectively energizing said electrical light source in at least a momentary ON condition and a continuous ON condition and for de-energizing said electrical light source in an OFF condition,

wherein said electrical circuit is responsive to said second switch for controlling electrical power to said electrical light source at least for selectively energizing said electrical light source in at least a momentary ON condition and a continuous ON condition and for de-energizing said electrical light source in an OFF condition;

said electrical circuit including a controller electrically connected for selectively coupling electrical power from the battery to said electrical light source when a battery is in the cavity of said housing,

whereby said flashlight may be selectively energized and de-energized in response to either or both of said first and second switches for operating said electrical light source in at least the momentary ON condition, the continuous ON condition, and the OFF condition.

8. The flashlight of claim 7 wherein:

said controller selectively couples electrical power from the battery to said electrical light source for causing said electrical light source to flash;

or

said controller is located rearward of said electrical light source and forward of the battery cavity of said housing;

or

said controller is located rearward of said electrical light source and forward of the battery cavity of said housing and selectively couples electrical power from the battery to said electrical light source for causing said electrical light source to flash.

9. The flashlight of claim 7 wherein either or both of said first switch and said second switch comprises:

a first switch element including an electrically conductive first flexible dome for providing a first normally open switch contact and responsive to a first actuating force, and

a second switch element adjacent said first switch element, said second switch element including an electrically conductive second flexible dome for providing a second normally open switch contact and responsive to a second actuating force, said second switch element including a flexible electrical conductor between said first switch element and the second flexible dome;

wherein said electrical circuit is responsive to closure, or opening, or both, of the first and second normally open switch contacts for controlling the electrical power to said electrical light source.

10. The flashlight of claim 9 wherein at least one of said first switch and said second switch further comprises:

an actuator movable for exerting force on said second switch element via a spring, and for exerting force on said first switch element via the spring and said second switch element,

wherein the actuator moves a distance for closing the first and second normally open contacts that is substantially longer than an actuating distance of the first and second flexible domes.

11. The flashlight of claim 9 wherein the second actuating force of the second switch element is less than the first actuating force of the first switch element.

12. The flashlight of claim 7 wherein said electrical circuit controls electrical power to said electrical light source for causing said electrical light source to alternate repetitively between energized and de-energized conditions, or for causing said electrical light source to change from a more energized condition to a less energized condition, or for causing said electrical light source to change from a less energized condition to a more energized condition, or for any combination of the foregoing.

13. The flashlight of claim 7 wherein said electrical circuit responds to said first switch, to said second switch, and to both said first and second switches for energizing and de-energizing said electrical light source to a flashing condition and optionally to a dimmed condition and to an un-dimmed condition.

14. The flashlight of claim 7 wherein said electrical circuit and said controller selectively energize and de-energize said electrical light source responsive to either or both of said first and second switches without electrical power to energize the light source flowing through the first and second switches.

15. The flashlight of claim 7 wherein said electrical circuit responds to said first switch, to said second switch, and to both said first and second switches for placing said electrical light source to a momentary ON condition, to a continuous ON condition, to an OFF condition, to a flashing condition, and optionally to an dimmed condition and to an un-dimmed condition.

16. A flashlight comprising:

a housing having a head end and a tail end and having a cavity for receiving a battery;

an electrical light source disposed at the head end of said housing;

a first switch disposed toward the head end of said housing;

a second switch disposed toward the tail end of said housing; and

a controller;

wherein said controller, said first and second switches, said electrical light source and the battery are electrically connected in circuit for selectively coupling electrical power from the battery to said electrical light source when the battery is in the cavity of said housing,

wherein said electrical light source is responsive to said first switch for being selectively energized in at least a momentary ON condition and a continuous ON condition and de-energized in an OFF condition when the battery is in the cavity of said housing,

wherein said electrical light source is responsive to said second switch for being selectively energized in at least a momentary ON condition and a continuous ON condition and de-energized in an OFF condition when the battery is in the cavity of said housing,

whereby said flashlight may be selectively energized and de-energized responsive to either or both of said first and second switches for operating said electrical light source in at least a momentary ON condition, a continuous ON condition, and an OFF condition.

17. The flashlight of claim 16 wherein, when a battery is in the cavity of said housing, applying a first pressure on said first switch or on said second switch causes said electrical light source to produce light and releasing the first pressure causes said electrical light source to cease to produce light, and wherein applying a second pressure greater than the first pressure on said first switch or on said second switch and releasing the greater second pressure causes said electrical light source to continue to produce light.

18. The flashlight of claim 16 wherein said first switch and said second switch are biased to respective OFF states, wherein at least a first pressure must be applied to said first switch or to said second switch to actuate said first switch or said second switch, respectively, to an ON state.

19. The flashlight of claim 16 wherein the flashlight has at least two operating conditions, a first operating condition being the momentary ON condition initiated by actuating said first switch or said second switch with a first pressure and thereafter releasing the first pressure, and a second operating condition being a continuous ON condition initiated by actuating said first switch or said second switch with a pressure greater than the first pressure.

20. The flashlight of claim 16 wherein said electrical light source is responsive to said controller for operating in a flashing condition, and optionally in a dimmed condition and an un-dimmed condition.

21. The flashlight of claim 16 wherein:

said controller selectively couples electrical power from the battery to said electrical light source for causing said electrical light source to flash;

or

said controller is located rearward of said electrical light source and forward of the battery cavity of said housing;

or

said controller is located rearward of said electrical light source and forward of the battery cavity of said housing and selectively couples electrical power from the battery to said electrical light source for causing said electrical light source to flash.

22. The flashlight of claim 16 wherein either or both of said first pushbutton switch and said second pushbutton switch comprises:

a first switch element including an electrically conductive first flexible dome providing a first normally open switch contact responsive to a first actuating force, and

a second switch element adjacent said first switch element, said second switch element including an electrically conductive second flexible dome providing a second normally open switch contact responsive to a second actuating force, said second switch element including a flexible electrical conductor between said first switch element and the second flexible dome;

wherein said controller is responsive to closure, or opening, or both, of the first and second normally open switch contacts for controlling the electrical power to said electrical light source.

23. The flashlight of claim 22 wherein either or both of said first switch and said second switch further comprises:

an actuator movable for exerting force on said second switch element via a spring, and for exerting force on said first switch element via the spring and said second switch element,

wherein the actuator moves a distance for closing the first and second normally open contacts that is substantially longer than an actuating distance of the first and second flexible domes.

24. The flashlight of claim 22 wherein the second actuating force of the second switch element is less than the first actuating force of the first switch element.

25. The flashlight of claim 16 wherein said controller controls electrical power to said electrical light source for causing said electrical light source to alternate repetitively between energized and de-energized conditions, or for causing said electrical light source to change from a more energized condition to a less energized condition, or for causing said electrical light source to change from a less energized condition to a more energized condition, or for any combination of the foregoing.

26. The flashlight of claim 16 wherein said controller responds to said first switch, to said second switch, and to both said first and second switches for energizing and de-energizing said electrical light source to a flashing condition and optionally to a dimmed condition and an un-dimmed condition.

27. The flashlight of claim 16 wherein said controller selectively energizes and de-energizes said electrical light source responsive to either or both of said first and second switches without electrical power to energize the light source flowing through the first and second switches.

28. The flashlight of claim 16 wherein said controller responds to said first switch, to said second switch, and to both said first and second switches for placing said electrical light source to momentary ON, to continuous ON, and to OFF conditions, to a flashing condition, and optionally to a dimmed condition and to an un-dimmed condition.

29. A flashlight comprising:

a housing having a head end and a tail end and having a cavity for receiving a battery;

a light emitting diode light source disposed at the head end of said housing;

a first pushbutton switch disposed at a relatively forward location of said housing for selectively actuating said light emitting diode light source;

a second pushbutton switch disposed at a relatively rearward location of said housing for selectively actuating said light emitting diode light source; and

a controller disposed rearward of said light emitting diode light source and forward of the battery cavity of said housing, wherein said controller is electrically connected to said light emitting diode light source and to the battery for selectively coupling electrical power from the battery to said electrical light source, when the battery is in the cavity of said housing,

wherein said controller, said first pushbutton switch, said second pushbutton switch, and said light emitting diode light source are electrically connected in an electrical circuit, and wherein the battery is electrically connected in the electrical circuit when the battery is in the battery cavity of said housing,

wherein the electrical circuit is responsive to said first pushbutton switch for controlling electrical power from the battery to said light emitting diode light source selectively energizing and de-energizing said electrical light source at least in a momentary ON condition and in a continuous ON condition, when the battery is in the cavity of said housing,

wherein the electrical circuit is responsive to said second pushbutton switch for controlling electrical power from the battery to said light emitting diode light source for selectively energizing and de-energizing said electrical light source at least in a momentary ON condition and in a continuous ON condition, when the battery is in the cavity of said housing,

whereby said electrical light source of said flashlight may be selectively energized and de-energized responsive to either or both of said first and second pushbutton switches, and

wherein said controller selectively causes said light emitting diode light source to flash ON and OFF.

30. The flashlight of claim 29 wherein said second pushbutton switch is at the tail end of said housing.

31. The flashlight of claim 29 wherein, when a battery is in the cavity of said housing, applying a first pressure to said first pushbutton switch or to said second pushbutton switch causes said light emitting diode light source to produce light and releasing the first pressure causes said light emitting diode light source to cease to produce light, and wherein applying a second pressure greater than the first pressure to said first pushbutton switch or to said second pushbutton switch and releasing the greater second pressure causes said light emitting diode light source to continue to produce light.

32. The flashlight of claim 29 wherein said first pushbutton switch and said second pushbutton switch are biased to respective OFF states, wherein at least a first pressure must be applied to said first pushbutton switch or to said second pushbutton switch to actuate said first pushbutton switch or said second pushbutton switch, respectively, to an ON state.

33. The flashlight of claim 29 wherein the flashlight has at least two operating conditions, a first operating condition being the momentary ON condition initiated by actuating said first pushbutton switch or said second pushbutton switch with a first pressure and thereafter releasing the first pressure, and a second operating condition being a continuous ON condition initiated by actuating said first pushbutton switch or said second pushbutton switch with a pressure greater than the first pressure.

34. The flashlight of claim 29 wherein said light emitting diode light source is responsive to said controller for operating in a flashing condition, and optionally in a dimmed condition and an un-dimmed condition.

35. The flashlight of claim 29 wherein either or both of said first pushbutton switch and said second pushbutton switch further comprises:

one or more switch elements; and

an actuator movable for exerting force on the one or more switch elements via a spring,

wherein the actuator moves a distance for closing the one or more switch elements that is substantially longer than an actuating distance of the one or more switch elements.

36. The flashlight of claim 29 wherein said controller controls electrical power to said light emitting diode light source for energizing said light emitting diode light source momentarily, or for energizing said light emitting diode light source continuously, or for de-energizing said light emitting diode light source, or for causing said light emitting diode light source to alternate repetitively between energized and de-energized conditions, or for causing said light emitting diode light source to change from a more energized condition to a less energized condition, or for causing said light emitting diode light source to change from a less energized condition to a more energized condition, or for any combination of the foregoing.

37. The flashlight of claim 29 wherein said controller responds to said first pushbutton switch, to said second pushbutton switch, and to both said first and second pushbutton switches for energizing and de-energizing said light emitting diode light source to momentary ON, to continuous ON, and to OFF conditions, and optionally to a dimmed condition and to an un-dimmed condition.

38. The flashlight of claim 29 wherein said controller selectively energizes and de-energizes said light emitting diode light source responsive to either or both of said first and second pushbutton switches without electrical power to energize said light emitting diode light source flowing through the first and second pushbutton switches.

39. The flashlight of claim 29 wherein said controller responds to said first pushbutton switch, to said second pushbutton switch, and to both said first and second pushbutton switches for placing said light emitting diode light source to a momentary ON condition, to a continuous ON condition, and to an OFF condition, and optionally to a flashing condition, to a dimmed condition and to an un-dimmed condition.

40. A flashlight comprising:

a housing for a power source, the housing having a front end and a tail end at an opposite end of the housing;

a light emitting source at the front end of the housing;

an electrical circuit for connecting the power source to the light emitting source, the circuit having a first switch located toward the front end of the housing and a second switch located on the tail end of the housing, wherein the circuit allows the light emitting source to be turned on using the first switch and to be turned off using the second switch and vice versa, and wherein each of the switches also operates in the circuit independently of the other switch so as to be able to independently switch the light emitting source on or off; and

a controller in the electrical circuit and connected to the power source and to the light emitting source for selectively controlling the operation of the light emitting source,

wherein both the first switch and the second switch includes a momentary ON function, the momentary ON function being for closing the electrical circuit when a first pressure is used to operate either of the switches and for opening the electrical circuit when the first pressure is reduced.

41. The flashlight of claim 40 wherein the controller selectively controls the light emitting source to flash ON and OFF.

42. A flashlight comprising:

a housing for a power source, the housing having a front end and a tail end at an opposite end of the housing;

a light emitting source disposed toward the front end of the housing;

an electrical circuit for connecting the power source to the light emitting source, the circuit having a first switch located toward the front end of the housing and a second switch located on the tail end of the housing, wherein the circuit allows the light emitting source to be turned ON using the first switch and to be turned OFF using the second switch and vice versa, and wherein each of the switches also operates in the circuit independently of the other switch so as to be able to independently switch the light emitting source ON or OFF; and

a controller in the electrical circuit and connected to the power source and to the light emitting source for selectively controlling the operation of the light emitting source,

wherein both of the first switch and the second switch includes a momentary ON function, the momentary ON function being for closing the electrical circuit when pressure used to operate the switch reaches a first pressure and for opening the electrical circuit when the pressure is reduced below the first pressure, and

wherein both of the first switch and the second switch are biased toward an OFF state, such that the bias must be overcome by application of pressure greater than a second pressure to change the at least one switch from the OFF state to an ON state, the second pressure being greater than the first pressure.

43. The flashlight of claim 42 wherein the controller selectively controls the light emitting source to flash ON and OFF.