Squeezable flashlight

• US 4,731,712 A
• Filed: 12/10/1986
• Issued: 03/15/1988
• Est. Priority Date: 12/10/1986
• Status: Expired due to Term

• Current Assignee: Ralston Purina Company (Nestle SA)
• Original Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Inventors: Amthor, Helmut K.
• Primary Examiner(s): Scott, Samuel
• Assistant Examiner(s): KAMEN, NOAH P
• Application Number:
  US06/940,129
• Time in Patent Office: 461 Days
• Field of Search: 362/157, 362/189, 362/196, 362/200, 362/201
• US Class Current: 362/189
• CPC Class Codes: F21L 2/00 Systems of electric lighting devices systems employing both electric and non-electric light sources or exchangeable light sources F21L27/00

Abstract

A flashlight includes a flexible housing of mating halves. A lamp and two batteries are arranged such that the lamp terminals are in contact with the battery terminals. The lamp is operated by squeezing the housing which in turn bends a switch member that completes the circuit between the batteries and the lamp.

Claims

1. A flashlight comprising:

a flashlight housing;

a pair of batteries within the housing, each battery having a terminal disposed on an end thereof and a terminal defined by a battery casing;

a lamp including a body comprising a central contact terminal disposed at an end thereof and a generally cylindrical casing terminal;

first means for securing at least a portion of the lamp within the flashlight housing;

second means for retaining the batteries in an offset side-by-side relationship within the housing and in a relationship with respect to the lamp such that said central contact terminal of the lamp contacts a first said terminal of a first of the batteries and said cylindrical casing terminal of the lamp contacts a second said terminal of the second of the batteries, the second terminal having a polarity opposite to the first terminal;

third means for electrically insulating the casings of the batteries from each other; and

fourth means for electrically connecting the batteries so that current flows through the lamp, said fourth means being rendered operative when force is applied to a portion of said housing having at least limited flexibility.

2. The flashlight housing as in claim 1, wherein the fourth means comprises a resilient conductive contact arm electrically connected to the terminal of the second of the batteries disposed on an end thereof, which contact arm extends over the casing of the first of the batteries, wherein the contact arm is located under the portion of the flashlight housing that has at least limited flexibility, so that when force is applied to the flexible portion the contact arm is urged against and contacts the casing of the first of the batteries.

3. The flashlight as in claim 1, wherein the first terminal of the first of the batteries is the terminal disposed on an end thereof and the second terminal of the second of the batteries is the casing of the second of the batteries.

4. The flashlight as in claim 3, further comprising fifth means for biasing the central contact terminal of the lamp and the first terminal of the first of the batteries toward each other.

5. The flashlight as in claim 4, wherein the fifth means comprises a first strip of bent resilient material in the form of an arc.

6. The flashlight as in claim 5, wherein the first strip of bent resilient material is in the form of a U-shaped arc.

7. The flashlight as in claim 3, further comprising sixth means for biasing the second of the batteries, the sixth means being in contact with the terminal of the second of the batteries disposed on an end thereof, wherein the fourth means comprises a resilient conductive contact arm extending over the casing of the first of the batteries and under the portion of the flashlight housing that has at least limited flexibility, and wherein the contact arm is electrically connected to the sixth means.

8. The flashlight as in claim 7, wherein the sixth means comprises a second strip of bent resilient material in the form of an arc, and wherein the resilient conductive contact arm is integrally connected to the second strip.

9. The flashlight as in claim 8, wherein the second strip of bent resilient material is in the form of a U-shaped arc.

10. The flashlight as in claim 3, wherein the second means includes at least one projection inside the housing that urges the cylindrical contact of the lamp toward the casing of the second of the batteries.

11. The flashlight as in claim 1, wherein the third means for electrically insulating the casings of the batteries from each other comprises a dividing wall located in the flashlight housing between the batteries.

12. The flashlight as in claim 2, further comprising seventh means for biasing the resilient conductive contact arm away from the casing of the first of the batteries.

13. The flashlight as in claim 12, wherein the seventh means comprises a support tab that urges the resilient conductive contact arm away from the casing of the first of the batteries.

14. The flashlight as in claim 11, wherein the fourth means comprises a resilient conductive contact arm electrically connected to the terminal of the second of the batteries disposed on an end thereof, which contact arm extends over the casing of the first of the batteries, wherein the contact arm is located under the portion of the flashlight housing having at least limited flexibility, so that when force is applied to the flexible portion the contact arm is urged against and contacts the casing of the first of the batteries.

15. The flashlight as in claim 14, further comprising seventh means for biasing the resilient conductive contact arm away from the casing of the first of the batteries.

16. The flashlight as in claim 15, wherein the seventh means comprises a support tab, mounted on the dividing wall, to urge the resilient conductive contact arm away from the casing of the first of the batteries.

17. The flashlight as in claim 1, wherein the lamp bulb is configured so that a portion distal from the base section necks down to a diameter narrower than a portion proximate to the base section, and the first means comprises an aperture in the housing having a chamfered seat about its periphery that mates with the necked-down portion of the lamp bulb.

18. A flashlight comprising:

a flashlight housing, wherein a portion of the housing has at least limited flexibility;

a pair of batteries in the housing, each battery having a first terminal disposed on an end of the battery, which terminal is insulated from a casing of the battery that is conductive and that acts as a second terminal of the battery;

a lamp having a lamp bulb fastened to a base section that comprises a first cylindrical contact terminal terminating in and insulated from a second central contact terminal, the lamp bulb being configured so that a portion distal from the base section necks down to a diameter narrower than a portion proximate to the base section;

the housing defining an aperture having a chamfered seat about its periphery that mates with the necked-down portion of the lamp globe so as to secure the base section of the lamp within the flashlight housing;

means for retaining the batteries in an offset side-by-side relationship within the housing and in a relationship with respect to the lamp such that the second contact terminal of the lamp contacts the first terminal of a first of the batteries and the first cylindrical contact of the lamp contacts the casing of the second of the batteries;

a dividing wall located in the flashlight housing between the batteries that electrically insulates the casings of the batteries from each other;

a resilient conductive contact arm electrically connected to the first central terminal of the second of the batteries, which contact arm extends over the casing of the first of the batteries, wherein the contact arm is located under the portion of the flashlight housing of at least limited flexibility; and

a support tab, mounted on the dividing wall under the resilient conductive contact arm, which holds the contact arm away from the casing of the first of the batteries.