Method of resetting thermostat used with temperature controlled charging

• US 3,928,792 A
• Filed: 02/24/1975
• Issued: 12/23/1975
• Est. Priority Date: 02/24/1975
• Status: Expired due to Term

• Current Assignee: Gates Energy Products, Inc. (Schneider Electric SE)
• Original Assignee: Ferdinand Henry Mullersman, James Edward Sarisky
• Inventors: Mullersman, Ferdinand Henry, Sarisky, James Edward
• Primary Examiner(s): Miller, J. D.
• Assistant Examiner(s): Hickey, Robert J.
• Application Number:
  US05/552,289
• Time in Patent Office: 302 Days
• Field of Search: 320/2-5,35,36,54 335/143 337/348
• US Class Current: 320/154
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 50/581 in response to temperature
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A cordless appliance comprising a rechargeable battery power supply adapted for temperature-controlled fast charging; a manual reset thermostat thermally coupled to the battery for terminating fast charging of the battery; and a switching mechanism for simultaneously connecting the battery power supply to a load and for resetting the thermostat to a closed condition, thereby permitting fast charging of the battery upon the connection of the appliance to a charging source.

Claims

1. A battery-operated apparatus comprising:

a. an electrically operable load;

b. a rechargeable battery for energizing said load, c. temperature-actuated switch means, thermally coupled to battery, said switch having first and second positions, said switch automatically shifting from said first to said second position responsive to an increase of the temperature of said battery above a predetermined level;

d. a switch mechanism for simultaneously energizing said load and for resetting said temperature-actuated switch to said first position.

2. The apparatus of claim 1 further comprising an appliance charging circuit for connecting said battery to a charging source through said temperature-actuated switch.

3. The apparatus of claim 1 wherein said temperature-actuated switch is a manual reset thermostat.

4. A battery-operated apparatus comprising:

a. an electrically operable laod;

b. a rechargeable battery for energizing said load;

c. temperature-actuated switch means, thermally coupled to battery, said switch having first and second positions, said switch automatically shifting from said first to said second position responsive to an increase of the temperature of said battery above a predetermined level;

d. trigger switch means, connected in circuit between said battery and said load, for energizing and deenergizing said load in first and second trigger positions, respectively; and

e. linking means for shifting said temperature switch means from said second position to said first position responsive to the shifting of said trigger means from one of said trigger positions to the other of said trigger positions.

5. The apparatus of claim 4 wherein said temperature switch means is a thermostat, said thermostat comprising a reset means postitioned for cooperation with said linking means to reset said thermostat to said first position.

6. The apparatus of claim 4 wherein said one and said other trigger positions are said second and said first trigger positions.

7. The apparatus of claim 4 further comprising terminal means for connection to a battery charger;

and charge circuit means for forming an electrical path between said terminal and said battery, said temperature switch means connected in said circuit means for controlling the transmission of current on said circuit means, said first and second temperature switch positions being closed and open switch positions.

8. A cordless appliance comprising:

a. a case having an opening therein;

b. an electrically operable load;

c. a rechargeable battery mounted in said housing;

d. a thermostatic switch, thermally coupled to said battery, the contacts of said switch having open and closed positions, said switch automatically shifting from said closed position to said open position responsive to an increase of the temperature of said battery above a predetermined level, said switch comprising a reset button for shifting the contacts of said switch from said open position to said closed, and said reset button being located in said case in a position preventing direct manual access thereto;

e. a trigger switch means, connected in circuit between said batterY and said load, said trigger switch having open and closed positions for deenergizing and energizing said load, respectively, and said trigger means having a portion thereof disposed adjacent said opening and being movable by the application of pressure to change the position of said trigger switch means; and

f. linking means for engaging said reset button to shift said contacts from said open to said closed position responsive to the shifting of said trigger means from said open position to said closed position.