Electric cordless toothbrush

• US 3,274,631 A
• Filed: 03/20/1964
• Issued: 09/27/1966
• Est. Priority Date: 03/20/1964
• Status: Expired due to Term

• Current Assignee: Albert R. Spohr
• Original Assignee: Albert R. Spohr
• Inventors: Spohr, Albert R.
• Application Number:
  US04/353,327
• Time in Patent Office: 921 Days
• US Class Current: 15/22.1
• CPC Class Codes: A61C 17/22 with brushes, cushions, cups, or the like brush bodies, e.g. arrangements of the bristles A46B
• CPC Class Codes: A61C 17/224 Electrical recharging arrangements
• CPC Class Codes: A61C 17/225 Handles or details thereof
• CPC Class Codes: A61C 17/3418 Rotation around the axis of the toothbrush handle
• CPC Class Codes: A61C 2204/002 using batteries
• CPC Class Codes: H01H 13/08 Casing of switch constituted by a handle serving a purpose other than the actuation of the switch
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Claims

2. A POWER UNIT FOR AN ELECTRIC TOOTHBRUSH COMPRISING A GENERALLY CYLINDRICAL CASING HAVING AN OPEN END AND A CLOSED END, MEANS DEFINING AN OPENING IN SAID CLOSED END, A SUBASSEMBLY ADAPTED TO BE INSERTED INTO SAID CASING THROUGH SAID OPEN END, SAID SUBASSEMBLY COMPRISING AN ELECTRIC MOTOR, A DIRVING MECHANISM, AN ELECTRIC SWITCH AND SUPPORT MEANS, A HOUSING FOR SAID MOTOR OPEN AT ONE END, SAID SUPPORT MEANS COMPRISING A MECHANISM SUPPORT FOR SAID DRIVING MECHANISM, SAID SUPPORT MEANS INCLUDING A LOWER PORTION CLOSING THE OPEN END OF SAID MOTOR HOUSING AND AN ELONGATED U-SHAPED UPPER PORTION, SAID USHAPED UPPER PORTION BEING GENERALLY CONCETRIC WITH SAID CYLINDRICAL CASING, AN OUTPUT DRIVE SHAFT DRIVINGLY CONNECTED TO SAID MOTOR THROUGH SAID DRIVING MECHANISM ADAPTED TO EXTEND THROUGH SAID OPENING UPON INSERTION OF SAID SUBASSEMBLY INTO SAID CASING, AND MEANS FOR CLOSING THE OPEN OF SAID CASING.