RECESSED CONCENTRIC CHARGING CONTACTS FOR ELECTRIC CORDLESS TOOTHBRUSH

• US 3,463,994 A
• Filed: 01/28/1966
• Issued: 08/26/1969
• 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:
  US04/523,681
• Time in Patent Office: 1,306 Days
• US Class Current: 320/115
• 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