Mechanical toothbrush

• US 3,160,902 A
• Filed: 02/08/1963
• Issued: 12/15/1964
• Est. Priority Date: 02/08/1963
• Status: Expired due to Term

• Current Assignee: Robert Aymar Julian
• Original Assignee: Robert Aymar Julian
• Inventors: ROBERT AYMAR JULIAN
• Application Number:
  US04/257,239
• Time in Patent Office: 676 Days
• US Class Current: 15/22.1
• CPC Class Codes: A61C 17/3418 Rotation around the axis of the toothbrush handle
• CPC Class Codes: A61C 17/3445 Translation along the axis of the toothbrush handle
• CPC Class Codes: A61C 17/3472 with combined movements of the brush body
• CPC Class Codes: Y10T 74/18232 Crank and lever
• CPC Class Codes: Y10T 74/18248 Crank and slide

Claims

1. A MECHANICAL TOOTHBRUSH COMPRISING AN ELONGATED HOLLOW CASING HAVING AN OPENING AT ONE END, SAID OPENING BEING OFFSET WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID CASING, A BRUSH ROD SLIDABLY SUPPORTED IN SAID CASING AND EXTENDING THROUGH AND BEYOND SAID OPENING, A CRANK PIN FIRMLY CONNECTED WITH SAID BRUSH ROD AND EXTENDING PERPENDICULAR THERETO, A GEAR HAVING A PLAIN LOWER FACE AND AN OPENING IN SAID LOWER FACE LOCATED ECCENTRICALLY WITH RESPECT TO THE CENTER OF SAID GEAR, MEANS FOR SUPPORTING SAID GEAR IN SAID CASNG FOR ROTATION IN A PLANE PARALLEL TO THE AXIS OF SAID CASING, SAID CRANK PIN EXTENDING INTO THE ECCENTRIC OPENING IN SAID GEAR, MEANS FOR ROTATING SAID GEAR WHEREBY SAID CRANK PIN TRANSMITS RECIPROCATING AND OSCILLATING MOVEMENT TO SAID BRUSH ROD, AND A BRUSH ELEMENT CARRIED BY SAID BRUSH ROD.