Variable speed drive transmission

• US 3,229,538 A
• Filed: 09/25/1961
• Issued: 01/18/1966
• Est. Priority Date: 09/25/1961
• Status: Expired due to Term

• Current Assignee: Henry Schottler
• Original Assignee: Henry Schottler
• Inventors: HENRY SCHOTTLER
• Application Number:
  US04/140,397
• Time in Patent Office: 1,576 Days
• US Class Current: 476/8
• CPC Class Codes: F16H 13/10 Means for influencing the pressure between the members
• CPC Class Codes: F16H 15/04 Gearings providing a continuous range of gear ratios
• CPC Class Codes: F16H 15/38 with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
• CPC Class Codes: F16H 15/44 in which two members of non-uniform effective diameter directly co-operate with one another
• CPC Class Codes: F16H 61/6647 controlling shifting exclusively as a function of torque

Claims

1. IN A VARIABLE SPEED DRIVE TRANSMISSION INCLUDING A DRIVE SHAFT AND A DRIVEN SHAFT WITH A BALL AND RACE TYPE FRICTIONAL DRIVE CHANGE SPEED MECHANISM HAVING DRIVE ELEMENTS IN FRICTIONAL ENGAGEMENT DRIVINGLY INTERCONNECTING SAID SHAFTS, THE IMPROVEMENT COMPRISING MECHANISM AUTOMATICALLY CONTROLLING DRIVE PRESSURE BETWEEN SAID DRIVE ELEMENTS IN ACCORDANCE WITH THE COEFFICIENT OF FRICTION BETWEEN TWO OF SAID DRIVE ELEMENTS.