Toroidal transmission mechanism with torque loading cam means

• US 3,184,983 A
• Filed: 10/30/1963
• Issued: 05/25/1965
• Est. Priority Date: 10/30/1963
• Status: Expired due to Term

• Current Assignee: Charles E. Kraus
• Original Assignee: Charles E. Kraus
• Inventors: Kraus, Charles E.
• Application Number:
  US04/320,152
• Time in Patent Office: 573 Days
• US Class Current: 476/41
• CPC Class Codes: F16H 13/14 for automatically varying the pressure mechanically
• 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

Claims

2. A VARIABLE SPEED TRANSMISSION COMPRISING (A) COAXIAL INPUT AND OUTPUT MEMBERS HAVING FACING TORIC SURFACES;

(B) A PLURALITY OF CIRCUMFERENTIALLY-SPACED ROLLERS DISPOSED BETWEEN AND IN CONTACTING ENGAGEMENT WITH SAID TORIC SURFACES FOR TRANSMITTING TORQUE FROM SAID INPUT MEMBER TO SAID OUTPUT MEMBER AND SUPPORTED FOR SPEED-RATIO-CHANGING MOVEMENT ACROSS SAID TORIC SURFACES TO VARY THE SPEED OF SAID OUTPUT MEMBER RELATIVE TO THE SPEED OF SAID INPUT MEMBER;

(C) CAM MEANS SUPPORTED ADJACENT SAID INPUT MEMBER FOR TRANSMITTING AN AXIAL LOADING FORCE AGAINST SAID INPUT MEMBER IN ACCORDANCE WITH INPUT TORQUE SUPPLIED TO SAID TRANSMISSION AND INCLUDING A FIRST MEMBER, A PLURALITY OF CONICALLY-SHAPED CIRCUMFERENTIALLYSPACED CAM ROLLERS AND A SECOND MEMBER, AND SAID FIRST MEMBER HAVING CAM SURFACES THEREON ENGAGING EACH SAID CAM ROLLER IN STRAIGHT LINE CONTACT OVER SUBSTANTIALLY THE ENTIRE LENGTH OF SAID CAM ROLLER AND SAID SECOND MEMBER HAVING A PLANE CURVED SURFACE THERE ON ENGAGING EACH SAID CAM ROLLER ONLY AT A PORTION SUBSTANTIALLY AT THE CENTER OF THE CONICAL SURFACE OF SAID CAM ROLLER.