Abstract 1,002,192. Friction clutches; controlling clutches. BORG-WARNER CORPORATION. Dec. 18, 1962 [Jan. 2, 1962], No. 47735/62. Headings F2C and F2L. Friction clutches.-Radially arranged clutch levers 54, fulcrumed at their outer ends by struts 56 in a cover 16 fast with a driving flywheel 14, are pivoted so that intermediate part-cylindrical surfaces 72 on them roll over corresponding flat surfaces 74 on a pressure plate 26 thus caused to move axially for engagement of a driven clutch disc 24, tangentiallyarranged multi-strip springs 42 between the pressure plate and the cover opposing clutch engagement. In their unstressed condition the strip springs 42 are of bowed shape, and are straightened by clutch engagement. The intermediate surfaces 72 on the radial levers 54 are formed at the edges of holes receiving lugs on the back of the pressure plate 26 and so formed as to oppose centrifugally-induced radial movement of the levers. Controlling clutches.-Clutch-engaging thrust on a rod 106, Fig. 8, e.g. by a servomotor (not shown), turns a lever 95 about a fulcrum strut 97 mounted upon a fixed support 99 so that the inner bifurcated lever end 95a, provided with pins &c. 100, slides axially a thrust bearing 90 for pivoting of the radial levers 54.
A CLUTCH DEVICE, COMPRISING IN COMBINATION: ROTATABLE DRIVING AND DRIVEN MEANS, ROTATABLE PRESSURE PLATE MEANS ADAPTED TO URGE SAID DRIVING AND DRIVEN MEANS TOGETHER FOR CONJOINT ROTATION AND HAVING AT LEAST ONE FLAT SURFACE PARALLEL TO THE PLANE OF ROTATION AND AT LEAST ONE SURFACE GENERALLY TRANSVERSE TO THE PLANE OF ROTATION; A COVER PLATE DRIVINGLY CONNECTED WITH SAID DRIVING MEANS; MEANS COMPRISING A PLURALITY OF RESILIENT STRAPS INTERCONNECTING SAID PRESSURE PLATE MEANS AND SAID COVER PLATE, EACH STRAP BEING DISPOSED CHORDALLY WITH RESPECT TO A CIRCUMFERENCE INSCRIBING SAID CLUTCH DEVICE, EACH STRAP HAVING A PREFORMED CONDITION SUCH THAT OPPOSED ENDS THEREOF ARE OFFSET RELATIVE TO THE PLANE OF ROTATION OF SAID PRESSURE PLATE MEANS, SAID STRAPS BEING ASSEMBLED IN SAID DEVICE TENDING TO URGE SAID PRESSURE PLATES MEANS OUT OF ENGAGEMENT WITH SAID DRIVEN MEANS AND TOWARD SAID OFFSET CONDITION; STOP MEANS ADATPED TO LIMIT MOVEMENT OF SAID PRESSURE PLATE MEANS DURING DISENGAGEMENT SO THAT SAID STRAPS WILL BE FLEXED FROM THEIR PRE-FORMED CONDITION EVEN DURING THE FULLY DISENGAGED CONDITION OF THE PRESSURE PLATE MEANS; A PLURALITY OF LEVERS MOUNTED ADJACENT SAID COVER PLATE AND ADJACENT SAID COVER PLATE MEANS ADAPTED FOR URGING SAID PRESSURE PLATE MEANS TOWARDS SAID DRIVEN MEANS, EACH OF SAID LEVERS HAVING ONE END ADAPTED TO RECEIVE AN ENGAGING FORCE SUFFICIENT TO OVERCOME THE EFFECT OF SAID
Claim 2
Dependent Claim
222 words
A CLUTCH DEVICE, COMPRISING IN COMBINATION: ROTATABLE DRIVING AND DRIVEN MEANS, ROTATABLE PRESSURE PLATE MEANS ADAPTED TO URGE SAID DRIVING AND DRIVEN MEANS TOGETHER FOR CONJOINT ROTATION AND HAVING AT LEAST ONE FLAT SURFACE PARALLEL TO THE PLANE OF ROTATION AND AT LEAST ONE SURFACE GENERALLY TRANSVERSE TO THE PLANE OF ROTATION; A COVER PLATE DRIVINGLY CONNECTED WITH SAID DRIVING MEANS; MEANS COMPRISING A PLURALITY OF RESILIENT STRAPS INTERCONNECTING SAID PRESSURE PLATE MEANS AND SAID COVER PLATE, EACH STRAP BEING DISPOSED CHORDALLY WITH RESPECT TO A CIRCUMFERENCE INSCRIBING SAID CLUTCH DEVICE, EACH STRAP HAVING A PREFORMED CONDITION SUCH THAT OPPOSED ENDS THEREOF ARE OFFSET RELATIVE TO THE PLANE OF ROTATION OF SAID PRESSURE PLATE MEANS, SAID STRAPS BEING ASSEMBLED IN SAID DEVICE TENDING TO URGE SAID PRESSURE PLATES MEANS OUT OF ENGAGEMENT WITH SAID DRIVEN MEANS AND TOWARD SAID OFFSET CONDITION; STOP MEANS ADATPED TO LIMIT MOVEMENT OF SAID PRESSURE PLATE MEANS DURING DISENGAGEMENT SO THAT SAID STRAPS WILL BE FLEXED FROM THEIR PRE-FORMED CONDITION EVEN DURING THE FULLY DISENGAGED CONDITION OF THE PRESSURE PLATE MEANS; A PLURALITY OF LEVERS MOUNTED ADJACENT SAID COVER PLATE AND ADJACENT SAID COVER PLATE MEANS ADAPTED FOR URGING SAID PRESSURE PLATE MEANS TOWARDS SAID DRIVEN MEANS, EACH OF SAID LEVERS HAVING ONE END ADAPTED TO RECEIVE AN ENGAGING FORCE SUFFICIENT TO OVERCOME THE EFFECT OF SAID