Torque limiter clutch
First Claim
Patent Images
1. A torque limiting clutch and output shaft assembly, comprising:
- first and second end plates maintained in fixed spaced apart relationship to each other;
friction discs interleaved with separator discs between said first and second end plates;
a pressure plate interposed between said first end plate and said interleaved friction discs and separator discs;
spring means interposed between said first end plate and said pressure plate for urging said pressure plate toward said second end plate and urging said friction discs and separator discs into frictional contacting engagement with each other;
an output shaft;
an output hub received upon said output shaft, said friction discs being splined to said output hub, said output hub and output shaft being interengaged by an interference fit and being separable from said friction discs as a unit, and a fixed friction disc interposed between said second end plate and said interleaved friction discs and separator discs, said fixed friction disc being bolted to said output hub said output hub having splines for engaging said friction discs, and a plurality of threaded bores for receiving bolts from said fixed friction disc, said splines and threaded bores being in registration with each other.
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Abstract
A multiple disc torque limiting clutch has an output hub in interference fit upon an output shaft. After being so assembled, as by a heat shrink fit, the output hub and shaft can be received by the remainder of the torque limiting clutch, consisting of interleaved friction discs and separator discs maintained between end plates. A pressure plate urges the friction discs and separator discs toward a fixed friction disc which is secured to the output hub. The force upon the pressure plate is attained by a Belleville spring and circumferentially spaced spring cup assemblies.
22 Citations
14 Claims
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1. A torque limiting clutch and output shaft assembly, comprising:
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first and second end plates maintained in fixed spaced apart relationship to each other;
friction discs interleaved with separator discs between said first and second end plates;
a pressure plate interposed between said first end plate and said interleaved friction discs and separator discs;
spring means interposed between said first end plate and said pressure plate for urging said pressure plate toward said second end plate and urging said friction discs and separator discs into frictional contacting engagement with each other;
an output shaft;
an output hub received upon said output shaft, said friction discs being splined to said output hub, said output hub and output shaft being interengaged by an interference fit and being separable from said friction discs as a unit, and a fixed friction disc interposed between said second end plate and said interleaved friction discs and separator discs, said fixed friction disc being bolted to said output hub said output hub having splines for engaging said friction discs, and a plurality of threaded bores for receiving bolts from said fixed friction disc, said splines and threaded bores being in registration with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A torque limiting clutch and ouput shaft assembly, comprising:
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first and second fixedly interconnected end plates;
interleaved friction discs and separator discs maintained in a space between said end plates;
spring means engaging said pressure plate and urging said friction discs and separator discs into frictional engagement;
said first and second end plates, friction discs, separator discs, pressure plate and spring means comprising a first unit;
an output hub received upon an output shaft and comprising a second unit; and
wherein said second unit is selectively engageable and disengageable from said first unit, said first unit being splined and bolted to said second unit, said second unit having splines and bolt holes, said splines and bolt holes being in registration with each other. - View Dependent Claims (11, 12, 13)
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14. A torque limiting clutch and output shaft assembly, comprising:
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an output shaft;
an output hub received upon said output shaft by an interference fit, said output hub having splines about an outer circumference thereof;
at least one friction disc received upon said splines;
a fixed friction disc secured to an end of said output hub, said output hub having threaded bores in said end, said threaded bores receiving bolts securing said fixed friction disc to said output hub; and
wherein one of said threaded bores and a valley of one of said splines are collinear on a line that intersects with a center point of said output hub.
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Specification