Electromagnetic clutch

Claim 2

An electromagnetic clutch comprising a rotatable driving element, a rotatable driven element, a pole member secured to said rotatable driving element for rotation therewith, electromagnetic means associated with said driving element, an armature plate mounted a predetermined air space apart from said pole member and movable into contact with said pole member by said electromagnetic means, a support member rotatably mounted on said rotatable driven element, spring means secured at one end thereof to said support member and at the other end thereof to said armature plate, a first plurality of equally spaced radially extending tabs formed on said support member, a torque dampener having a plurality of equally spaced radial slots formed therein for mounting on said first plurality of tabs, and a cover member having a second plurality of equally spaced radially extending tabs formed thereon for extension into the remaining alternate radial slots so as to compress alternate portions of said torque dampener between respective adjacent first and second tabs, said cover member being operatively connected to said driven element for rotating said driven element.

Claim 3

An electromagnetic clutch comprising an inpuT pulley, an output shaft, a rotor secured to said input pulley for rotation therewith, an armature plate mounted a predetermined air space apart from said rotor, a fixed coil mounted adjacent said rotor for attracting said armature plate to said rotor upon energization of said coil, a drive cup rotatably mounted on said output shaft, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate, a first plurality of equally spaced radially extending tabs formed on said drive cup, a torque dampener having a plurality of equally spaced radial slots formed therein for mounting on said first plurality of tabs, and a cover member having a second plurality of equally spaced radially extending tabs formed thereon for extension into the remaining alternate radial slots so as to compress alternate portions of said torque dampener between respective adjacent first and second tabs, said cover member being operatively connected to said output shaft for rotating said output shaft.

Claim 4

An electromagnetic clutch comprising an inpuT pulley, an output shaft, a rotor secured to said input pulley for rotation therewith, an armature plate mounted a predetermined air space apart from said rotor, a fixed coil mounted adjacent said rotor for attracting said armature plate to said rotor upon energization of said coil, a drive cup rotatably mounted on said output shaft, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate, a first plurality of equally spaced radially extending tabs formed on said drive cup, a torque dampener having a plurality of equally spaced radial slots formed therein for mounting on said first plurality of tabs, and a cover member having a second plurality of equally spaced radially extending tabs formed thereon for extension into the remaining alternate radial slots so as to compress alternate portions of said torque dampener between respective adjacent first and second tabs, said cover member being operatively connected to said output shaft for rotating said output shaft.

Claim 5

An electromagnetic clutch comprising input means, rotatable output means, a rotor secured to said input means for rotation therewith, an armature plate mounted a predetermined air space apart from said rotor, a coil mounted adjacent said input means for attracting said armature plate into engagement with said rotor upon energization of said coil, a drive cup rotatably mounted and axially fixed on said rotatable output means, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate, a cover member secured to said output means, a torque dampener mounted without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener, a first plurality of equally spaced radially extending tabs formed on said drive cup and extending into every other one of said slots, and a second plurality of equally spaced radially extending tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener between adjacent first and second tabs.

Claim 6

An electromagnetic clutch comprising input means, rotatable output means, a rotor secured to said input means for rotation therewith, an armature plate mounted a predetermined air space apart from said rotor, a coil mounted adjacent said input means for attracting said armature plate into engagement with said rotor upon energization of said coil, a drive cup rotatably mounted and axially fixed on said rotatable output means, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate, a cover member secured to said output means, a torque dampener mounted without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener, a first plurality of equally spaced radially extending tabs formed on said drive cup and extending into every other one of said slots, and a second plurality of equally spaced radially extending tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener between adjacent first and second tabs.

Claim 7

An electromagnetic clutch comprising an input pulley having a pulley groove, a radial wall extending outwardly from said pulley groove, and a cylindrical extension formed on the outer portion of said radial wall, an output shaft, a rotor secured to said cylindrical extension of said input pulley, a fixed coil housing, an annular coil mounted in said coil housing, a first predetermined air space intermediate said coil housing and an outer portion of said rotor, a second predetermined air space intermediate said coil housing and an inner portion of said rotor, an armature plate mounted a third predetermined air space apart from said rotor, a plurality of radial spaced arcuate slots formed on said armature plate and on said rotor providing a multipole clutch field therebetween upon energization of said coil, a drive cup rotatably mounted on said output shaft and retained axially thereon, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate for permitting said armature plate to move generally axially into frictional engagement with said rotor upon energization of said coil, a hub mounted on said output shaft, a cover member secured to said hub, a torque dampener ring retained axially without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener ring, a first plurality of equally spaced tabs formed on said drive cup and extending into every other one of said radial slots, and a second plurality of tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener ring between adjacent first and second tabs.

Claim 8

An electromagnetic clutch comprising an input pulley having a pulley groove, a radial wall extending outwardly from said pulley groove, and a cylindrical extension formed on the outer portion of said radial wall, an output shaft, a rotor secured to said cylindrical extension of said input pulley, a fixed coil housing, an annular coil mounted in said coil housing, a first predetermined air space intermediate said coil housing and an outer portion of said rotor, a second predetermined air space intermediate said coil housing and an inner portion of said rotor, an armature plate mounted a third predetermined air space apart from said rotor, a plurality of radial spaced arcuate slots formed on said armature plate and on said rotor providing a multipole clutch field therebetween upon energization of said coil, a drive cup rotatably mounted on said output shaft and retained axially thereon, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate for permitting said armature plate to move generally axially into frictional engagement with said rotor upon energization of said coil, a hub mounted on said output shaft, a cover member secured to said hub, a torque dampener ring retained axially without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener ring, a first plurality of equally spaced tabs formed on said drive cup and extending into every other one of said radial slots, and a second plurality of tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener ring between adjacent first and second tabs.

Claim 9

An electromagneTic clutch comprising an input pulley having a pulley groove, a radial wall extending outwardly from said pulley groove, and a cylindrical extension formed on the outer portion of said radial wall, an output shaft, a radially extending rotor having a first cylindrically extending flange formed thereon and secured to said cylindrical extension of said input pulley, a ring member mounted within said first cylindrically extending flange, a conical-head bolt threadedly mounted in aligned threaded openings formed in said ring member and said first cylindrically extending flange, said conical head serving to lock into an opening formed in said cylindrical pulley extension upon threadedly withdrawing said bolt from said aligned threaded openings, a second cylindrically extending flange formed on said rotor radially inward of said first cylindrically extending flange, a fixed coil housing mounted intermediate said first and second cylindrically extending flanges, an annular coil mounted in said coil housing, a first predetermined air space intermediate said coil housing and said first cylindrically extending flange, a second predetermined air space intermediate said coil housing and said second cylindrically extending flange, an armature plate mounted a third predetermined air space apart from the radially extending portion of said rotor, first and second sets of radially spaced arcuate slots formed on said rotor, a third set of arcuate slots formed on said armature plate intermediate said first and second sets of arcuate slots and providing a multipole clutch field therewith upon energization of said coil, a drive cup rotatably mounted on said output shaft and retained axially thereon, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate for permitting said armature plate to move generally axially into frictional engagement with said rotor upon energization of said coil, a hub mounted on said output shaft, a cover member secured to said hub, a torque dampener ring retained axially without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener ring, a first plurality of equally spaced tabs formed on said drive cup and extending into every other one of said radial slots, and a second plurality of tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener ring between adjacent first and second tabs.

Claim 10

An electromagneTic clutch comprising an input pulley having a pulley groove, a radial wall extending outwardly from said pulley groove, and a cylindrical extension formed on the outer portion of said radial wall, an output shaft, a radially extending rotor having a first cylindrically extending flange formed thereon and secured to said cylindrical extension of said input pulley, a ring member mounted within said first cylindrically extending flange, a conical-head bolt threadedly mounted in aligned threaded openings formed in said ring member and said first cylindrically extending flange, said conical head serving to lock into an opening formed in said cylindrical pulley extension upon threadedly withdrawing said bolt from said aligned threaded openings, a second cylindrically extending flange formed on said rotor radially inward of said first cylindrically extending flange, a fixed coil housing mounted intermediate said first and second cylindrically extending flanges, an annular coil mounted in said coil housing, a first predetermined air space intermediate said coil housing and said first cylindrically extending flange, a second predetermined air space intermediate said coil housing and said second cylindrically extending flange, an armature plate mounted a third predetermined air space apart from the radially extending portion of said rotor, first and second sets of radially spaced arcuate slots formed on said rotor, a third set of arcuate slots formed on said armature plate intermediate said first and second sets of arcuate slots and providing a multipole clutch field therewith upon energization of said coil, a drive cup rotatably mounted on said output shaft and retained axially thereon, a plurality of leaf springs each secured at one end thereof to said drive cup and at the other end thereof to said armature plate for permitting said armature plate to move generally axially into frictional engagement with said rotor upon energization of said coil, a hub mounted on said output shaft, a cover member secured to said hub, a torque dampener ring retained axially without bonding between said drive cup and said cover member, a plurality of equally spaced radial slots formed in said torque dampener ring, a first plurality of equally spaced tabs formed on said drive cup and extending into every other one of said radial slots, and a second plurality of tabs formed on said cover member and extending into the remaining alternate radial slots, thereby compressing the respective intermediate portions of said torque dampener ring between adjacent first and second tabs.