US3565223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient lining for magnetic clutch
Assignee: Hilite Industries Inc
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Filing: 1969-06-09
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Granted: 1971-02-23
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Expires: 1989-06-09
Abstract
Abstract A magnetic clutch including a driven rotor having a drive pulley therearound and an armature assembly including a spring-mounted armature disc positioned to frictionally engage a face of the rotor. The primary feature of the invention is a resilient lining in and slightly projecting from the face of the armature disc and located around the pole faces. In operation the rotor face and the armature face are in metal-to-metal contact but the resilient lining prevents or reduces noise on impact. In a preferred form of the invention the armature assembly includes a circular resilient cushion on which a spring supporting plate and the armature disc are mounted.
Inventors
- 👤 William C Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:22
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/08; F04B27/0873; F04B27/0895; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D2027/007; F16D2027/008
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
A magnetic clutch for driving a shaft, a driven rotor independent of said shaft and positioned therearound, said rotor having a friction face perpendicular to the axis of the shaft, a stationary electromagnet received in said rotor and directed toward the friction face thereof and thereby providing at least one pole face, an armature assembly comprised of a hub on said shaft, means securing hub and said shaft against relative rotation, an armature disc having a face opposite the face of said rotor, spring means normally spacing the face of said armature disc from the face of said rotor, at least one groove in the face of said armature disc defining pole faces on the sides of the groove and a ring-shaped resilient lining carried by said armature disc and projecting from the face thereof, said resilient lining being around and outwardly of said pole faces, the projecting distance of said lining being such that the faces of the rotor and the armature disc are in contact after the liner initially contacts the rotor face.
Claim 2
Dependent Claim
175 words
A magnetic clutch for driving a shaft, a driven rotor independent of said shaft and positioned therearound, said rotor having a friction face perpendicular to the axis of the shaft, a stationary electromagnet received in said rotor and directed toward the friction face thereof and thereby providing at least one pole face, an armature assembly comprised of a hub on said shaft, means securing hub and said shaft against relative rotation, an armature disc having a face opposite the face of said rotor, spring means normally spacing the face of said armature disc from the face of said rotor, at least one groove in the face of said armature disc defining pole faces on the sides of the groove and a ring-shaped resilient lining carried by said armature disc and projecting from the face thereof, said resilient lining being around and outwardly of said pole faces, the projecting distance of said lining being such that the faces of the rotor and the armature disc are in contact after the liner initially contacts the rotor face.
Claim 3
Dependent Claim
20 words
A magnetic clutch as defined in claim 1 and including a resilient cushion between said hub and said spring means.
Claim 4
Dependent Claim
190 words
A magnetic clutch for driving a shaft, a driven rotor independent of said shaft and positioned therearound, said rotor having a friction face perpendicular to the axis of the shaft, a stationary electromagnet received in said rotor and directed toward the friction face thereof and thereby providing at least one pole face, an armature assembly comprised of a hub on said shaft, means securing hub and said shaft against relative rotation, an armature disc having a face opposite the face of said rotor, spring means normally spacing the face of said armature disc from the face of said rotor, at least one groove in the face of said armature disc defining pole faces on the sides of the groove, a ring-shaped resilient lining carried by said armature disc and projecting from the face thereof, the projecting distance of said lining being such that the faces of the rotor and the armature disc are in contact after the liner initially contacts the rotor face and said clutch including resilient bumpers carried by said hub and positioned to be contacted by said armature disc when the latter is released by said electromagnet.
Claim 5
Dependent Claim
190 words
A magnetic clutch for driving a shaft, a driven rotor independent of said shaft and positioned therearound, said rotor having a friction face perpendicular to the axis of the shaft, a stationary electromagnet received in said rotor and directed toward the friction face thereof and thereby providing at least one pole face, an armature assembly comprised of a hub on said shaft, means securing hub and said shaft against relative rotation, an armature disc having a face opposite the face of said rotor, spring means normally spacing the face of said armature disc from the face of said rotor, at least one groove in the face of said armature disc defining pole faces on the sides of the groove, a ring-shaped resilient lining carried by said armature disc and projecting from the face thereof, the projecting distance of said lining being such that the faces of the rotor and the armature disc are in contact after the liner initially contacts the rotor face and said clutch including resilient bumpers carried by said hub and positioned to be contacted by said armature disc when the latter is released by said electromagnet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |