US3762516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clutch
Assignee: Individual
•
Filing: 1972-04-27
•
Granted: 1973-10-02
•
Expires: 1992-04-27
Abstract
Abstract A magnetic clutch comprising a V-pulley revolvably mounted with a ball bearing on a boss which axially protrudes from a front panel, a magnet assembly connected to the front panel with a very small gap provided between itself and the V-pulley, and a clutch wheel disposed on the side of the pulley opposite to the side where the magnet assembly is located, face-to-face with the frictionally engaging surface of the pulley on that side and fixedly secured to a driven shaft, the clutch wheel and the driven shaft being connected together through a damper formed of an elastic metal plate by pressing.
Inventors
- 👤 T Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D2027/007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
218 words
In a magnetic clutch including a V-pulley rotatably supported by an anti-friction bearing on a tubular boss extending from a front panel, a magnetic assembly secured to the front panel axially inwardly of the V-pulley and coaxially with the tubular boss and defining, with the V-pulley, a very small air gap, a clutch member adjacent the axially outer surface of the V-pulley and frictionally engageable therewith, and means securing the clutch member to a driven shaft coaxiallly within the tubular boss, the improvement comprising, in combination, a hub secured to said driven shaft; said clutch member being an annular member whose inner periphery is spaced radially from said hub; and a resilient metal stamping forming a plate sprIng damper, included in said securing means; said plate spring damper having an outer portion with an axially inwardly extending peripheral flange surrounding the periphery of said clutch member, a central portion secured to said hub, and an intermediate portion formed with cut-outs therein and interconnecting said outer and central portions; and cantilever fingers extending integrally from said intermediate portion and having free ends secured to said clutch member; whereby said damper has a spring action in the axial direction and flexibility in the diametric direction so that said damper absorbs shocks and vibrations during power transmission through said magnetic clutch.
Claim 2
Dependent Claim
218 words
In a magnetic clutch including a V-pulley rotatably supported by an anti-friction bearing on a tubular boss extending from a front panel, a magnetic assembly secured to the front panel axially inwardly of the V-pulley and coaxially with the tubular boss and defining, with the V-pulley, a very small air gap, a clutch member adjacent the axially outer surface of the V-pulley and frictionally engageable therewith, and means securing the clutch member to a driven shaft coaxiallly within the tubular boss, the improvement comprising, in combination, a hub secured to said driven shaft; said clutch member being an annular member whose inner periphery is spaced radially from said hub; and a resilient metal stamping forming a plate sprIng damper, included in said securing means; said plate spring damper having an outer portion with an axially inwardly extending peripheral flange surrounding the periphery of said clutch member, a central portion secured to said hub, and an intermediate portion formed with cut-outs therein and interconnecting said outer and central portions; and cantilever fingers extending integrally from said intermediate portion and having free ends secured to said clutch member; whereby said damper has a spring action in the axial direction and flexibility in the diametric direction so that said damper absorbs shocks and vibrations during power transmission through said magnetic clutch.
Claim 3
Dependent Claim
28 words
In a magnetic clutch, the improvement claimed in claim 1, in which said cantilever fingers extend chordally from said intermediate portion and are located in respective cutouts thereof.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |