Patent US3877253A successfully refreshed from Google Patents.
US3877253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip clutch assembly for torque limiting drive for humidifier rotors and the like
Assignee: Skuttle Manufacturing Co
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Filing: 1972-12-01
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Granted: 1975-04-15
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Expires: 1992-12-01
Abstract
Abstract A rotary drum humidifier has the rotor shaft connected to an electric motor by a corrosion resistant slip clutch assembly consisting of a telscoped relatively rotatable plastic clutch members interconnected in torque transmitting relation by ball elements seated in sockets on the inner member and projecting into the outer member where they are retained by a rubber annulus in a groove in the outer member, and when the torque exceeds a predetermined amount the balls are forced out of the sockets to interrupt torque transmission until the excess torque condition no longer prevails.
Inventors
- 👤 Richard J Yeagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:08
CPC Classifications
F; F16; F16D; F16D7/00; F16D7/04; F16D7/06; F16D7/10; Y; Y10; Y10S; Y10S464/00; Y10S464/902; Y10S464/903
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
191 words
A slip clutch assembly comprising inner and outer clutch members adapted to be connected between drive and driven devices, each of said clutch members being an integral synthetic plastics unit, the outer of said clutch members having a cylindrical bore, the inner of said clutch members having an external cylindrical surface smoothly slidably telescoped within said bore for rotatably mounting said inner clutch member directly within said outer clutch member, an external annular groove on said outer clutch member, a plurality of angularly spaced outwardly open sockets on the external surface of said inner clutch member, a motion transmitting connection between said clutch members comprising radially movable balls seated in said sockets and extending within corresponding openings in the bottom of said groove during normal drive conditions, and a resilient annulus consisting of an integral ring of synthetic plastics material in said groove for retaining said balls against displacement from said sockets under normal drive conditions but permitting said balls to be displaced out of said sockets to interrupt the motion transmitting connection between and permit relative rotation of said clutch members under torque conditions in excess of a predetermined amount.
Claim 2
Dependent Claim
191 words
A slip clutch assembly comprising inner and outer clutch members adapted to be connected between drive and driven devices, each of said clutch members being an integral synthetic plastics unit, the outer of said clutch members having a cylindrical bore, the inner of said clutch members having an external cylindrical surface smoothly slidably telescoped within said bore for rotatably mounting said inner clutch member directly within said outer clutch member, an external annular groove on said outer clutch member, a plurality of angularly spaced outwardly open sockets on the external surface of said inner clutch member, a motion transmitting connection between said clutch members comprising radially movable balls seated in said sockets and extending within corresponding openings in the bottom of said groove during normal drive conditions, and a resilient annulus consisting of an integral ring of synthetic plastics material in said groove for retaining said balls against displacement from said sockets under normal drive conditions but permitting said balls to be displaced out of said sockets to interrupt the motion transmitting connection between and permit relative rotation of said clutch members under torque conditions in excess of a predetermined amount.
Claim 3
Dependent Claim
37 words
The slip clutch assembly defined in claim 1, wherein there are two of said balls retained in respective sockets by said resilient annulus, and the said respective openings and sockets are diametrically spaced around said clutch members.
Claim 4
Dependent Claim
26 words
The slip clutch assemblY defined in claim 1, wherein said inner clutch member is formed with an external annular groove in which said sockets are formed.
Claim 5
Dependent Claim
83 words
The slip clutch assembly defined in claim 1, wherein said outer clutch member is cup-shaped with a closed end secured to one of said devices and the internal surface of the closed end of said outer clutch member and the inner end surface of said inner clutch member are slidably rotatably engagable in a plane normal to the clutch axis, and said inner clutch member is formed at its outer end with axially open means for axially slidably non-rotatably receiving the other device.
References Cited (Backward Citations)
US2668426A
Cited
US2860498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |