Patent US3884049A successfully refreshed from Google Patents.
US3884049A
Expired / Lapsed
US
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Drive coupling
Assignee: Hilliard Corp
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Filing: 1972-09-05
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Granted: 1975-05-20
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Expires: 1992-09-05
Abstract
Abstract A flexible drive coupling for power transmission shafts having self tightening features including a tapered bushing element and positioning means engageable with the drive shaft and a power coupling member supported on said bushing adapted during power transmission to be more tightly engaged on said bushing.
Inventors
- 👤 Ernest H Pauli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/64; F16D3/68; F16D1/00; F16D1/06; F16D1/08; F16D1/0847
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A flexible coupling device forming a drive coupling between two shafts in adjacent substantially axially aligned relation comprising a removable bushing member on the adjacent end(s) of each of said shafts, each bushing member having a uniform diameter, inner shaft receiving bore and means fixing its relative axial movement (thereon) on its shaft and an outer cylindrical surface tapered outwardly from the end(s) of said shaft(s), and coupling head members mounted on each of said bushings having longitudinally projecting portions extending toward one another and in overlapping relation to provide a torque transmitting drive connection, said coupling heads having inner tapered cylindrical bores substantially mating with and received respectively on said tapered bushing surfaces.
Claim 2
Dependent Claim
114 words
A flexible coupling device forming a drive coupling between two shafts in adjacent substantially axially aligned relation comprising a removable bushing member on the adjacent end(s) of each of said shafts, each bushing member having a uniform diameter, inner shaft receiving bore and means fixing its relative axial movement (thereon) on its shaft and an outer cylindrical surface tapered outwardly from the end(s) of said shaft(s), and coupling head members mounted on each of said bushings having longitudinally projecting portions extending toward one another and in overlapping relation to provide a torque transmitting drive connection, said coupling heads having inner tapered cylindrical bores substantially mating with and received respectively on said tapered bushing surfaces.
Claim 3
Dependent Claim
28 words
A flexible coupling device according to claim 1 wherein longitudinally extending compressible rib members are formed between the engaging tapered surfaces of said bushing and said coupling head.
Claim 4
Dependent Claim
32 words
A flexible coupling device according to claim 1 wherein said shaft receiving bore of said bushing terminates at a preselected depth thereby fixing the longitudinal displacement of said bushing on said shaft.
Claim 5
Dependent Claim
33 words
A flexible coupling device according to claim one wherein resilient space means is interposed between the confronting end faces of said coupling head means and between said longitudinally projecting drive transmitting portions thereof.
Claim 6
Dependent Claim
20 words
A coupling device according to claim one in which said bushings and coupling head members are molded of plastic material.
Claim 7
Dependent Claim
43 words
A flexible coupling device according to claim 2 made of molded plastic material wherein said rib members are serrations extending axially within the tapered bores of said bushing members and comprise inwardly extending radial projections in the order of 0.001 to 0.005 inches.
Claim 8
Dependent Claim
36 words
A coupling device according to claim 5 wherein said bushing member contains a metal element mounted therein and a radially adjustable screw member is threadedly received by said metal element for locking engagement with said shaft.
References Cited (Backward Citations)
US2973633A
Cited
US3396556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |