Patent US2654961A successfully refreshed from Google Patents.
US3603173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center core for a laminated coupling
Assignee: Bendix Corp
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Filing: 1969-11-25
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Granted: 1971-09-07
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Expires: 1989-11-25
Abstract
Abstract A laminated coupling used to connect a helicopter rotor arm to a rotor blade includes a pair of spaced end bushings interconnected by an endless belt. A pair of annular clips encircle the belt adjacent the bushings to define a center section of the coupling having generally parallel sides defining an opening between them. A core piece composed of a plurality of relatively rotatable laminations is disposed in the opening between the clips to maintain separation of the clips and to permit twisting of the coupling about an axis extending through the bushings.
Inventors
- 👤 Peter Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:30
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/02; F16C7/026; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2144
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A coupling comprising: a pair of spaced-apart bushings adapted to be connected to surrounding structure; an endless belt interconnecting said bushings; said belt having a pair of opposed end portions extending around said bushings and a pair of spaced side portions defining the sides of an opening in said coupling; an elongated core piece disposed in said opening extending between said side portions; said core piece including a plurality of interconnected members rotatable relative to one another about an axis extending through said bushings to permit twisting of the coupling about said axis.
Claim 2
Dependent Claim
93 words
A coupling comprising: a pair of spaced-apart bushings adapted to be connected to surrounding structure; an endless belt interconnecting said bushings; said belt having a pair of opposed end portions extending around said bushings and a pair of spaced side portions defining the sides of an opening in said coupling; an elongated core piece disposed in said opening extending between said side portions; said core piece including a plurality of interconnected members rotatable relative to one another about an axis extending through said bushings to permit twisting of the coupling about said axis.
Claim 3
Dependent Claim
43 words
The invention of claim 1; and means carried by said belt adjacent each of said bushings for drawing said side portions together to present a section of said coupling between said means having generally parallel sides; said core piece extending between said means.
Claim 4
Dependent Claim
50 words
The invention of claim 2; said means being a pair of clips encircliNg said belt; and a pair of cross pins extending through said opening and engaging said clips; said core piece being disposed between said cross pins to thereby prevent movement of the cross pins relative to the belt.
Claim 5
Dependent Claim
46 words
The invention of claim 3: said members being a plurality of laminations disposed between said pins; each of said pins and each of said laminations having a central opening extending therethrough; and an assembly rod extending through each of said pins and each of said laminations.
Claim 6
Dependent Claim
113 words
A laminated coupling comprising: a pair of spaced-apart bushings adapted to be connected to surrounding structure; an endless belt encircling said end bushings; said belt consisting of a series of layers of a filament material integrated by an adhesive material; means carried by said belt adjacent each of said bushings defining a section of said belt between said means having spaced, generally parallel sides defining the sides of an opening through the belt; and members disposed in said opening between said means for locating the latter on said belt; said members being rotatable relative to one another about an axis extending through said bushings to permit twisting of the coupling about said axis.
Claim 7
Dependent Claim
113 words
A laminated coupling comprising: a pair of spaced-apart bushings adapted to be connected to surrounding structure; an endless belt encircling said end bushings; said belt consisting of a series of layers of a filament material integrated by an adhesive material; means carried by said belt adjacent each of said bushings defining a section of said belt between said means having spaced, generally parallel sides defining the sides of an opening through the belt; and members disposed in said opening between said means for locating the latter on said belt; said members being rotatable relative to one another about an axis extending through said bushings to permit twisting of the coupling about said axis.
Claim 8
Dependent Claim
44 words
The invention of claim 5: said means being a pair of clips encircling said belt; a pair of cross pins extending through said opening; each of said cross pins engaging one of said clips to prevent the latter from sliding toward the other clip.
Claim 9
Dependent Claim
25 words
The invention of claim 6: said members being a plurality of laminations disposed between said pins; and means for interconnecting the laminations and the pins.
Claim 10
Dependent Claim
36 words
The invention of claim 7: each of said pins and each of said laminations having a central opening therethrough; said last-mentioned means being an elongated assembly rod; said rod extending through each of said central openings.
References Cited (Backward Citations)
US3370483A
Cited
US3475988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |