Patent US3880267A successfully refreshed from Google Patents.
US3880267A
Expired / Lapsed
US
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Coupling device having means for relieving circumferential stresses
Assignee: Gleason Works
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Filing: 1973-02-12
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Granted: 1975-04-29
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Expires: 1993-02-12
Abstract
Abstract A coupling device assembled from first and second clutch members which each have lug elements formed on a face thereof so that lug elements of one clutch member can be brought into coupling contact with lug elements of the other clutch member to form a driving connection therebetween is provided with means for relieving circumferential stresses which develop between contacting lug elements of the two clutch members when the clutch members are coupled together in a driving relationship and when one of the clutch members is expanding at a greater rate than the other clutch member.
Inventors
- 👤 Ronald E Auble
- 👤 Wells Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:05
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/17; F16H55/18; B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/08; F16D; F16D1/00; F16D1/02; F16D1/033; F16D11/00; F16D11/14; F16D2011/008
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
In a coupling device assembled from first and second clutch members which each have lug elements formed on a face thereof so that the lug elements of one clutch member can be brought into coupling contact with lug elements of the other clutch member to form a driving connection thereof, said lug elements of one clutch member being of a type in which individual lug elements are convexly curved lengthwise, with the lug elements of the other clutch member being of the type in which individual lug elements are concavely curved lengthwise, there further being a lengthwise mismatch between said convex and concave cuRvatures of the lug elements of said clutch members, and wherein said first clutch member has a characteristic of greater elasticity than said second clutch member, the improvement comprising means for relieving circumferential stresses which develop between contacting lug elements of the two clutch members when one clutch members are coupled together in a driving relationship and when the clutch member is expanding at a greater rate than the other clutch member.
Claim 2
Dependent Claim
175 words
In a coupling device assembled from first and second clutch members which each have lug elements formed on a face thereof so that the lug elements of one clutch member can be brought into coupling contact with lug elements of the other clutch member to form a driving connection thereof, said lug elements of one clutch member being of a type in which individual lug elements are convexly curved lengthwise, with the lug elements of the other clutch member being of the type in which individual lug elements are concavely curved lengthwise, there further being a lengthwise mismatch between said convex and concave cuRvatures of the lug elements of said clutch members, and wherein said first clutch member has a characteristic of greater elasticity than said second clutch member, the improvement comprising means for relieving circumferential stresses which develop between contacting lug elements of the two clutch members when one clutch members are coupled together in a driving relationship and when the clutch member is expanding at a greater rate than the other clutch member.
Claim 3
Dependent Claim
57 words
The improvement of claim 1 wherein said means for relieving circumferential stresses comprises one or more gaps provided in the face of said first clutch member for receiving thermal growth of lug elements carried adjacent to said gaps when side walls of said same lug elements are loaded against lug elements carried by said second clutch members.
Claim 4
Dependent Claim
30 words
The improvement of claim 2 wherein said first clutch member is formed with more than one additional lug element and more than one additional gap than said second clutch member.
Claim 5
Dependent Claim
19 words
The improvement of claim 2 wherein said gaps comprise slots formed in lug elements of said first clutch member.
Claim 6
Dependent Claim
54 words
The improvement of claim 3 wherein said second clutch member is formed with a series of equally spaced positions for lug elements about a face thereof and wherein said spaces are of sufficient size to receive lug elements and associated gaps of said first clutch member when the two clutch members are coupled together.
Claim 7
Dependent Claim
15 words
The improvement of claim 1 wherein said two clutch members are formed from dissimilar materials.
Claim 8
Dependent Claim
27 words
The improvement of claim 6 wherein said first clutch member is formed from a steel material and said second clutch member is formed from a ceramic material.
Claim 9
Dependent Claim
21 words
The improvement of claim 1 wherein said lugs of the two clutch members have positive slope angles in the axial direction.
Claim 10
Dependent Claim
21 words
The improvement of claim 1 wherein there is profile mismatch between the profiles of contacting side walls of said clutch members.
Claim 11
Dependent Claim
74 words
The improvement of claim 2 wherein said means for relieving circumferential stresses includes a structural relationship in which said lug elements of said second clutch member are dimensioned so that their toplands engage the bottomlands of said first clutch member, when the two clutch members are axially clamped to form an assembled coupling device, to thereby increase the ease with which said first clutch member can radially expand relative to said second clutch member.
Claim 12
Dependent Claim
56 words
The improvement of claim 1 wherein said last-named means includes a structural relationship between the contacting lugs of said two clutch members, said structural relationship providing for a transfer of loading from contacting side walls of opposing lugs to (a) the toplands of said second clutch member and (b) the bottomlands of said first clutch member.
Claim 13
Dependent Claim
58 words
The improvement of claim 11 wherein lugs of said second clutch member are formed to initially contact (a) the side walls and then (b) the bottomlands of lugs formed in said first clutch member, during assembly and axial clamping of the two clutch members so as to maintain rigid axial alignment of the two clutch members after clamping.
References Cited (Backward Citations)
US1532564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |