Patent US4093052A successfully refreshed from Google Patents.
US4093052A
Expired / Lapsed
US
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Fluid actuated coupling assembly
Assignee: Foerenade Fabriksverken AB
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Filing: 1976-02-23
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Granted: 1978-06-06
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Expires: 1996-02-23
Abstract
Abstract A fluid actuated coupling assembly for releasably coupling together of at least two elements and preferably transmitting torque between them. An inner metal sleeve and an outer metal sleeve are secured together to define a very thin gap between them. Means are provided to pressurize that gap to cause radial expansion of the gap and the sleeves.
Inventors
- 👤 Curt Gunnar Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:21
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0805; F16D25/00; F16D25/04; F16D25/042; F16D25/046; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/1029; Y10T279/12; Y10T279/1216; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7061
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
A fluid actuated coupling assembly for releasably coupling at least two elements together preferably for transmitting torque therebetween comprising an outer metal sleeve, an inner metal sleeve concentrically mounted within the outer sleeve and secured thereto at least at one end and defining a recess or gap between the two sleeves which is closed at said one end of the sleeves, means for introducing a pressure fluid in said recess and means for preventing exhaust of said pressure fluid, said secured sleeves and said means for preventing exhaust of said pressure fluid defining a volume which includes said recess volume and which is slightly larger than said recess volume, the radial dimension of the sleeve walls of both sleeves being variable by changing the pressure on the pressure fluid on the said recess, the thickness of the recess in the non-pressurized state being determined by the following formula: t/d = 2 × 10.sup.-2 where t equals the width of the recess and d equals the average diameter of the recess.
Claim 2
Dependent Claim
170 words
A fluid actuated coupling assembly for releasably coupling at least two elements together preferably for transmitting torque therebetween comprising an outer metal sleeve, an inner metal sleeve concentrically mounted within the outer sleeve and secured thereto at least at one end and defining a recess or gap between the two sleeves which is closed at said one end of the sleeves, means for introducing a pressure fluid in said recess and means for preventing exhaust of said pressure fluid, said secured sleeves and said means for preventing exhaust of said pressure fluid defining a volume which includes said recess volume and which is slightly larger than said recess volume, the radial dimension of the sleeve walls of both sleeves being variable by changing the pressure on the pressure fluid on the said recess, the thickness of the recess in the non-pressurized state being determined by the following formula: t/d = 2 × 10.sup.-2 where t equals the width of the recess and d equals the average diameter of the recess.
Claim 3
Dependent Claim
38 words
A fluid actuated coupling assembly as defined in claim 1 in which the end or the ends of the recess is flute-formed so as to eliminate the risk of splitting the outer sleeve and the inner sleeve apart.
Claim 4
Dependent Claim
34 words
Fluid actuated coupling assemblies according to claim 2, in which the recess flutes are partly filled with an element of substantially the same coefficient of expansion as the inner sleeve and the outer sleeve.
Claim 5
Dependent Claim
38 words
Fluid actuated coupling assembly according to claim 2, in which the recess flutes are partly filled up with a separate element reducing the size thereof to a size corresponding to the width of the recess at the maximum.
Claim 6
Dependent Claim
48 words
A fluid actuated coupling assembly according to claim 1 in which the means for introducing pressure fluid into the recess comprises a bore communicating the recess with the exterior, a sealing piston provided in said bore and a screw means for forcing the sealing piston into the bore.
Claim 7
Dependent Claim
61 words
Fluid actuated coupling assembly according to claim 1, in which the means for introducing pressure fluid into the recess comprises an axial groove, a sealing ring piston provided in said groove and a collar pressure ring engaging the ring piston and forces same into the groove by means of several screw means engaging the collar pressure ring with the outer sleeve.
Claim 8
Dependent Claim
54 words
A fluid actuated coupling assembly according to claim 1 in which the means for introducing pressurized fluid into the recess comprises an external pressure supply, a one way valve communicating the recess with the pressure fluid supply thereby permitting the introduction of pressure fluid in the recess and preventing exhaust of pressure fluid therefrom.
Claim 9
Dependent Claim
47 words
A fluid actuated coupling assembly according to claim 1 in which the pressure fluid is mixed up with particals having a coefficient of expansion which is less than that of the pressure fluid or preferably the same as that of the outer sleeve and the inner sleeve.
Claim 10
Dependent Claim
33 words
A fluid actuated coupling assembly according to claim 1, in which the outer sleeve and/or the inner sleeve are formed with radial extensions reducing the necessary amount of pressure fluid in the recess.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |