US3782841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for securing an annular member to a shaft for torque transmission therebetween
Assignee: SCHAFER TECHNIK fur ANTRIEB und STEUERUNG OSTERFELDSTR 75 D-5802 WETTER 4 WEST GERMANY A JOINT STOCK Co Ltd LIABILITY GmbH
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Filing: 1972-02-18
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Granted: 1974-01-01
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Expires: 1992-02-18
Abstract
Abstract An annular member, such as a flywheel, pulley, sprocket wheel or disk, is secured to a shaft for torque transmission therebetween by a hub sleeve having an internally smooth, circumferentially continuous nonsplit configuration adapted to smoothly fit over the shaft. A doubly-conical compression ring is seated on the sleeve which is composed of steel and is elastically compressible. The compression ring is clamped between a pair of annular thrust rings having similar conicities and provided with equispaced bores through which bolts are threaded to draw the thrust rings together and urge the sleeve under radial compression against the shaft. When the torque capacity of the system is M, the axial compression force S is established such that the relationships S 2.3 M/(d-20) or S 3 M/(d-20) result, where d is the diameter of the shaft. Under these conditions, the sleeve is elastically deformed in a circumferentially undulating pattern and elastically deforms the shaft in a corresponding manner to bring about a mating noncircular fit between the sleeve and shaft to prevent slippage.
Inventors
- 👤 W Winckelhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:34
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/093; F16D1/095; B; B60; B60B; B60B27/00; B60B27/0015; B60B27/0021; B60B27/0026; B60B27/06; B60B27/065; B60B37/00; B60B37/04; B60B2310/00; B60B2310/30; B60B2310/305; B60B2310/306; B60B2360/00; B60B2360/10; B60B2360/102; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T403/7062
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
190 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular cylindrical metal sleeve of uniform cross-section and smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on sleeve of a compressive strength sufficient to transmit a sleeve-deforming force thereto, said ring having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein (2.3 M)/d - 20) < OR = S < OR = 3 M/(d - 20) and Alpha about 10* while 10* < OR = Alpha '' < OR = 20*.
Claim 2
Dependent Claim
190 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular cylindrical metal sleeve of uniform cross-section and smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on sleeve of a compressive strength sufficient to transmit a sleeve-deforming force thereto, said ring having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein (2.3 M)/d - 20) < OR = S < OR = 3 M/(d - 20) and Alpha about 10* while 10* < OR = Alpha '' < OR = 20*.
Claim 3
Dependent Claim
19 words
The torque-transmitting assembly defined in claim 1 wherein S 2.3 m/(d - 20), Alpha 10* and Alpha '' 10*.
Claim 4
Dependent Claim
51 words
The torque-transmitting assembly defined in claim 1 wherein said bolts are arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring.
Claim 5
Dependent Claim
21 words
The torque-transmitting assembly defined in claim 3 wherein said shaft is composed of steel and said sleeve iS composed of metal.
Claim 6
Dependent Claim
245 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* < or = Alpha '' < or = 20*, said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and a multiplicity of angularly equispaced bolts bridging said thrust rings and located along a circle of centers having a diameter different from that of the first-mentioned circle of centers.
Claim 7
Dependent Claim
245 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* < or = Alpha '' < or = 20*, said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and a multiplicity of angularly equispaced bolts bridging said thrust rings and located along a circle of centers having a diameter different from that of the first-mentioned circle of centers.
Claim 8
Dependent Claim
245 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* < or = < or = 20* said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and wherein said openings in at least one of said thrust rings are U-shaped recesses opened toward said shaft.
Claim 9
Dependent Claim
245 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a diameter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* < or = < or = 20* said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and wherein said openings in at least one of said thrust rings are U-shaped recesses opened toward said shaft.
Claim 10
Dependent Claim
241 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a dimeter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer Conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* about Alpha '' about 20*, said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and a lubricating film between said surfaces of said thrust rings and said surfaces of said compression ring.
Claim 11
Dependent Claim
241 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a dimeter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer Conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while 10* about Alpha '' about 20*, said bolts being arrayed along a circle of centers having a diameter slightly greater than the maximum outer diameter of said compression ring plus the diameter of one of said bolts in the region of the maximum outer diameter of said compression ring, said shaft being composed of steel and said sleeve being composed of metal, and a lubricating film between said surfaces of said thrust rings and said surfaces of said compression ring.
Claim 12
Dependent Claim
166 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a dimeter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while Alpha '' about 20*.
Claim 13
Dependent Claim
166 words
A torque-transmitting assembly comprising: a shaft adapted to withstand a torque M and having a dimeter d; a rotatable annular member mounted on said shaft and having a circumferentially continuous circular-cross-section sleeve smoothly fitting on said shaft and axially removable therefrom in an unstressed state of said sleeve; a compression ring on said sleeve having a pair of oppositely converging outer conical surfaces including an axially inwardly located conical surface with a half angle Alpha '' and an axially outwardly located surface having a half angle Alpha ; a pair of thrust rings axially spaced on opposite sides of said compression ring and having respective inner conical surfaces engaging at outer conical surfaces of said compression ring, said thrust rings being provided with angularly equispaced registering openings; and respective bolts threadedly interconnecting said thrust rings together with a bolt-produced force S wherein 2.3 M/(d - 20) < or = S < or = 3 M/(d - 20) and Alpha about 10* while Alpha '' about 20*.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |