Patent US3842637A successfully refreshed from Google Patents.
US3842637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combine drive torque sensing
Assignee: Deutz Allis Corp
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Filing: 1973-01-22
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Granted: 1974-10-22
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Expires: 1993-01-22
Abstract
Abstract This disclosure relates to a torque sensing sheave wherein one of the sheave sections is attached to a central shaft and the other sheave section is provided with a cam operatively connected to a matching cam carried by such shaft and including a spring biasing the cams apart and biasing such sheave sections together.
Inventors
- 👤 R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:08
CPC Classifications
A; A01; A01D; A01D69/00; A01D69/06; F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/56; F16H61/00; F16H61/66; F16H61/662; F16H61/6625
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
222 words
A torque sensing variable diameter V-belt transmission assembly comprising: a first sheave structure having a central sleeve adapted at its inner diameter to slide onto one end of a power transmitting shaft and adapted to connect to said shaft so as to rotate therewith and a first V-belt sheave section rigidly secured to and extending radially outward from one end of said central sleeve, a second sheave structure having a sleeve part rotatably and axially slidably mounted on the radially outer diameter of said central sleeve and a second V-belt sheave section rigidly secured to and extending radially from said sleeve part, a first cam member connected in axially separable torque transmitting relation to said central sleeve and presenting a first axially extending cam part, a second cam member connected in axially separable torque transmitting relation to said second sheave structure and presenting a second axially extending cam part in axially shiftable torque transmitting engagement with said first cam part, compression spring means between said cam members urging the latter axially away from one another, and a retainer having portions in axial thrust transmitting relation to said cam members operable to limit relative axial movement of said cam members away from one another whereby said cam members and spring means are maintained together as a unitary package separable from said sheave structures.
Claim 2
Dependent Claim
222 words
A torque sensing variable diameter V-belt transmission assembly comprising: a first sheave structure having a central sleeve adapted at its inner diameter to slide onto one end of a power transmitting shaft and adapted to connect to said shaft so as to rotate therewith and a first V-belt sheave section rigidly secured to and extending radially outward from one end of said central sleeve, a second sheave structure having a sleeve part rotatably and axially slidably mounted on the radially outer diameter of said central sleeve and a second V-belt sheave section rigidly secured to and extending radially from said sleeve part, a first cam member connected in axially separable torque transmitting relation to said central sleeve and presenting a first axially extending cam part, a second cam member connected in axially separable torque transmitting relation to said second sheave structure and presenting a second axially extending cam part in axially shiftable torque transmitting engagement with said first cam part, compression spring means between said cam members urging the latter axially away from one another, and a retainer having portions in axial thrust transmitting relation to said cam members operable to limit relative axial movement of said cam members away from one another whereby said cam members and spring means are maintained together as a unitary package separable from said sheave structures.
Claim 3
Dependent Claim
50 words
The assembly of claim 1 wherein said retainer is cylindrical in shape, surrounds said cam members and spring means and shields said cam members and spring means from dirt when said assembly is installed on said shaft and wherein said portions extend radially inward at opposite ends of said retainer.
Claim 4
Dependent Claim
85 words
In a torque sensing transmission as recited in claim 2 and wherein said shaft is provided with a longitudinally extending grease passage extending from one end of said shaft and communicating with a radial passage in said shaft which in turn communicateS with passages in said central sleeve and sleeve part whereby grease can move from said one end of said shaft to a position adjacent the end of said sleeve part to be distributed to elements within said retainer by means of centrifugal force.
Claim 5
Dependent Claim
40 words
In a torque sensing transmission assembly as recited in claim 1 and wherein bearing means surrounding said sleeve part are interposed between said spring means and one of said cam members for providing relative frictionless rotation between said sheave structures.
Claim 6
Dependent Claim
18 words
In a torque sensing transmission assembly as recited in claim 1 and wherein said cam members are indentical.
Claim 7
Dependent Claim
49 words
In a torque sensing transmission assembly as recited in claim 1 and wherein said assembly is held on said shaft by a nut and washer and can be removed from said shaft by removing the associated V-belt, said nut and washer and sliding said assembly off of said shaft.
Claim 8
Dependent Claim
33 words
In a torque sensing transmission assembly as recited in claim 1 and wherein said sheave structures and unitary package are axially separable from one another when said assembly is removed from said shaft.
Claim 9
Dependent Claim
37 words
The assembly of claim 1 wherein said first cam member is adapted to abut shoulder means on said shaft thereby limiting axial movement of said first cam member in the direction away from said second cam member.
Claim 10
Dependent Claim
67 words
The assembly of claim 1 wherein said first sheave section is releasably secured to said central sleeve, said second sheave section is releasably secured to said sleeve part and the inner diameter of said second sheave section is greater than the outer diameter of said central sleeve, whereby said sheave sections may be removed from said assembly without removing the remainder of said assembly from said shaft.
Claim 11
Dependent Claim
179 words
A torque sensing variable diameter V-belt transmission assembly comprising: a first sheave structure having a central sleeve adapted for connection to one end of a shaft presenting a radially outwardly extending flange, and a first sheave section releasably attached to the outer diameter of said flange, a second sheave structure including a sleeve part rotatably and slidably mounted on said central sleeve and presenting an outwardly radiating hub, and a second sheave section having an inner diameter greater than said outer diameter of said flange, said second sheave section being releasably attached to said hub in opposed relation to said first section, a pair of cooperating cam means mounted on and rotating with said central sleeve and sleeve part, respectively, in torque transmitting relation to one another, and spring means positioned between said cam means biasing said cam means in axially opposite directions, said sheave sections being removable from said flange and hub, respectively, in the axial direction away from said cam means whereby said sheave sections may be removed without disassembly of the remainder of the transmission assembly.
Claim 12
Dependent Claim
179 words
A torque sensing variable diameter V-belt transmission assembly comprising: a first sheave structure having a central sleeve adapted for connection to one end of a shaft presenting a radially outwardly extending flange, and a first sheave section releasably attached to the outer diameter of said flange, a second sheave structure including a sleeve part rotatably and slidably mounted on said central sleeve and presenting an outwardly radiating hub, and a second sheave section having an inner diameter greater than said outer diameter of said flange, said second sheave section being releasably attached to said hub in opposed relation to said first section, a pair of cooperating cam means mounted on and rotating with said central sleeve and sleeve part, respectively, in torque transmitting relation to one another, and spring means positioned between said cam means biasing said cam means in axially opposite directions, said sheave sections being removable from said flange and hub, respectively, in the axial direction away from said cam means whereby said sheave sections may be removed without disassembly of the remainder of the transmission assembly.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |