Patent US4102154A successfully refreshed from Google Patents.
US4102154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque disconnect safety coupling
Assignee: Individual
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Filing: 1976-09-07
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Granted: 1978-07-25
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Expires: 1996-09-07
Abstract
Abstract A torque release coupling in which a coupling hub is connected to the shaft of a prime mover for rotation. The coupling hub acts as a driving member for a rotary member which comprises a coupling housing, in turn secured to a driven apparatus. The coupling housing is provided with a plurality of radial pistons and is provided with notch means therein for receiving a plurality of axial piston means with the piston means being provided with biasing means to urge the axial piston means into the notched means of the radial piston means. The coupling hub is provided with a cam means having cam pockets therein for receiving the inner end of the radial piston means. The radial piston means can be provided with weight means which cooperate with the axial piston means to provide a centrifugaly assisted torque disconnect coupling. The cam pocket means can have a ratchet configuration so that the disconnect coupling can operate in a unirotational direction and when rotated in the opposite or counterclockwise direction can reseat themselves in the cam pocket means without requiring manual resetting thereof.
Inventors
- 👤 Josef Dahlstrand, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/202; F16D43/2028; F16D41/00; F16D41/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
303 words
In a torque release coupling; a drive hub, having a cylindrical outer periphery with circumferentially spaced cam lobes therein, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, a radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with a slidable axial piston disposed therein, said radial piston having notch means therein facing said axial piston, said axial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in said notch mean when said hub and housing are engaged in driving relation to resist the torque, adjustable biasing means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing the inner end of the radial piston into said cam lobe, and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial piston; whereby said axial piston and radial piston coact to maintain the hub and housing in engagement with each other when the torque is below a predetermined value.
Claim 2
Dependent Claim
303 words
In a torque release coupling; a drive hub, having a cylindrical outer periphery with circumferentially spaced cam lobes therein, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, a radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with a slidable axial piston disposed therein, said radial piston having notch means therein facing said axial piston, said axial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in said notch mean when said hub and housing are engaged in driving relation to resist the torque, adjustable biasing means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing the inner end of the radial piston into said cam lobe, and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial piston; whereby said axial piston and radial piston coact to maintain the hub and housing in engagement with each other when the torque is below a predetermined value.
Claim 3
Dependent Claim
20 words
The release coupling of claim 1 wherein said radial piston has a threaded member inserted into the outer portion thereof.
Claim 4
Dependent Claim
26 words
The release coupling of claim 1 wherein said adjustable biasing means is a spring member and a plug member maintains it bearing against said axial piston.
Claim 5
Dependent Claim
22 words
The release coupling of claim 1 wherein said notch means comprise two recesses contiguous to each other forming a W - shape.
Claim 6
Dependent Claim
280 words
In a unirotational torque release coupling, a drive hub, having a cylindrical outer periphery with circumferentially spaced cam lobes therein, said cam lobes having a portion of their profile forming a ratchet pocket in the direction of rotation, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, a radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with slidable axial pistons disposed therein, said radial piston having notch means therein facing said axial piston, said axial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in driving relation to resist the torque, adjustable means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing inner end of the radial into said cam lobe and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial position.
Claim 7
Dependent Claim
280 words
In a unirotational torque release coupling, a drive hub, having a cylindrical outer periphery with circumferentially spaced cam lobes therein, said cam lobes having a portion of their profile forming a ratchet pocket in the direction of rotation, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, a radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with slidable axial pistons disposed therein, said radial piston having notch means therein facing said axial piston, said axial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in driving relation to resist the torque, adjustable means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing inner end of the radial into said cam lobe and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial position.
Claim 8
Dependent Claim
14 words
The release coupling of claim 5 wherein said notch means comprises a single recess.
Claim 9
Dependent Claim
298 words
In a unirotational torque release coupling, a drive hub having a cylindrical outer periphery with circumferentially spaced cam lobes therein, said cam lobes having a portion of their profile forming a ratchet pocket thereon in the direction of rotation, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with a slidable axial piston disposed therein, said radial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in driving relation to resist the torque, adjustable biasing means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing inner end of the radial into said cam lobe, and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial piston whereby said axial piston and radial piston coact to maintain the hub and housing in engagement with each other when the torque is below a predetermined value.
Claim 10
Dependent Claim
298 words
In a unirotational torque release coupling, a drive hub having a cylindrical outer periphery with circumferentially spaced cam lobes therein, said cam lobes having a portion of their profile forming a ratchet pocket thereon in the direction of rotation, a driven rotary member comprising an annular housing circumferentially spaced about said hub and adapted to be driven thereby, radial piston slidably disposed in a radial bore in said housing and having an inner end for engagement in said cam lobes for releasably engaging and locking said hub and housing in driving relation, said inner end being shaped to conform to the profile of said cam lobe, said housing having an axial bore intersecting said radial bore with a slidable axial piston disposed therein, said radial piston having an end to conform to said notch means and adapted to be engaged in said notch means when said hub and housing are engaged in driving relation to resist the torque, adjustable biasing means disposed in said axial bore normally urging said axial piston into engagement with said radial piston when the torque is below a predetermined value, said radial piston extending externally outside of the periphery of said housing and having adjustable and detachable weight means disposed on the externally extending portion to permit readily changing of said weights for varying the centrifugal force causing inner end of the radial into said cam lobe, and means preventing said radial piston from being released from the housing when a predetermined torque overload is exceeded comprising shroud means secured to said housing with a portion thereof extending into a recess disposed in said radial piston whereby said axial piston and radial piston coact to maintain the hub and housing in engagement with each other when the torque is below a predetermined value.
Claim 11
Dependent Claim
14 words
The release coupling of claim 7. wherein said notch means comprises a single recess.
Claim 12
Dependent Claim
14 words
The release coupling of claim 8 wherein said biasing means is a spring member.
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) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |