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US3675751A Expired / Lapsed US ⏱️ 0.0 years remaining

Torque or motion responsive apparatus

Assignee: CAVINS CO
•
Filing: 1970-10-20
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Granted: 1972-07-11
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Expires: 1990-10-20
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Abstract

Abstract A device adapted to respond to the application of excessive torque or excessive movement of a part, and including a shaft which upon excessive rotary movement in opposite directions will displace a cam which actuates electrical switches for controlling a motor or the like. The shaft carries two cam drivers which are adjustable rotatively relative to the shaft to vary the extent of shaft movement required for actuation of the cam.

Inventors

  • 👤 William D Fortner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 20:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/047; F16K31/048; F16H; F16H35/00; F16H35/10; G; G05; G05G; G05G15/00; G05G15/08

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 194 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said cam and to then turn the cam with the member after said lost motion, interfitting spline means on each of said drivers and said member operable to key each driver and said member together rotatively in different relative angular positions and movable out of interfitting relation by axial retraction of the driver relative to said member and in a direction axially away from the other driver, to a position in which said retracted driver may be adjusted rotatively to a changed relative setting altering the extent of said lost motion for that driver, and spring means yieldingly urging said drivers axially toward one another and to active positions thereof.
Claim 2
Independent Claim 194 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said cam and to then turn the cam with the member after said lost motion, interfitting spline means on each of said drivers and said member operable to key each driver and said member together rotatively in different relative angular positions and movable out of interfitting relation by axial retraction of the driver relative to said member and in a direction axially away from the other driver, to a position in which said retracted driver may be adjusted rotatively to a changed relative setting altering the extent of said lost motion for that driver, and spring means yieldingly urging said drivers axially toward one another and to active positions thereof.
Claim 3
Independent Claim 140 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, a driver mounted to turn about said axis and operable to transmit rotary motion from said member to said cam, said driver being constructed to permit initial rotary lost motion of said member without driving said cam to then turn the cam with the member after said lost motion, said driver being adjustable in a relation varying the angular extent of said lost motion of said member before actuation of said cam, means for latching said cam in said deflected position, and means for releasing said latching means in response to reverse turning movement of said member.
Claim 4
Independent Claim 140 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, a driver mounted to turn about said axis and operable to transmit rotary motion from said member to said cam, said driver being constructed to permit initial rotary lost motion of said member without driving said cam to then turn the cam with the member after said lost motion, said driver being adjustable in a relation varying the angular extent of said lost motion of said member before actuation of said cam, means for latching said cam in said deflected position, and means for releasing said latching means in response to reverse turning movement of said member.
Claim 5
Independent Claim 154 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without drivinG said cam and to then turn the cam with the member after said lost motion, said drivers being separately adjustable to vary the angular extent of the lost motion thereof, means for releasably latching said cam in each of two oppositely rotatively deflected positions, said means for releasing said latching means and thereby said cam from either of said deflected positions in response to reverse turning movement of said member.
Claim 6
Independent Claim 154 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without drivinG said cam and to then turn the cam with the member after said lost motion, said drivers being separately adjustable to vary the angular extent of the lost motion thereof, means for releasably latching said cam in each of two oppositely rotatively deflected positions, said means for releasing said latching means and thereby said cam from either of said deflected positions in response to reverse turning movement of said member.
Claim 7
Independent Claim 153 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said cam and to then turn the cam with the member after said lost motion, said drivers being separately adjustable to vary the angular extent of the lost motion thereof, and two latch elements yieldingly urged toward one another and against opposite sides of said cam and engageable with two shoulders respectively on the cam in a relation latching the cam in each of two oppositely rotatively deflected positions.
Claim 8
Independent Claim 153 words
A device comprising a member mounted to turn about an axis, a cam mounted to be turned about said axis by said member but with lost motion, control means actuable by said cam upon predetermined turning movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit rotary motion from said member to said cam in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said cam and to then turn the cam with the member after said lost motion, said drivers being separately adjustable to vary the angular extent of the lost motion thereof, and two latch elements yieldingly urged toward one another and against opposite sides of said cam and engageable with two shoulders respectively on the cam in a relation latching the cam in each of two oppositely rotatively deflected positions.
Claim 9
Dependent Claim 44 words
A device as recited in claim 4, including a releasing element turning with said member and operable to release said latch elements in response to reverse turning movement of said member, and spring means yieldingly urging said cam rotatively to a predetermined normal position.
Claim 10
Independent Claim 117 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, a driver mounted to turn about said axis and operable to transmit motion from said member to said structure, said driver being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, means for latching said structure in said deflected position, and means for releasing said latching means in response to reverse rotary movement of said member.
Claim 11
Independent Claim 117 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, a driver mounted to turn about said axis and operable to transmit motion from said member to said structure, said driver being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, means for latching said structure in said deflected position, and means for releasing said latching means in response to reverse rotary movement of said member.
Claim 12
Independent Claim 157 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit motion from said member to said structure in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, means for latching said structure in said deflected position, said latching means being operable to releasably retain said structure in either of two oppositely rotatively deflected positions, means yieldingly urging said structure to an intermediate normal position, and means for releasing said latching means and said structure from either of said deflected positions by reverse movement of said member.
Claim 13
Independent Claim 157 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, two drivers mounted to turn about said axis and operable to transmit motion from said member to said structure in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, means for latching said structure in said deflected position, said latching means being operable to releasably retain said structure in either of two oppositely rotatively deflected positions, means yieldingly urging said structure to an intermediate normal position, and means for releasing said latching means and said structure from either of said deflected positions by reverse movement of said member.
Claim 14
Dependent Claim 38 words
A device as recited in claim 7, in which said latching means include two latch elements spring urged toward one another and against opposite sides of said structure and engageable with shoulders on said structure in latching relation.
Claim 15
Dependent Claim 40 words
A device as recited in claim 8, in which said releasing means include a releasing part mounted to turn with said member and adapted to engage one of said latch elements and deflect it away from the other latch element.
Claim 16
Independent Claim 94 words
A device comprising a member mounted to turn about an axis, two drivers mounted about said member to turn therewith, a structure disposed about said drivers and adapted to be turned thereby but with lost Motion, control means actuable by said structure to produce an output signal upon predetermined turning movement of said structure, and complementary bearing surfaces on said two drivers engaging different portions respectively of said structure and mounting the latter for turning movement about said axis relative to said drivers, said two drivers being separately rotatively adjustable relative to said member.
Claim 17
Independent Claim 94 words
A device comprising a member mounted to turn about an axis, two drivers mounted about said member to turn therewith, a structure disposed about said drivers and adapted to be turned thereby but with lost Motion, control means actuable by said structure to produce an output signal upon predetermined turning movement of said structure, and complementary bearing surfaces on said two drivers engaging different portions respectively of said structure and mounting the latter for turning movement about said axis relative to said drivers, said two drivers being separately rotatively adjustable relative to said member.
Claim 18
Independent Claim 185 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, two drivers disposed about said member and mounted to turn about said axis and operable to transmit motion from said member to said structure in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, interfitting means on each of said drivers and said member operable to key each driver to said member rotatively in different relative angular positions, said interfitting means being movable out of interfitting relation by axial retraction of each driver relative to said member to a position in which said driver may be adjusted rotatively to a changed relative setting altering the extent of said lost motion, and spring means urging said drivers toward one another to active positions interfitting with said member.
Claim 19
Independent Claim 185 words
A device comprising a member mounted to turn about an axis, a structure mounted to be moved by said member but with lost motion, control means actuable by said structure upon predetermined movement thereof to produce an output signal, two drivers disposed about said member and mounted to turn about said axis and operable to transmit motion from said member to said structure in opposite directions respectively, each of said drivers being constructed to permit initial rotary lost motion of said member without driving said structure and to then move the structure with the member to a deflected position after said lost motion, interfitting means on each of said drivers and said member operable to key each driver to said member rotatively in different relative angular positions, said interfitting means being movable out of interfitting relation by axial retraction of each driver relative to said member to a position in which said driver may be adjusted rotatively to a changed relative setting altering the extent of said lost motion, and spring means urging said drivers toward one another to active positions interfitting with said member.

References Cited (Backward Citations)

US1764936A Cited
US2151493A Cited
US2144322A Cited
US3209090A Cited
US3480746A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-07-11 1976-01-10 1976-07-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-11 1980-01-10 1980-07-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-11 1984-01-10 1984-07-11 $7700.00 Window Closed / Lapsed

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