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US4836167A Expired / Lapsed US ⏱️ 0.0 years remaining

Engine governor friction damper and method

Assignee: Cummins Powergen IP Inc
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Filing: 1987-08-31
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Granted: 1989-06-06
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Expires: 2007-08-31
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Abstract

Abstract An engine/governor friction damper mechanism provides for a method of reducing hunting and searching in a governor controlled engine/generator set. The preferred method comprises a modification in a conventional arrangement utilizing a governor rod and pivotal connection with a crank arm on a throttle control assembly. Friction to pivotal movement of the governor rod with respect to the crank arm is provided by means of a spring-loaded friction washer member arrangement.

Inventors

  • 👤 Paul F. Huffman
  • 👤 Ron L. Bardell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 22:34
CPC Classifications
F; F02; F02D; F02D9/00; F02D9/02; F02D29/00; F02D29/06; F02M; F02M19/00; F02M19/12; F02M19/122; F02D2009/0201; F02D2009/0203; F02D2009/0218

Claims Analysis

Total Claims: 32
Claim 1
Independent Claim 272 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm comprising a link having a first end portion with an aperture therein; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension projecting through said crank arm first end aperture; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 2
Dependent Claim 272 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm comprising a link having a first end portion with an aperture therein; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension projecting through said crank arm first end aperture; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 3
Dependent Claim 99 words
A governor mechanism according to claim 1 wherein: (a) said governor rod end portion includes a bend therein; said bend defining said lateral extension, and said lateral extension having a tip; (b) said first friction washer member is positioned on said governor rod end portion between said tip and said crank arm; (c) said damper mechanism includes a second washer member positioned on said governor rod end portion between said crank arm and said bend; and, (d) said biasing member being oriented to force said second washer member and said first washer member together, with said crank arm therebetween.
Claim 4
Dependent Claim 22 words
the governor mechanism according to claim 2 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 5
Dependent Claim 29 words
The governor mechanism according to claim 3 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 6
Dependent Claim 22 words
The governor mechanism according to claim 1 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 7
Dependent Claim 29 words
The governor mechanism according to claim 5 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 8
Dependent Claim 270 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arms first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member, and a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed in response to varying loads placed on the engine.
Claim 9
Dependent Claim 270 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arms first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member, and a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed in response to varying loads placed on the engine.
Claim 10
Dependent Claim 98 words
A governor mechanism according to claim 7 wherein: (a) said governor rod end portion includes a bend therein, said bend defining said lateral extension, and said lateral extension having a tip; (b) said first friction member is positioned on said governor rod end portion between said tip and said crank arm; (c) said damper mechanism includes a second washer member positioned on said governor rod end portion between said crank arm and said bend; and, (d) said biasing member being oriented to force said second washer member and said first washer member together, with said crank arm therebetween.
Claim 11
Dependent Claim 22 words
The governor mechanism according to claim 8 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 12
Dependent Claim 29 words
The governor mechanism according to claim 9 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 13
Dependent Claim 22 words
The governor mechanism according to claim 7 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 14
Dependent Claim 29 words
The governor mechanism according to claim 11 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 15
Dependent Claim 276 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control for accelerating and decelerating the engine; said crank arm comprising a link having a first end portion with an aperture therein; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension projecting through said crank arm first end aperture; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 16
Dependent Claim 276 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control for accelerating and decelerating the engine; said crank arm comprising a link having a first end portion with an aperture therein; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension projecting through said crank arm first end aperture; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 17
Dependent Claim 99 words
A governor mechanism according to claim 13 wherein: (a) said governor rod end portion includes a bend therein, said bend defining said lateral extension and said lateral extension having a tip; (b) said first friction washer member is positioned on said governor rod end portion between said tip and said crank arm; (c) said damper mechanism includes a second washer member positioned on said governor rod end portion between said crank arm and said bend; and, (d) said biasing member being oriented to force said second washer member and said first washer member together, with said crank arm therebetween.
Claim 18
Dependent Claim 22 words
The governor mechanism according to claim 14 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 19
Dependent Claim 28 words
The governor mechanism according to claim 14 wherein said spring is constructed and arranged to apply force of between one and three pounds against said first washer member.
Claim 20
Dependent Claim 22 words
The governor mechanism according to claim 13 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 21
Dependent Claim 29 words
The governor mechanism according to claim 16 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 22
Dependent Claim 271 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 23
Dependent Claim 271 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member against said first friction washer member generates selected frictional resistance to movement of said crank arm by said governor rod; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 24
Dependent Claim 99 words
A governor mechanism according to claim 19 wherein: (a) said governor rod end portion includes a bend therein, said bend defining said lateral extension, and said lateral extension having a tip; (b) said first friction washer member is positioned on said governor rod end portion between said tip and said crank arm; (c) said damper mechanism includes a second washer member positioned on said governor rod end portion between said crank arm and said bend; and, (d) said biasing member being oriented to force said second washer member and said first washer member together, with said crank arm therebetween.
Claim 25
Dependent Claim 22 words
The governor mechanism according to claim 2 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 26
Dependent Claim 29 words
The governor mechanism according to claim 20 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 27
Dependent Claim 22 words
The governor mechanism according to claim 20 wherein: (a) said biasing member comprises a spring mounted on said governor rod end portion.
Claim 28
Dependent Claim 29 words
The governor mechanism according to claim 21 wherein said spring is constructed and arranged to apply a force of between one and three pounds against said first washer member.
Claim 29
Dependent Claim 278 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member, and a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member generates selected frictional resistance to movement of said crank arm by said governor rod due to frictional engagement of said friction washer with part of said governor mechanism; said selected friction inhibiting searching of the governor mechanism for a desired speed in response to varying loads placed on the engine.
Claim 30
Dependent Claim 278 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in a manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including a first friction washer member, and a biasing member; (i) said first friction washer member and said crank arm being biased toward one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member generates selected frictional resistance to movement of said crank arm by said governor rod due to frictional engagement of said friction washer with part of said governor mechanism; said selected friction inhibiting searching of the governor mechanism for a desired speed in response to varying loads placed on the engine.
Claim 31
Dependent Claim 279 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member generates selected frictional resistance to movement of said crank arm by said governor rod due to frictional engagement of said friction washer with a portion of said governor mechanism; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.
Claim 32
Dependent Claim 279 words
A dampened governor mechanism for selectively adjusting a speed of an associated engine in response to variations in engine load, the engine including a throttle control; said dampened governor mechanism comprising: (a) a crank arm constructed and arranged to selectively adjust the throttle control, for accelerating and decelerating the engine; said crank arm having a first end portion; (b) a governor rod mechanism including a governor member; said governor member comprising a governor rod including an end portion with a lateral extension; said governor rod lateral extension rotatably engaging said crank arm first end portion; said governor rod being constructed and arranged to adjust a rotational orientation of said throttle control, as selected; (c) means for detecting variations in engine speed and adjusting a position of said governor rod in response thereto, in manner selectively accelerating and decelerating the engine as necessary to substantially maintain a desired engine speed; and, (d) a friction damper mechanism constructed and arranged to provide selected, operable, resistance to movement of said crank arm by said governor rod; said friction damper mechanism including: a first friction washer member; and, a biasing member; (i) said first friction washer member and said crank arm being biased relative to one another by said biasing member; (ii) said biasing member being mounted on said governor rod and being operatively positioned so that pressure of said biasing member generates selected frictional resistance to movement of said crank arm by said governor rod due to frictional engagement of said friction washer with a portion of said governor mechanism; said selected friction inhibiting searching of the governor mechanism for a desired speed, in response to varying loads placed on the engine.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-06-05 1992-12-05 1993-06-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-06-05 1996-12-05 1997-06-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-06-05 2000-12-05 2001-06-06 $7700.00 Window Closed / Lapsed

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