US3645367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator for clutch and synchronizer brake
Assignee: BORG-WARNER ACCEPTANCE Corp A CORP OF
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Filing: 1970-05-25
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Granted: 1972-02-29
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Expires: 1990-05-25
Abstract
Abstract A transmission for a tractor which includes an engine crankshaft, a transmission input shaft and first and second clutches between the shafts for transmitting power from the engine crankshaft to the transmission input shaft. An inertia brake assembly is supported adjacent the second clutch with a brakeshoe engageable with the drumlike surface of one member of the second clutch. The brake is actuable from the clutch operating pedal for the first clutch when that pedal is depressed beyond a position in which the first clutch is disengaged. The clutch pedal engages the brake with the second clutch to terminate free rotation of the second clutch, the second clutch output member, the transmission input shaft and gearing in the transmission.
Inventors
- 👤 William S Coleman
- 👤 Michael J Mcgraw
- 👤 Lowell W Syverson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:02
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; B60T11/105; B60T11/106; F; F16; F16D; F16D67/00; F16D67/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19284
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
144 words
In a vehicle having an engine, a change gear transmission and first and second clutches connected between said engine and said transmission: a. a throwout mechanism for engaging and disengaging said first clutch; b. brake means adjacent said second clutch comprising a brakeshoe engageable with a member of said second clutch and a pivotable brakeshoe supporting member supported by a housing for said clutches. c. brake actuating means connected to said throwout mechanism and operable to engage said brakeshoe with said member of said second clutch after said first clutch is disengaged; d. said brake actuating means comprising: 1. a lever supported in said housing; 2. a member connected between said lever and said brakeshoe supporting member; and, 3. a cam fixed to a movable member of said throwout mechanism; 4. said lever including a cam follower portion engaging said cam during movement thereof.
Claim 2
Dependent Claim
144 words
In a vehicle having an engine, a change gear transmission and first and second clutches connected between said engine and said transmission: a. a throwout mechanism for engaging and disengaging said first clutch; b. brake means adjacent said second clutch comprising a brakeshoe engageable with a member of said second clutch and a pivotable brakeshoe supporting member supported by a housing for said clutches. c. brake actuating means connected to said throwout mechanism and operable to engage said brakeshoe with said member of said second clutch after said first clutch is disengaged; d. said brake actuating means comprising: 1. a lever supported in said housing; 2. a member connected between said lever and said brakeshoe supporting member; and, 3. a cam fixed to a movable member of said throwout mechanism; 4. said lever including a cam follower portion engaging said cam during movement thereof.
Claim 3
Dependent Claim
12 words
a member connected between said lever and said brakeshoe supporting member; and,
Claim 4
Dependent Claim
12 words
a member connected between said lever and said brakeshoe supporting member; and,
Claim 5
Dependent Claim
35 words
In a vehicle as claimed in claim 1 wherein said throwout mechanism for said first clutch includes a shaft rotatable to disengage said first clutch, said cam of said actuating means fixed to said shaft.
Claim 6
Dependent Claim
26 words
In a vehicle as claimed in claim 1 wherein said member of said second clutch defines an external cylindrical brakedrum surface for engagement by said brakeshoe.
Claim 7
Dependent Claim
11 words
a cam fixed to a movable member of said throwout mechanism;
Claim 8
Dependent Claim
11 words
a cam fixed to a movable member of said throwout mechanism;
Claim 9
Dependent Claim
13 words
said lever including a cam follower portion engaging said cam during movement thereof.
Claim 10
Dependent Claim
13 words
said lever including a cam follower portion engaging said cam during movement thereof.
Claim 11
Dependent Claim
31 words
In a vehicle as claimed in claim 1 and further including a spring supported between said lever and said connecting member for cushioning the force transmitted to said brakeshoe supporting member.
Claim 12
Dependent Claim
37 words
In a vehicle as claimed in claim 4, further including a second spring supported between said brakeshoe supporting member and a part of said housing for urging said brakeshoe away from said member of said second clutch.
Claim 13
Dependent Claim
117 words
In a vehicle having an engine, a change gear transmission and a clutch connected between said engine and said transmission: a. a throwout mechanism for engaging and disengaging said clutch; b. brake means for terminating rotation of parts of said transmission when said clutch is disengaged; c. said brake means comprising a member connected to said transmission defining an external cylindrical brakedrum surface and a brakeshoe supporting member positioned adjacent said brakedrum and movable toward and away from said brakedrum surface; d. structure supporting said brakeshoe supporting member for movement relative to said brakedrum; and, e. cam means connected So said throwout mechanism for moving said brakeshoe supporting member in sequence with operation of said throwout mechanism.
Claim 14
Dependent Claim
117 words
In a vehicle having an engine, a change gear transmission and a clutch connected between said engine and said transmission: a. a throwout mechanism for engaging and disengaging said clutch; b. brake means for terminating rotation of parts of said transmission when said clutch is disengaged; c. said brake means comprising a member connected to said transmission defining an external cylindrical brakedrum surface and a brakeshoe supporting member positioned adjacent said brakedrum and movable toward and away from said brakedrum surface; d. structure supporting said brakeshoe supporting member for movement relative to said brakedrum; and, e. cam means connected So said throwout mechanism for moving said brakeshoe supporting member in sequence with operation of said throwout mechanism.
Claim 15
Dependent Claim
20 words
In a vehicle as claimed in claim 8 wherein said brakedrum is defined by a member of a secondary clutch.
Claim 16
Dependent Claim
37 words
In a vehicle as claimed in claim 6 wherein said cam means comprises a cam member attached to said throwout mechanism and a lever movable by said cam member to effect movement of said brakeshoe supporting member.
Claim 17
Dependent Claim
42 words
In a vehicle as claimed in claim 8 further including spring means reacting against said lever to oppose movement thereof by said cam member, said spring means urging said lever toward a position wherein said brakeshoe is disengaged from said brakedrum surface.
Claim 18
Dependent Claim
57 words
In a vehicle as claimed in claim 8 wherein said brake means is disposed adjacent one side of a housing wall and said cam member and said lever are disposed on an opposite side of said wall, and further including a motion transmitting member extending through said housing wall between said lever and said brakeshoe supporting 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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |