Patent US3709063A successfully refreshed from Google Patents.
US3709063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change speed transmission
Assignee: Individual
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Filing: 1971-02-16
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Granted: 1973-01-09
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Expires: 1991-02-16
Abstract
Abstract A change speed transmission comprises rotatable input and output drive assemblies which are selectively connected by friction gearing to transmit power between an engine shaft and a driven device at different speed ratios. A body of one of the assemblies defines one direct drive friction gear member and part of an epicyclic friction gear unit. The other assembly carries a shifting member which is movable between one position for engagement with the direct drive friction gear member and a second position for engaging the epicyclic gear unit to provide a speed change between the drive assemblies.
Inventors
- 👤 W Moorhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:15
CPC Classifications
F; F16; F16H; F16H13/00; F16H13/06; F16H13/08; F16H15/00; F16H15/48; F16H15/56
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
382 words
A transmission comprising: a. a housing; b. an input member supported by said housing and rotatable about an axis extending through said housing; c. an output member rotatable about said axis; d. one of said members being surrounded by at least a portion of the other member; and, e. a change speed transmission means for transmitting drive from said input member to said output member comprising; 1. a shifting member surrounding a portion of said one of said input or output members; 2. connecting means between said shifting member and said one input or output member for preventing relative rotation between said shifting member and said one input or output member and enabling sliding movement of saId shifting member relative to said one input or output member parallel to said axis; 3. said shifting member defining at least first and second drive transmitting faces at spaced locations thereon; 4. epicyclic friction drive means comprising a plurality of planetary roller elements rotatably supported by the other input or output member, a stationary bearing face supported by said housing for engagement by said roller elements, said shifting member movable axially relative to said input and output members to a first position for engaging said roller elements between said bearing face and one of said first and second drive transmitting faces whereby drive is transmitted from said input member to said output member with said input and output members rotating at different angular speeds; 5. friction drive means comprising a friction surface supported by said other input or output member and the other of said first and second drive transmitting faces, said shifting member movable axially relative to said input and output members to a second position for engaging said other drive transmitting face with said friction surface to transmit drive from said input member to said output member with said input and output members rotating at the same angular speed when said friction surface engages said other drive transmitting face without slipping; and, 6. actuator means for effecting movement of said shifting member axially relative to said input and output members between said first and second positions, said actuator means also effective to position said shifting member axially between said first and second positions to interrupt drive transmission between said input and output members.
Claim 2
Dependent Claim
382 words
A transmission comprising: a. a housing; b. an input member supported by said housing and rotatable about an axis extending through said housing; c. an output member rotatable about said axis; d. one of said members being surrounded by at least a portion of the other member; and, e. a change speed transmission means for transmitting drive from said input member to said output member comprising; 1. a shifting member surrounding a portion of said one of said input or output members; 2. connecting means between said shifting member and said one input or output member for preventing relative rotation between said shifting member and said one input or output member and enabling sliding movement of saId shifting member relative to said one input or output member parallel to said axis; 3. said shifting member defining at least first and second drive transmitting faces at spaced locations thereon; 4. epicyclic friction drive means comprising a plurality of planetary roller elements rotatably supported by the other input or output member, a stationary bearing face supported by said housing for engagement by said roller elements, said shifting member movable axially relative to said input and output members to a first position for engaging said roller elements between said bearing face and one of said first and second drive transmitting faces whereby drive is transmitted from said input member to said output member with said input and output members rotating at different angular speeds; 5. friction drive means comprising a friction surface supported by said other input or output member and the other of said first and second drive transmitting faces, said shifting member movable axially relative to said input and output members to a second position for engaging said other drive transmitting face with said friction surface to transmit drive from said input member to said output member with said input and output members rotating at the same angular speed when said friction surface engages said other drive transmitting face without slipping; and, 6. actuator means for effecting movement of said shifting member axially relative to said input and output members between said first and second positions, said actuator means also effective to position said shifting member axially between said first and second positions to interrupt drive transmission between said input and output members.
Claim 3
Dependent Claim
67 words
The transmission claimed in claim 1 wherein said actuator means comprises spring means supported by said one of said input or output member for rotation therewith and with said shifting member, said spring means reacting between said one input or output member and said shifting member to urge said shifting member axially relative to said input and output members toward one of said first and second positions.
Claim 4
Dependent Claim
48 words
connecting means between said shifting member and said one input or output member for preventing relative rotation between said shifting member and said one input or output member and enabling sliding movement of saId shifting member relative to said one input or output member parallel to said axis;
Claim 5
Dependent Claim
48 words
connecting means between said shifting member and said one input or output member for preventing relative rotation between said shifting member and said one input or output member and enabling sliding movement of saId shifting member relative to said one input or output member parallel to said axis;
Claim 6
Dependent Claim
16 words
said shifting member defining at least first and second drive transmitting faces at spaced locations thereon;
Claim 7
Dependent Claim
16 words
said shifting member defining at least first and second drive transmitting faces at spaced locations thereon;
Claim 8
Dependent Claim
96 words
The transmission claimed in claim 2 wherein said actuator means further comprises cam means comprising a first cam face fixed against rotation with respect to said housing, a cam member comprising a second cam face engaging said first cam face and rotatably movable with respect to said housing and said first cam face, and a speed changing member connected to said cam member for rotating said cam member relative to said first cam face, one of said cam faces axially movable relative to said input and output members for effecting axial movement of said shifting member.
Claim 9
Dependent Claim
74 words
A transmission as claimed in claim 1 wherein said roller members are supported for rotation with respect to said other input or output member about planetary axes extending radially from said axis, each roller member comprising at least first and second cylindrical portions having different diametrical extents, one of said portions engageable with said bearing face and the other of said portions engageable with said one of said first and second drive transmitting faces.
Claim 10
Dependent Claim
92 words
epicyclic friction drive means comprising a plurality of planetary roller elements rotatably supported by the other input or output member, a stationary bearing face supported by said housing for engagement by said roller elements, said shifting member movable axially relative to said input and output members to a first position for engaging said roller elements between said bearing face and one of said first and second drive transmitting faces whereby drive is transmitted from said input member to said output member with said input and output members rotating at different angular speeds;
Claim 11
Dependent Claim
92 words
epicyclic friction drive means comprising a plurality of planetary roller elements rotatably supported by the other input or output member, a stationary bearing face supported by said housing for engagement by said roller elements, said shifting member movable axially relative to said input and output members to a first position for engaging said roller elements between said bearing face and one of said first and second drive transmitting faces whereby drive is transmitted from said input member to said output member with said input and output members rotating at different angular speeds;
Claim 12
Dependent Claim
89 words
friction drive means comprising a friction surface supported by said other input or output member and the other of said first and second drive transmitting faces, said shifting member movable axially relative to said input and output members to a second position for engaging said other drive transmitting face with said friction surface to transmit drive from said input member to said output member with said input and output members rotating at the same angular speed when said friction surface engages said other drive transmitting face without slipping; and,
Claim 13
Dependent Claim
89 words
friction drive means comprising a friction surface supported by said other input or output member and the other of said first and second drive transmitting faces, said shifting member movable axially relative to said input and output members to a second position for engaging said other drive transmitting face with said friction surface to transmit drive from said input member to said output member with said input and output members rotating at the same angular speed when said friction surface engages said other drive transmitting face without slipping; and,
Claim 14
Dependent Claim
50 words
actuator means for effecting movement of said shifting member axially relative to said input and output members between said first and second positions, said actuator means also effective to position said shifting member axially between said first and second positions to interrupt drive transmission between said input and output members.
Claim 15
Dependent Claim
50 words
actuator means for effecting movement of said shifting member axially relative to said input and output members between said first and second positions, said actuator means also effective to position said shifting member axially between said first and second positions to interrupt drive transmission between said input and output members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |