US3598147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanisms for feeding air into a rotary member
Assignee: Nippon Piston Ring Co Ltd
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Filing: 1970-02-24
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Granted: 1971-08-10
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Expires: 1990-02-24
Abstract
Abstract A mechanism for feeding compressed air from a stationary air line to a rotating, air-operated clutch has a disc mounted on the rotating clutch body and partly enclosed in an annular chamber in a casing open toward the axis of rotation. The casing is freely rotatably mounted on the rotating member and stationary. Annular, circular grooves in axially opposite walls of the chamber receive sealing rings which may be forced outward of the grooves into engagement with the disc by compressed air fed to the grooves. A duct in the disc connects the chamber with the hollow interior of the clutch body and is controlled by a valve which is opened when one of the sealing rings is forced out of the associated groove.
Inventors
- 👤 Tadao Kosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:52
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D25/00; F16D25/12; F16D25/14; F16D2048/0221; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86268
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
238 words
A fluid operated apparatus comprising, in combination: a. a hollow member mounted for rotation about an axis; b. a casing defining an annular chamber about said axis, 1. said casing having two axially spaced walls in said chamber, 2. said chamber being open toward said axis, and 3. said casing being mounted on said member for rotation relative to the same, whereby said casing may be stationary during said rotation of said hollow member; c. a disc member mounted on said hollow member for rotation about said axis and partly received in said chamber between said walls, 1. said disc member being formed with a duct sealed from the ambient atmosphere and connecting the interIor of said hollow member to said chamber; d. a valve movable in said duct between a duct-opening and a duct-closing position; e. two sealing members annular about said axis and received in respective grooves of said walls for axial movement toward and away from said disc member in sealing engagement with said casing; f. three conduits respectively communicating with said chamber and with said grooves and adapted to supply fluid under pressure so as to axially move said sealing members outward of the associated grooves toward said disc member; and g. motion transmitting means interposed between one of said sealing members and said valve for moving the valve between said positions thereof in response to said axial movement of said one sealing member.
Claim 2
Dependent Claim
238 words
A fluid operated apparatus comprising, in combination: a. a hollow member mounted for rotation about an axis; b. a casing defining an annular chamber about said axis, 1. said casing having two axially spaced walls in said chamber, 2. said chamber being open toward said axis, and 3. said casing being mounted on said member for rotation relative to the same, whereby said casing may be stationary during said rotation of said hollow member; c. a disc member mounted on said hollow member for rotation about said axis and partly received in said chamber between said walls, 1. said disc member being formed with a duct sealed from the ambient atmosphere and connecting the interIor of said hollow member to said chamber; d. a valve movable in said duct between a duct-opening and a duct-closing position; e. two sealing members annular about said axis and received in respective grooves of said walls for axial movement toward and away from said disc member in sealing engagement with said casing; f. three conduits respectively communicating with said chamber and with said grooves and adapted to supply fluid under pressure so as to axially move said sealing members outward of the associated grooves toward said disc member; and g. motion transmitting means interposed between one of said sealing members and said valve for moving the valve between said positions thereof in response to said axial movement of said one sealing member.
Claim 3
Dependent Claim
8 words
said chamber being open toward said axis, and
Claim 4
Dependent Claim
8 words
said chamber being open toward said axis, and
Claim 5
Dependent Claim
49 words
An apparatus as set forth in claim 1, wherein said motion transmitting means are effective for moving said valve member from said duct closing toward said duct-opening position in response to movement of said one sealing member outward of the associated groove under the pressure of the supplied fluid.
Claim 6
Dependent Claim
49 words
said casing being mounted on said member for rotation relative to the same, whereby said casing may be stationary during said rotation of said hollow member; c. a disc member mounted on said hollow member for rotation about said axis and partly received in said chamber between said walls,
Claim 7
Dependent Claim
49 words
said casing being mounted on said member for rotation relative to the same, whereby said casing may be stationary during said rotation of said hollow member; c. a disc member mounted on said hollow member for rotation about said axis and partly received in said chamber between said walls,
Claim 8
Dependent Claim
60 words
An apparatus as set forth in claim 1, wherein said valve moves axially between said positions thereof, and said motion-transmitting means include a motion-transmitting member axially movable on said disc member, yieldably resilient means biasing said motion-transmitting member axially toward said one sealing member, and a pin member axially projecting from said motion-transmitting member for abutting engagement with said valve.
Claim 9
Dependent Claim
21 words
An apparatus as set forth in claim 1, wherein said grooves are circular and conformingly engaged by said sealing members respectively.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |