US3624769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure venting control
Assignee: Eaton Corp
•
Filing: 1970-04-20
•
Granted: 1971-11-30
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Expires: 1990-04-20
Abstract
Abstract A ram to which fluid pressure is supplied for actuation of any desired article (exemplified both by a Reeves pulley rate changer and by a disk clutch) is automatically vented when fluid is no longer supplied, thereby allowing the actuated article promptly to resume its initial position. The vent controlling valve includes a centrally apertured resilient disk which normally assumes a position in which its central aperture is spaced from a seat which the central portion of the disk engages when under pressure. Vent ducts radially offset from the opening in the valve disk discharge fluid when the disk is not subject to substantial pressure. However, when the ram is actuated the differential pressure across the disk causes the disk to engage the seat, thus substantially terminating fluid discharge by closing either or both of the discharge ducts.
Inventors
- 👤 Quinten A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7879; Y10T137/7888
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
53 words
A fluid pressure actuated clutch comprising a disk pack and means for maintaining the disks normally separated for the disengagement of the clutch, a fluid pressure ram for engaging the disks and including a pressure chamber, and means comprising a resiliently dished valve for venting said chamber upon partial relief of pressure therein.
Claim 2
Dependent Claim
53 words
A fluid pressure actuated clutch comprising a disk pack and means for maintaining the disks normally separated for the disengagement of the clutch, a fluid pressure ram for engaging the disks and including a pressure chamber, and means comprising a resiliently dished valve for venting said chamber upon partial relief of pressure therein.
Claim 3
Dependent Claim
74 words
A combination according to claim 1 in further combination with valve control means for admitting fluid under pressure to said chamber, said chamber having a seat against which said resilient dished valve engages when said chamber is subjected to pressure, said valve and seat having separable portions between which fluid in said chamber is vented to relieve ram pressure on said disks when the resilience of said valve effects separation of said separable portions.
Claim 4
Dependent Claim
91 words
In combination, a pressure chamber, means for venting said chamber, a resilient spring steel disk valve controlling said venting means, means for supplying pressure fluid to said chamber, said disk provided with a centrally located port through which said vented pressure fluid flows, and a seat against which the marginal portion about said port of said disk engages for shutting the valve-controlled venting means when admission of pressure fluid to said chamber establishes a pressure differential across said disk valve sufficient to deform said disk valve from its normally venting position.
Claim 5
Dependent Claim
91 words
In combination, a pressure chamber, means for venting said chamber, a resilient spring steel disk valve controlling said venting means, means for supplying pressure fluid to said chamber, said disk provided with a centrally located port through which said vented pressure fluid flows, and a seat against which the marginal portion about said port of said disk engages for shutting the valve-controlled venting means when admission of pressure fluid to said chamber establishes a pressure differential across said disk valve sufficient to deform said disk valve from its normally venting position.
Claim 6
Dependent Claim
51 words
A combination according to claim 3 in which the disk valve controlling said venting means is self-opening at a variable rate to relieve pressure in said chamber when supply of pressure fluid to the chamber is terminated, said variable rate determined by the spring characteristic of said spring steel disk valve.
Claim 7
Dependent Claim
69 words
A combination according to claim 4 in which said chamber has a movable wall portion operatively engaged with an actuated device and subject to biasing means to which the pressure of said fluid is opposed, said wall portion and device being operable in one direction when pressure fluid is supplied to said chamber and operable in the opposite direction by said biasing means when said valve-controlled venting means opens.
Claim 8
Dependent Claim
38 words
A combination according to claim 3 in which the valve controlling said venting means includes a port, said valve disk including marginal portions about said port which are engageable with said seat to interrupt flow through said port.
Claim 9
Dependent Claim
14 words
A combination according to claim 6 in which the said disk is normally dished.
Claim 10
Dependent Claim
45 words
A combination according to claim 6 in which the seat is of sufficient diameter to be engaged by disK portions beyond the port when said disk is subject to pressure, said last disk portions further releasably closing at least one duct constituting said venting means.
Claim 11
Dependent Claim
89 words
A combination according to claim 3 in which said chamber has a wall which is centrally impervious and provides said seat, said wall being provided with at least one duct radially offset from said seat and which normally communicates with said chamber through a central port with which the valve disk is provided, the disk having marginal portions about said port which engage said seat when the valve is subject to sufficient pressure differential across said port to cause the valve to flex in opposition to its resilient bias.
Claim 12
Dependent Claim
35 words
A combination according to claim 9 in which the valve disk is normally convex and has portions spaced outwardly from said port which are normally engaged with said seat radially outside of the said duct.
Claim 13
Dependent Claim
36 words
A combination according to claim 9 in which the portion of said wall which provides the seat is axially offset from the portion of said wall with which peripheral portions of said disk are normally engaged.
Claim 14
Dependent Claim
168 words
In combination, a pressure chamber, means for venting said chamber, a flat resilient disk valve controlling said venting means, means for supplying fluid pressure to said chamber, said chamber having a centrally impervious wall providing a seat against which a portion of said disk valve engages for shutting the valve-controlled venting means when admission of pressure fluid to said chamber establishes a pressure differential across said valve, said wall being provided with at least one duct radially offset from said seat and which normally communicates with said chamber through a central port with which the valve disk is provided, the disk having marginal portions about said port which engage said seat when the valve disk is subject to sufficient pressure differential across said port to cause the disk to flex in opposition to its resilient bias, the portion of said seat opposite the port in said disk being axially offset from the portion of said seat engaged by portions of the disk radially remote from said control port.
Claim 15
Dependent Claim
168 words
In combination, a pressure chamber, means for venting said chamber, a flat resilient disk valve controlling said venting means, means for supplying fluid pressure to said chamber, said chamber having a centrally impervious wall providing a seat against which a portion of said disk valve engages for shutting the valve-controlled venting means when admission of pressure fluid to said chamber establishes a pressure differential across said valve, said wall being provided with at least one duct radially offset from said seat and which normally communicates with said chamber through a central port with which the valve disk is provided, the disk having marginal portions about said port which engage said seat when the valve disk is subject to sufficient pressure differential across said port to cause the disk to flex in opposition to its resilient bias, the portion of said seat opposite the port in said disk being axially offset from the portion of said seat engaged by portions of the disk radially remote from said control port.
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |