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US3646969A Expired / Lapsed US ⏱️ 0.0 years remaining

Valve mechanism

Assignee: Parker Hannifin Manufacturing Switzerland SA
•
Filing: 1970-03-23
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Granted: 1972-03-07
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Expires: 1990-03-23
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Abstract

Abstract A valve mechanism including a movable system carrying two valve members closing selectively two channels through engagement with their seats, at least one valve member being carried floatingly by a spring with the interposition of a rigid member fitted over the outer peripheral deformable edge of an intermediate yielding washer or the like member engaging through its inner peripheral edge the valve member considered. Similarly the seat of another valve member may be carried floatingly by a spring and form a rigid annular member fitted over the inner deformable edge of an intermediate yielding washer or the like member engaging through its outer peripheral edge the inner surface of the body of the valve mechanism. In all cases, the two valve members are held both in their closed condition for an intermediate position between the open positions of either valve member. Thus, an annular yielding member fitted coaxially in a rigid member subjected to the action of a spring engages fluidtightly through said yielding member a valve member or a seat for the latter according to the case, whereby said spring urges the rigid member into engagement with the cooperating seat or cooperating valve member respectively.

Inventors

  • 👤 Harald Stampfli

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 18:14
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/048; F16K31/00; F16K31/12; F16K31/126; F16K31/1266; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/86919

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 178 words
A valve mechanism comprising a valve body, a central rod and first and second valve assemblies arranged so that one is in closing position when the other is in open position and inversely; the first valve assembly comprising a valve member fixed on the central rod, and having a seat portion, a rigid ring adapted to engage said seat portion, and a first washer of elastic material engaged at its inner and outer peripheries in circular grooves in said valve body and ring, respectively, permitting axial movement of the ring with respect to the valve body, the second valve assembly comPrising a second rigid ring, an intermediate valve member fixed to the central rod, and a second washer of elastic material engaged at its inner and outer peripheries in circular grooves in said second ring and intermediate valve member, respectively, permitting said second ring to have an axial movement with respect to the central rod, a seat portion on the valve body adapted to be engaged by said second rigid ring, and a spring engaging each rigid ring.
Claim 2
Dependent Claim 178 words
A valve mechanism comprising a valve body, a central rod and first and second valve assemblies arranged so that one is in closing position when the other is in open position and inversely; the first valve assembly comprising a valve member fixed on the central rod, and having a seat portion, a rigid ring adapted to engage said seat portion, and a first washer of elastic material engaged at its inner and outer peripheries in circular grooves in said valve body and ring, respectively, permitting axial movement of the ring with respect to the valve body, the second valve assembly comPrising a second rigid ring, an intermediate valve member fixed to the central rod, and a second washer of elastic material engaged at its inner and outer peripheries in circular grooves in said second ring and intermediate valve member, respectively, permitting said second ring to have an axial movement with respect to the central rod, a seat portion on the valve body adapted to be engaged by said second rigid ring, and a spring engaging each rigid ring.
Claim 3
Dependent Claim 19 words
A valve mechanism as claimed in claim 1, wherein the radial cross section of the rigid ring is U-shaped.
Claim 4
Dependent Claim 28 words
A valve mechanism as claimed in claim 1, wherein the spring engaging each rigid ring urges its respective ring towards the seat portion adapted to be engaged thereby.
Claim 5
Dependent Claim 56 words
A valve mechanism as claimed in claim 1, wherein the control rod is axially shiftable, and the spring engaging each rigid ring urges its respective ring towards the seat portion adapted to be engaged thereby to make it engage the latter during the shifting of said central rod towards the position closing the corresponding valve member.

References Cited (Backward Citations)

DE1121417B Cited
FR1235320A Cited
US3091255A Cited
GB1024758A Cited
US3415284A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-03-07 1975-09-06 1976-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-03-07 1979-09-06 1980-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-03-07 1983-09-06 1984-03-07 $7700.00 Window Closed / Lapsed

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