US4527588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety valve
Assignee: NEWCO HENLEY HOLDINGS Inc A DE CORP
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Filing: 1983-12-14
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Granted: 1985-07-09
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Expires: 2003-12-14
Abstract
Abstract A safety valve in combination with a resilient tube for preventing the free flow of fluid through the resilient tube comprises a valve body which is connected to a valve head of generally circular cross-section which is formed with a flat peripheral land. The resilient tube is disposed over the valve head for snug fluid-sealing engagement between the inner surface of the tube and the flat land on the valve head. Also, the resilient tube is fluid sealed to the valve body for fluid communication therebetween. Stretching the resilient tube separates a portion of the inner surface of the tube from the flat land on the valve head to permit fluid flow past the valve head. When the resilient tube is unstretched, the engagement between the inner surface of the tube and the flat land of the valve head prevents free fluid flow.
Inventors
- 👤 Gus G. Tseo
- 👤 Mark E. Alpen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:29
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; A; A61; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/16831; F16; F16K; F16K7/00; F16K7/02; F16K7/04; A61M39/00; A61M39/22; A61M39/28; A61M39/281; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/85986
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
A safety valve for permitting the flow of fluid through a resilient tube operatively associated with a fluid flow device comprises: a valve body formed with a fluid passageway therethrough having an inlet and an outlet; a valve head formed with a peripheral land and connected to said valve body with the outlet intermediate the inlet and said valve head; a resilient tube attached to said valve body for fluid communication with said outlet and disposed around said valve head for fluid sealing engagement between the inside surface of said tube and the surface of said land on said valve head when said tube is disengaged from the fluid flow device; means for fixedly connecting said valve body relative to the fluid flow device; and means for engaging said tube with the fluid flow device to distort said tube in a direction transverse to the surface of said land to disengage a portion of the inner surface of said tube from said land to permit fluid flow through said tube.
Claim 2
Dependent Claim
170 words
A safety valve for permitting the flow of fluid through a resilient tube operatively associated with a fluid flow device comprises: a valve body formed with a fluid passageway therethrough having an inlet and an outlet; a valve head formed with a peripheral land and connected to said valve body with the outlet intermediate the inlet and said valve head; a resilient tube attached to said valve body for fluid communication with said outlet and disposed around said valve head for fluid sealing engagement between the inside surface of said tube and the surface of said land on said valve head when said tube is disengaged from the fluid flow device; means for fixedly connecting said valve body relative to the fluid flow device; and means for engaging said tube with the fluid flow device to distort said tube in a direction transverse to the surface of said land to disengage a portion of the inner surface of said tube from said land to permit fluid flow through said tube.
Claim 3
Dependent Claim
27 words
A safety valve as cited in claim 1 wherein the fluid flow device is a rotary peristaltic pump operatively associated with said resilient tube and said valve.
Claim 4
Dependent Claim
35 words
A safety valve as cited in claim 1 further comprising a neck rigidly connecting said valve head with said body to form a fluid chamber within said tube between the outlet and said valve head.
Claim 5
Dependent Claim
19 words
A safety valve as cited in claim 1 wherein said valve head is angled relative to said valve body.
Claim 6
Dependent Claim
18 words
A safety valve as cited in claim 3 wherein said neck is angled relative to said valve body.
Claim 7
Dependent Claim
22 words
A safety valve as cited in claim 1 wherein said outlet port defines an opening intersecting a portion of said peripheral land.
Claim 8
Dependent Claim
20 words
A safety valve as cited in claim 1 wherein said outlet port defines an annular undercut in said peripheral land.
Claim 9
Independent Claim
114 words
A method of providing an automatic safety valve in a continuous fluid flow system including a fluid flow device connected to a flexible, resilient tube comprising the steps of: a. inserting a relatively rigid valve in series with said tube to make a fluid tight seal between a portion of said rigid valve and said tube, said rigid valve having a port normally closed by said seal; b. fixedly mounting said valve on the fluid flow device; and c. engaging a portion of the tube external to said valve with the fluid flow device to cause tube distortion effective to break the seal and open said port for operation of the fluid flow device.
Claim 10
Independent Claim
114 words
A method of providing an automatic safety valve in a continuous fluid flow system including a fluid flow device connected to a flexible, resilient tube comprising the steps of: a. inserting a relatively rigid valve in series with said tube to make a fluid tight seal between a portion of said rigid valve and said tube, said rigid valve having a port normally closed by said seal; b. fixedly mounting said valve on the fluid flow device; and c. engaging a portion of the tube external to said valve with the fluid flow device to cause tube distortion effective to break the seal and open said port for operation of the fluid flow device.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |