US3685538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control device
Assignee: Individual
•
Filing: 1970-09-21
•
Granted: 1972-08-22
•
Expires: 1990-09-21
Abstract
Abstract A fluid flow control device having a flexible, resilient sleeve forming a flowway through which the fluid whose flow is to be controlled may flow and including mechanism responsive to an increase in the rate of flow of the fluid beyond a predetermined rate for causing the sleeve to close. The device is constructed and arranged so that the operating parts of the sleeve actuating mechanism are enclosed by the sleeve to isolate the same from contact with the flowing fluid.
Inventors
- 👤 Charles E Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012; F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
In a device for controlling the flow of liquid through a flowway, a housing having a tubular body adapted to be positioned in the flowway, a tubular actuator slidably mounted within said body for longitudinal movement relative thereto, a flexible sleeve through which liquid may flow and which extends through said tubular actuator and said body to seal said actuator and body from the flow of liquid therethrough, and, means movably carried by said tubular actuator which apply a radially inwardly directed force to said flexible sleeve to close the liquid flow through said sleeve and which are actuated by the longitudinal movement of said actuator in response to an increase in the rate of flow of liquid through the flowway.
Claim 2
Dependent Claim
121 words
In a device for controlling the flow of liquid through a flowway, a housing having a tubular body adapted to be positioned in the flowway, a tubular actuator slidably mounted within said body for longitudinal movement relative thereto, a flexible sleeve through which liquid may flow and which extends through said tubular actuator and said body to seal said actuator and body from the flow of liquid therethrough, and, means movably carried by said tubular actuator which apply a radially inwardly directed force to said flexible sleeve to close the liquid flow through said sleeve and which are actuated by the longitudinal movement of said actuator in response to an increase in the rate of flow of liquid through the flowway.
Claim 3
Dependent Claim
75 words
The device as claimed in claim 1 wherein said means carried by said tubular actuator includes roller means engageable with the external surface of said flexible sleeve, and said housing is formed with means shaped for engagement with said roller means upon movement of said tubular actuator in one direction to move said roller means radially inwardly to exert a radially directed force on said flexible sleeve to close the liquid flow through said sleeve.
Claim 4
Dependent Claim
50 words
The device as claimed in claim 2 wherein said body is formed with an inwardly opening longitudinally extending groove in which said roller means is rollably movable, said groove tapering inwardly longitudinally to cause said roller means to move radially inwardly upon movement of said actuator in said one direction.
Claim 5
Dependent Claim
23 words
The device as claimed in claim 1 wherein said flexible sleeve is attached to said tubular body at a reduced front end portion.
Claim 6
Dependent Claim
18 words
The device as claimed in claim 1 wherein said housing comprises a tubular body and an inlet guide.
Claim 7
Dependent Claim
26 words
The device as claimed in claim 1 including means positioned for coaction with said actuator and said body to yieldingly resist longitudinal movement of said actuator.
Claim 8
Dependent Claim
33 words
The device as claimed in claim 1 wherein said means carried by said tubular actuator includes plunger means which move longitudinally through bores in said body to cushion the movement of said actuator.
Claim 9
Dependent Claim
37 words
The device as claimed in claim 1 including yieldable means positioned for coaction with said actuator and body to yieldingly urge said actuator to a position where said flexible sleeve is open to the flow of liquid.
Claim 10
Dependent Claim
23 words
The device of claim 7 including yieldable means which coact with said plunger means and are positioned in said bores in said body.
Claim 11
Dependent Claim
26 words
The device of claim 7 including detent means positioned for coaction with said plunger means and said body to yieldingly resist longitudinal movement of said actuator.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |