US3918674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutoff device
Assignee: Luwa Ltd
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Filing: 1974-06-24
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Granted: 1975-11-11
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Expires: 1994-06-24
Abstract
Abstract A shutoff or closure device incorporating a housing possessing an inlet opening and an outlet opening and an elastic hose body arranged therein, the ends of the hose body are fixed at the housing. The hose body further has a throughpassage which can be closed and which intercommunicates the inlet opening with the outlet opening and a substantially ring-shaped pressure compartment is bounded between the housing inner wall and the hose body into which opens a conduit connection provided at the housing. A core portion extends approximately coaxially within the throughpassage and forms at its periphery a seating surface for the hose body. A nozzle directed towards the outlet opening is arranged within the throughpassage, this nozzle being operatively connected with a further conduit connection provided at the housing.
Inventors
- 👤 Hanspeter Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:00
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; F16K31/00; F16K31/12; F16K31/36; F16K31/365
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A shutoff device comprising a housing having an inlet opening and an outlet opening, an elastic hose body having opposed ends and arranged within said housing, means for securing the opposed ends of said hose body at said housing, said hose body forming a closable throughpassage which flow communicates the inlet opening with the outlet opening of the housing, said housing having an inner wall, said hose body being arranged within said housing such that there is formed a substantially ring-shaped pressure compartment between the housing inner wall and the hose body, a conduit connection provided at the housing and opening into said ring-shaped pressure compartment, a core portion extending approximately coaxially within the throughpassage, said core portion forming at its periphery a seating surface for the hose body, a nozzle provided in said core portion and directed towards the outlet opening, said nozzle being provided at an end of the core portion which confronts the outlet opening, a further conduit connection provided at the housing, said nozzle being operatively connected with said furTher conduit connection.
Claim 2
Dependent Claim
176 words
A shutoff device comprising a housing having an inlet opening and an outlet opening, an elastic hose body having opposed ends and arranged within said housing, means for securing the opposed ends of said hose body at said housing, said hose body forming a closable throughpassage which flow communicates the inlet opening with the outlet opening of the housing, said housing having an inner wall, said hose body being arranged within said housing such that there is formed a substantially ring-shaped pressure compartment between the housing inner wall and the hose body, a conduit connection provided at the housing and opening into said ring-shaped pressure compartment, a core portion extending approximately coaxially within the throughpassage, said core portion forming at its periphery a seating surface for the hose body, a nozzle provided in said core portion and directed towards the outlet opening, said nozzle being provided at an end of the core portion which confronts the outlet opening, a further conduit connection provided at the housing, said nozzle being operatively connected with said furTher conduit connection.
Claim 3
Dependent Claim
74 words
The shutoff device as defined in claim 1, wherein said housing comprises a substantially tubular-shaped housing construction composed of an intermediate housing portion and two end housing portions, and wherein said securing means includes structure for clamping one end of the hose body between one of the end housing portions and the intermediate housing portion and the other end of the hose body between the other end housing portion and the intermediate housing portion.
Claim 4
Dependent Claim
175 words
A shutoff device comprising a housing having an inlet opening and an outlet opening, an elastic hose body having opposed ends and arranged within said housing, means for securing the opposed ends of said hose body at said housing, said hose body forming a closable throughpassage which flow communicates the inlet opening with the outlet opening of the housing, said housing having an inner wall, said hose body being arranged within said housing such that there is formed a substantially ring-shaped pressure compartment between the housing inner wall and the hose body, a conduit connection provided at the housing and opening into said ring-shaped pressure compartment, a core portion extending approximately coaxially within the throughpassage, said core portion forming at its periphery a seating surface for the hose body, a nozzle directed towards the outlet opening and arranged in the throughpassage, a further conduit connection provided at the housing, said nozzle being operatively connected with said further conduit connection, and an arm for resiliently supporting in a cantilever manner the core portion at the housing.
Claim 5
Dependent Claim
175 words
A shutoff device comprising a housing having an inlet opening and an outlet opening, an elastic hose body having opposed ends and arranged within said housing, means for securing the opposed ends of said hose body at said housing, said hose body forming a closable throughpassage which flow communicates the inlet opening with the outlet opening of the housing, said housing having an inner wall, said hose body being arranged within said housing such that there is formed a substantially ring-shaped pressure compartment between the housing inner wall and the hose body, a conduit connection provided at the housing and opening into said ring-shaped pressure compartment, a core portion extending approximately coaxially within the throughpassage, said core portion forming at its periphery a seating surface for the hose body, a nozzle directed towards the outlet opening and arranged in the throughpassage, a further conduit connection provided at the housing, said nozzle being operatively connected with said further conduit connection, and an arm for resiliently supporting in a cantilever manner the core portion at the housing.
Claim 6
Dependent Claim
40 words
The shutoff device as defined in claim 3, wherein said arm comprises a tubular element, the core portion having a vent channel, and the nozzle being connected via the vent channel of the core portion with said further conduit connection.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |