US4073471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shut off valve apparatus
Assignee: Individual
•
Filing: 1976-06-28
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Granted: 1978-02-14
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Expires: 1996-06-28
Abstract
Abstract The present invention concerns a shut-off valve comprising a valve body provided with at least two passage ports and a shut-off member of the passage ports with its operating shaft rotatably carried in the valve body, said shut-off member being connected with the operating shaft by means of an arcuate member, which rests against a staying member on the bottom of the valve body and is elastic, in such manner that the shut-off member may be shifted from one passage port to another by turning the operating shaft, whereby the shut-off member is pressed against the inner surface of the valve body, radially urged by the arcuate member. The valve comprises an adjustable tensioning means, against which the arcuate member is braced and by adjustment of which the pressure of the shut-off member against the inner surface of the valve body is adjustable with change of the curvature of the arcuate member.
Inventors
- 👤 Uuno J. Lehtinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; F16K5/18; F16K5/184; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
Shut-off valve employing a valve body provided with at least two passage ports; a shut-off member cooperating with said passage ports; an operating shaft rotatably disposed in said valve body; said shut-off member being connected to an arcuate spring member braced against a staying member on the bottom of said valve body and connected to the operating shaft at the top whereby said shut-off member being shiftable from one passage port to another by turning said operating shaft; said shut-off member being urged against said valve body inner surface in a radial direction by said arcuate member; said valve being further defined by an adjustable tensioning means concentric with said operating shaft, against which said arcuate member is braced, and by adjustment of which the pressure of said shut-off member against the inner surface of said valve body is adjustable with change of the curvature of said arcuate member.
Claim 2
Dependent Claim
149 words
Shut-off valve employing a valve body provided with at least two passage ports; a shut-off member cooperating with said passage ports; an operating shaft rotatably disposed in said valve body; said shut-off member being connected to an arcuate spring member braced against a staying member on the bottom of said valve body and connected to the operating shaft at the top whereby said shut-off member being shiftable from one passage port to another by turning said operating shaft; said shut-off member being urged against said valve body inner surface in a radial direction by said arcuate member; said valve being further defined by an adjustable tensioning means concentric with said operating shaft, against which said arcuate member is braced, and by adjustment of which the pressure of said shut-off member against the inner surface of said valve body is adjustable with change of the curvature of said arcuate member.
Claim 3
Dependent Claim
45 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a staying member and the staying member is displaceable with reference to the operating shaft in the axial direction of this shaft and securable in desired position with reference to the operating shaft.
Claim 4
Dependent Claim
46 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a screw displaceable with reference to the operating shaft and attached by threads to the bottom of the valve body, against which screw the arcuate member is braced by mediation of the staying member.
Claim 5
Dependent Claim
46 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a cover displaceable with reference to the operating shaft and attached by threads to the bottom of the valve body, against which cover the arcuate member is braced by mediation of the staying member.
Claim 6
Dependent Claim
41 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a staying member attached to the bottom of the valve body by threads and which is displaceable with reference to the operating shaft by the aid of said threads.
Claim 7
Dependent Claim
30 words
Shut-off valve as recited in claim 1, wherein the staying member comprises a conical axle pin concentric with the operating shaft and mounted on the bottom of the valve body.
Claim 8
Dependent Claim
21 words
Shut-off valve as recited in claim 6, comprising a recess formed on the arcuate member pressing itself against the staying member.
Claim 9
Dependent Claim
29 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a screw displaceable with reference to the operating shaft and attached by threads to the operating shaft.
Claim 10
Dependent Claim
55 words
Shut-off valve as recited in claim 1, wherein the tensioning means comprises a flange attached to the valve body by threads and against which the arcuate member is braced by mediation of the operating shaft, and that the operating shaft is axially displaceable with reference to the valve body by the aid of said flange.
Claim 11
Dependent Claim
22 words
Shut-off valve as recited in claim 1, comprising a pointer provided in the tensioning means indicating the tension of the shut-off member.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |