Patent US3648722A successfully refreshed from Google Patents.
US3648722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure oriented for foolproof uni-directional installation
Assignee: Studebaker Worthington Inc
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Filing: 1970-03-06
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Granted: 1972-03-14
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Expires: 1990-03-06
Abstract
Abstract A uni-directional valve body and seat structures for receiving such body in such manner that proper directional orientation of the valve with respect to the seat structure is assured. The valve body has two axially adjacent medial cylindrical portions of different diameters. The larger of the medial cylindrical portions has an adjacent end portion of reduced diameter and the smaller of the medial cylindrical portions has an end portion of reduced diameter which is greater than the reduced diameter of the larger of the medial portions. The apparatus in which the valve body is assembled has internal cylindrical seat means having a larger entry diameter and a smaller coaxial diameter opening extending inwardly therefrom. The larger and smaller diameters in the apparatus match the diameters at either end of the valve body, depending upon the desired direction of orientation of the valve. Due to the diametral relationships of the valve body and the seat portions the wrong end of the valve body cannot be inserted into a given cylindrical seat formation.
Inventors
- 👤 John N Story
- 👤 Thomas E Mayer
- 👤 George Yokota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:11
CPC Classifications
F; F16; F16K; F16K51/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7559
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A uni-directional valve body having a pair of stepped end to end generally cylindrical portions and adapted to pass fluid therethrough in one generally axial direction and close against fluid flow in the opposite direction, the outside diameter of one of said portions being greater than the outside diameter of the other, said valve body having cylindrical end portions of reduced diameter with respect to said outside diameter portions, the diameter of the end portion adjacent to said larger outside diameter cylindrical portion being less than the diameter of the end portion adjacent to said smaller outside diameter cylindrical portion.
Claim 2
Dependent Claim
100 words
A uni-directional valve body having a pair of stepped end to end generally cylindrical portions and adapted to pass fluid therethrough in one generally axial direction and close against fluid flow in the opposite direction, the outside diameter of one of said portions being greater than the outside diameter of the other, said valve body having cylindrical end portions of reduced diameter with respect to said outside diameter portions, the diameter of the end portion adjacent to said larger outside diameter cylindrical portion being less than the diameter of the end portion adjacent to said smaller outside diameter cylindrical portion.
Claim 3
Dependent Claim
90 words
The valve body of claim 1 in combination with apparatus having inlet and discharge passages, each having larger diameter entry portions and smaller diameter portions axially inwardly of said entry portions, one of said passages having an entry portion and a smaller diameter portion of a size to receive the outside and reduced diameters of one of said portions of said valve body and the other of said passages having entry and small diameter portions to receive the outside and reduced diameters of the other of said valve body portions.
Claim 4
Dependent Claim
31 words
A valve body according to claim 1 wherein the difference between the two outside diameters and the difference between the two reduced diameters is of the general order of 0.035 inches.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 2 wherein the difference between the two outside diameters and the difference between the two reduced diameters is of the general order of 0.035 inches.
Claim 6
Dependent Claim
33 words
A valve body according to claim 1 wherein the juncture of each outside diameter of said valve body with its associated reduced diameter end portion provides a ledge for receiving an annular gasket.
Claim 7
Dependent Claim
90 words
The valve body of claim 5 in combination with apparatus having inlet and discharge passages, each having larger diameter entry portions and smaller diameter portions axially inwardly of said entry portions, one of said passages having an entry portion and a smaller diameter portion of a size to receive the outside and reduced diameters of one of said portions of said valve body and the other of said passages having entry and small diameter portions to receive the outside and reduced diameters of the other of said valve body portions.
Claim 8
Dependent Claim
53 words
Apparatus according to claim 6 including means for retaining said valve body selectively in either of said passages with the ledge portion thereof directed toward the corresponding ledge portion formed at the juncture of the entry portion and smaller diameter portion of said passage, and an annular gasket disposed between said opposed ledges.
Claim 9
Dependent Claim
38 words
A valve body according to claim 1 wherein the differences between the two outside diameters thereof and the two reduced diameters thereof are sufficiently small to permit the same annular gasket to be interchangeably disposed against either ledge.
Claim 10
Dependent Claim
55 words
ApparatuS according to claim 4 including an annular gasket adapted to be disposed against the juncture of the larger diameter entry portion and the smaller diameter portion of either of said passages, with the corresponding portion of said valve body seating against said gasket, and means for retaining said valve body axially against said gasket.
References Cited (Backward Citations)
US2092088A
Cited
US3493270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |