US4387736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control apparatus
Assignee: Individual
•
Filing: 1981-10-26
•
Granted: 1983-06-14
•
Expires: 2001-10-26
Abstract
Abstract Fluid control apparatus including inlet and outlet check valve assemblies connected to a mounting block, filter means operatively associated with the check valve assemblies and a pulse damper device positioned on the mounting block for maintaining a continuous pressure on fluid after it has passed through the check valve assemblies.
Inventors
- 👤 Emery Major
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:13
CPC Classifications
F; F04; F04B; F04B11/00; F04B11/0008; F04B11/0033; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7854; Y10T137/7857; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912; Y10T137/794; Y10T137/8122
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
170 words
In fluid control apparatus including mounting means defining a throughbore therein and at least one check valve assembly mounted on said mounting means, said check valve assembly including a valve assembly body portion defining an interior, the improvement comprising: an annular boss comprising a portion of at least one of said mounting means and said valve assembly body portion; a resilient annular valve assembly seal positioned between said mounting means and said valve assembly body portion, said annular valve assembly seal having a central opening, an annular recess formed therein spaced from said central opening for receiving said annular boss and a radially outwardly projecting flange spaced outwardly from said annular recess and positioned between and in engagement with said mounting means and said check valve assembly body portion; and a valve seat supported by said valve assembly seal and positioned within said central opening of said valve assembly seal, said valve seat defining a fluid flow passageway between said mounting means throughbore and said valve assembly body portion interior.
Claim 2
Dependent Claim
170 words
In fluid control apparatus including mounting means defining a throughbore therein and at least one check valve assembly mounted on said mounting means, said check valve assembly including a valve assembly body portion defining an interior, the improvement comprising: an annular boss comprising a portion of at least one of said mounting means and said valve assembly body portion; a resilient annular valve assembly seal positioned between said mounting means and said valve assembly body portion, said annular valve assembly seal having a central opening, an annular recess formed therein spaced from said central opening for receiving said annular boss and a radially outwardly projecting flange spaced outwardly from said annular recess and positioned between and in engagement with said mounting means and said check valve assembly body portion; and a valve seat supported by said valve assembly seal and positioned within said central opening of said valve assembly seal, said valve seat defining a fluid flow passageway between said mounting means throughbore and said valve assembly body portion interior.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 wherein said valve seat extends between and is in engagement with both said mounting means and said check valve assembly body portion.
Claim 4
Dependent Claim
38 words
The apparatus of claim 1 wherein said boss is formed on said check valve assembly body portion at a location radially outwardly of said mounting means throughbore when said check valve assembly is mounted on said mounting means.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 additionally comprising filter means in engagement with said valve seat.
References Cited (Backward Citations)
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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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |