US3648728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: Dutton Lainson Co
•
Filing: 1970-06-22
•
Granted: 1972-03-14
•
Expires: 1990-06-22
Abstract
Abstract A valve construction for use as a pressure relief or check valve in fluid systems or apparatus.
Inventors
- 👤 Max W Perry
- 👤 Norman D Brockelsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0493; F16K15/00; F16K15/14; F16K15/148; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/7904; Y10T137/7922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
177 words
A two piece valve construction for operative association with and controlling an opening in a mounting member, comprising a unitary valve element of resilient material having a valve head adapted to sealingly engage the outer surface of said member in surrounding relation to said opening, said valve element having a stem attached to the underside of said valve head and extending freely through said opening, said opening being of larger crosssectional areA than said stem to permit fluid under pressure to discharge along the stem and through the opening and pass beneath the valve head, said valve element having shoulder means on the opposite end of the stem having a transverse dimension greater than the size of said opening and adapted to be forcibly projected through said opening in spaced relation to the inner surface of the mounting member and separate means reacting against said shoulder means and the inner surface of said member to yieldingly maintain the valve head seated in sealing engagement with the outer surface of said member in surrounding relation to said opening.
Claim 2
Dependent Claim
177 words
A two piece valve construction for operative association with and controlling an opening in a mounting member, comprising a unitary valve element of resilient material having a valve head adapted to sealingly engage the outer surface of said member in surrounding relation to said opening, said valve element having a stem attached to the underside of said valve head and extending freely through said opening, said opening being of larger crosssectional areA than said stem to permit fluid under pressure to discharge along the stem and through the opening and pass beneath the valve head, said valve element having shoulder means on the opposite end of the stem having a transverse dimension greater than the size of said opening and adapted to be forcibly projected through said opening in spaced relation to the inner surface of the mounting member and separate means reacting against said shoulder means and the inner surface of said member to yieldingly maintain the valve head seated in sealing engagement with the outer surface of said member in surrounding relation to said opening.
Claim 3
Dependent Claim
59 words
A valve construction as set forth in claim 1, wherein said separate means comprises a strap member of resilient material adapted to be bent into hairpin shape with each end apertured for force fitting over said shoulder means onto the stem with one leg engaging said shoulder means and the other leg engaging the inner surface of said member.
Claim 4
Dependent Claim
56 words
A valve construction as set forth in claim 2, wherein the apertures in the strap member are larger in cross-section than the cross section of the stem to permit fluid under pressure to pass through the apertures of the strap, along the stem and through said opening in the member and discharge beneath the valve head.
Claim 5
Dependent Claim
19 words
A valve construction as set forth in claim 3, wherein said strap member is formed of synthetic plastic material.
Claim 6
Dependent Claim
55 words
A valve construction as set forth in claim 4, wherein said shoulder means comprises a plurality of circumferentially spaced apart abutments, the outer surfaces of each abutment being tapered outwardly toward the valve head to permit forcing the abutments through said opening and to facilitate force fitting of the strap member thereover onto said stem.
Claim 7
Dependent Claim
34 words
A valve construction as set forth in claim 1, wherein said unitary valve element is formed of synthetic plastic material and said valve head is undercut to form a relatively thin, flexible, marginal lip.
References Cited (Backward Citations)
FR627605A
Cited
US1827100A
Cited
US2214459A
Cited
DE823377C
Cited
US3134514A
Cited
US3179122A
Cited
US3454182A
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 |