Patent US3844532A successfully refreshed from Google Patents.
US3844532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat
Assignee: Individual
•
Filing: 1972-06-12
•
Granted: 1974-10-29
•
Expires: 1992-06-12
Abstract
Abstract A generally cylindrically shaped valve seat formed of elastic or resilient material. A flange is formed on one end of the valve seat for sealing engagement with a valve disc when installed in a valve body. The other end of the valve seat may be completely open, partly open, or initially completely closed. In the latter form the initially closed end is cut out and removed after installation of the valve seat in the valve body. A placement tool is used to place or insert the valve seat into the flow passageway bore of the valve body until the flange of the valve seat is seated onto the portion of the valve body surrounding the bore. The valve seat is formed slightly larger in outside diameter than the diameter of the bore. During installation the placement tool is inserted into the valve seat and then used to force the valve seat into the bore. As the valve seat is forced into the bore it lengthens to reduce its outside diameter a sufficient amount to permit the valve seat to be tightly fitted in the bore.
Inventors
- 👤 H Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:51
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/422; F16K1/425; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
A valve seat for placement by means of a placement tool in the flow passageway bore of a valve housing comprising an elastic generally cylindrical member having a bore therein and capable of being elongated, reduced in outside diameter and forced into said bore of said valve housing by said placement tool and having an annular flange at one end thereof for seating on the valve housing surrounding said bore of said valve housing, said cylindrical member having an outside diameter slightly larger than the diameter of said bore of said valve housing before said cylindrical member is elongated and placed in said bore of said valve housing; and means extending into said bore of said cylindrical member for engagement by said placement tool, said cylindrical member tightly fitting the bore of said valve housing following placement therein.
Claim 2
Dependent Claim
138 words
A valve seat for placement by means of a placement tool in the flow passageway bore of a valve housing comprising an elastic generally cylindrical member having a bore therein and capable of being elongated, reduced in outside diameter and forced into said bore of said valve housing by said placement tool and having an annular flange at one end thereof for seating on the valve housing surrounding said bore of said valve housing, said cylindrical member having an outside diameter slightly larger than the diameter of said bore of said valve housing before said cylindrical member is elongated and placed in said bore of said valve housing; and means extending into said bore of said cylindrical member for engagement by said placement tool, said cylindrical member tightly fitting the bore of said valve housing following placement therein.
Claim 3
Dependent Claim
24 words
A valve seat as recited in claim 1 in which the other end of said member is tapered to facilitate entry into said bore.
Claim 4
Dependent Claim
11 words
A valve seat as recited in claim 1 formed of polyurethane.
Claim 5
Dependent Claim
72 words
A valve seat as recited in claim 1 in which said one end of said member is fully open and said means extending into said bore of said cylindrical member closing the other end of said cylindrical member opposite the flanged end thereof prior to installation of said cylindrical member in the bore of said valve housing and openable after insertion of said cylindrical member in said bore of said valve housing.
Claim 6
Dependent Claim
57 words
A valve seat as recited in claim 1 in which said one end of said cylindrical member is fully open and said means extending into said bore of said cylindrical member comprises a strip at the other end of said cylindrical member opposite the flanged end extending diametrally across said other end to form two openings therethrough.
Claim 7
Dependent Claim
56 words
A valve seat as recited in claim 1 in which said one end of said cylindrical member is fully open and said means extending into the bore of said cylindrical member comprises crossed strips at the other end of said cylindrical member opposite the flanged end thereof to form four quadrantal openings in said other end.
Claim 8
Dependent Claim
57 words
A valve seat as recited in claim 1 in which said one end of said cylindrical member is open and said means extending into said bore of said cylindrical member comprises three strips extending from the center of said other end radially to the side of said cylindrical member to form three openings in said other end.
Claim 9
Dependent Claim
136 words
A valve seat for placement in the flow passageway bore of a valve housing comprising an elastic, generally cylindrical member having a bore therein and capable of being elongated and forced into said flow passageway bore and having an annular flange at one end thereof for seating on said valve housing surrounding said flow passageway bore and having means extending into the bore thereof to aid in placing said cylindircal member in said flow passageway bore, said cylindrical member normally having an outside diameter slightly larger than the diameter of said flow passageway bore when said cylindrical member is not elongated to permit the cylindrical member to be tightly fitted in said flow passageway bore following elongation and placement in said flow passageway bore, said cylindrical member having sufficient strength axially and radially to avoid collapse.
Claim 10
Dependent Claim
136 words
A valve seat for placement in the flow passageway bore of a valve housing comprising an elastic, generally cylindrical member having a bore therein and capable of being elongated and forced into said flow passageway bore and having an annular flange at one end thereof for seating on said valve housing surrounding said flow passageway bore and having means extending into the bore thereof to aid in placing said cylindircal member in said flow passageway bore, said cylindrical member normally having an outside diameter slightly larger than the diameter of said flow passageway bore when said cylindrical member is not elongated to permit the cylindrical member to be tightly fitted in said flow passageway bore following elongation and placement in said flow passageway bore, said cylindrical member having sufficient strength axially and radially to avoid collapse.
Claim 11
Dependent Claim
40 words
A valve seat as recited in claim 8 in which said means in the bore of said cylindrical member comprises material extending across the bore of said cylindrIcal member thinnr than the material of the wall of said cylindrical member.
Claim 12
Dependent Claim
70 words
A valve seat as recited in claim 8 in which said means in the bore of said cylindrical member comprises material extending across and completely closing the bore of said cylindrical member prior to installation of said cylindrical member in said flow passageway of said valve housing and removable toopen the bore of said cylindrical member after installation of said cylindrical member in said flow passageway of said valve housing.
Claim 13
Dependent Claim
33 words
A valve seat as recited in claim 8 in which said means in the bore of said cylindrical member comprises a strip of material extending diametrally across the bore of said cylindrical member.
Claim 14
Dependent Claim
43 words
A valve seat as recited in claim 8 in which said means in the bore of said cylindrical member comprises crossed strips of material extending across the bore of said cylindrical member forming four quadrantal openings in the bore of said cylindrical member.
Claim 15
Dependent Claim
49 words
A valve seat as recited in claim 8 in which said means in the bore of said cylindrical member comprises three strips of material extending from the center of the bore radially to the side of said cylindrical member forming three openings in the bore of said cylindrical member.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |