Patent US3737145A successfully refreshed from Google Patents.
US3737145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricated valve ball
Assignee: Walworth Co
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Filing: 1971-08-02
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Granted: 1973-06-05
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Expires: 1991-08-02
Abstract
Abstract A fabricated valve ball comprising a pair of hemispherical shell members and an inner, rigid annular reinforcing beam, with the circular edges of the shell members disposed around it and spaced axially from each other. A thick weldment deposited around the reinforcing beam unifies it with the circular edges. The shell members are truncated at diametrically opposite sides by annular cuts extending axially into the beam, whereby diametrically opposed portions thereof protrude as trunnion cores. Cylindrical caps are welded to the trunnion cores to function as trunnions which are integral with the annular beam.
Inventors
- 👤 K Heller
- 👤 H Ray
- 👤 D Martens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:31
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/06; F16K27/067; F16K27/10; F16K27/107
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
161 words
A fabricated valve ball for relatively high pressure service comprising: a generally spherical relatively thick shell with opposing, generally circular openings, said shell being formed by a pair of generally hemispherical shell components, an internal shoulder in each of said shell components adjacent the annular edges thereof, said internal shoulders engaging the sides of said annular reinforcing beam with said annular edges spaced apart whereby the outer surface of said beam and said annular edges form an annular mold receptacle, a weldment on and around said beam substantially filling said receptacle to unite said annular edges and said beam, a pair of opposing trunnion members on said shell with the axis thereof normal to the axis of said circular openings, a massive annular rigid reinforcing beam welded in said shell coaxial with said circular openings and interconnecting said trunnion members, a cylindrical liner welded at its ends around said circular openings, and at least one pressure equalizing opening through said liner.
Claim 2
Dependent Claim
161 words
A fabricated valve ball for relatively high pressure service comprising: a generally spherical relatively thick shell with opposing, generally circular openings, said shell being formed by a pair of generally hemispherical shell components, an internal shoulder in each of said shell components adjacent the annular edges thereof, said internal shoulders engaging the sides of said annular reinforcing beam with said annular edges spaced apart whereby the outer surface of said beam and said annular edges form an annular mold receptacle, a weldment on and around said beam substantially filling said receptacle to unite said annular edges and said beam, a pair of opposing trunnion members on said shell with the axis thereof normal to the axis of said circular openings, a massive annular rigid reinforcing beam welded in said shell coaxial with said circular openings and interconnecting said trunnion members, a cylindrical liner welded at its ends around said circular openings, and at least one pressure equalizing opening through said liner.
Claim 3
Dependent Claim
33 words
The fabricated valve ball defined by claim 1 wherein: said shell is truncated at opposing sides and portions of said beam protrude beyond the truncated portions as integral parts of said trunnion members.
Claim 4
Dependent Claim
26 words
The fabricated valve ball defined by claim 2 including: trunnion support beams welded transversely to said reinforcing beam and to said shell across said truncated portions.
Claim 5
Dependent Claim
25 words
The fabricated ball defined by claim 2 wherein: said trunnion members are formed by cylindrical caps welded to said protruding portions of the reinforcing beam.
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |