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US3718314A Expired / Lapsed US ⏱️ 0.0 years remaining

Gate valve and method of making the same

Assignee: Individual
•
Filing: 1970-09-24
•
Granted: 1973-02-27
•
Expires: 1990-09-24
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Abstract

Abstract A gate valve body is formed from a U-shaped member wherein each leg and the bottom connecting portion of the U-shaped member have a substantially U-shaped cross-section. The arms of the U-shaped cross-section of each leg face each other. A filler plate having a concave bottom surface is extended across the front face of the U-shaped member downwardly from the free end of each leg and welded to a facing arm of each leg. A second similar filler plate is extended across the rear face of the U-shaped member and similarly welded. An attaching plate having a cut-out center portion is welded to the free ends of the legs of the U-shaped member and to the top surfaces of the filler plates. The bonnet portion of the valve is formed from a second U-shaped member wherein each leg and the upper connecting portion of the U-shaped member have a substantially U-shaped cross-section. The arms of the U-shaped cross-section of each leg face each other. A semi-circular filler plate is positioned across the front face of the member to fill the opening between the legs and is welded to a facing arm of each leg. A similar filler plate is welded similarly to the rear face of the member. A second attaching plate having a cut-out inner portion is welded to the free ends of the legs of the U-shaped member and to the bottom surfaces of the filler plates. A hole is provided in the center of the connecting portion of the U-shaped member.

Inventors

  • 👤 A Eikevik

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 03:58
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/10; F16K27/105

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 202 words
A gate valve body formed of a weld-free substantially Ushaped member having two legs and a connecting member joining the two legs, each leg and the connecting member having a substantially semi-circular cross-section, the ends of the crosssections of each leg facing each other, a flat filler plate having a concave bottom surface extending across the front face of the Substantially U-shaped member from the edge of one leg to the edge of the opposite leg, the filler plate being welded to the facing ends of each leg, a second flat filler plate having a concave bottom surface extending across the rear face of the substantially U-shaped member from the edge of one leg to the edge of the opposite leg, the filler plate being welded to the facing ends of each leg, the arcuate lower portion of the filler plates and the connecting member forming an opening on the front face and an opening on the rear face, each opening adapted to receive a conduit, a pipe section welded in both the front and rear openings, the end of each pipe section being cut at an angle, the cut ends being converging seats adapted to receive a wedge shaped valve member.
Claim 2
Dependent Claim 202 words
A gate valve body formed of a weld-free substantially Ushaped member having two legs and a connecting member joining the two legs, each leg and the connecting member having a substantially semi-circular cross-section, the ends of the crosssections of each leg facing each other, a flat filler plate having a concave bottom surface extending across the front face of the Substantially U-shaped member from the edge of one leg to the edge of the opposite leg, the filler plate being welded to the facing ends of each leg, a second flat filler plate having a concave bottom surface extending across the rear face of the substantially U-shaped member from the edge of one leg to the edge of the opposite leg, the filler plate being welded to the facing ends of each leg, the arcuate lower portion of the filler plates and the connecting member forming an opening on the front face and an opening on the rear face, each opening adapted to receive a conduit, a pipe section welded in both the front and rear openings, the end of each pipe section being cut at an angle, the cut ends being converging seats adapted to receive a wedge shaped valve member.
Claim 3
Dependent Claim 39 words
A gate valve having a body according to claim 1, an attaching plate having a cut-out center portion welded to the free ends of the legs of the U-shaped member and to the top surfaces of the filler plates.
Claim 4
Dependent Claim 112 words
A gate valve having a body according to claim 1 and a bonnet formed of a second substantially U-shaped member, each leg and the upper connecting portion of the second U-shaped member having a substantially semi-circular cross-section, the ends of the cross-sections of each leg facing each other, a filler plate extending across the front face of the second member and filling the arcuate opening circumscribed by the legs and the upper connecting portion of the second U-shaped member, and a second filler plate extending across the rear face of the second member and filling the arcuate opening circumscribed by the legs and the upper connecting portion of the second U-shaped member.

References Cited (Backward Citations)

US1370224A Cited
FR846760A Cited
FR1271227A Cited
US3353786A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-27 1976-08-28 1977-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-27 1980-08-28 1981-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-27 1984-08-28 1985-02-27 $7700.00 Window Closed / Lapsed

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