Patent US3742983A successfully refreshed from Google Patents.
US3742983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly having integral body and inlet
Assignee: Robertshaw US Holding Corp
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Filing: 1970-10-30
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Granted: 1973-07-03
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Expires: 1990-10-30
Abstract
Abstract A sheet metal plug valve assembly with a hollow tubular body having a lateral outlet opening and an axial inlet. The valve plug is a hollow member coaxially rotatable within the body between positions where it will block or permit flow through the body. The plug member has side and bottom openings which are aligned with the respective valve body openings in the valve open position. An outlet tube is secured to the body in alignment with the lateral body opening, and there is a seal between the inner end of the outlet tube and the periphery of the plug member. An inlet tube, coaxial with the body is an integral axial extension of the body below the bottom of said plug member. The valve assembly can be made with more than one outlet or more than one inlet.
Inventors
- 👤 R Harter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:07
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A plug valve assembly comprising a one-piece valve body and inlet tube unit constructed from sheet metal and including a hollow tubular body and an inlet tube, said body having a lateral outlet opening and an axial inlet opening, a hollow plug member coaxially rotatable within said body between positions where it blocks or permits flow through said openings, said plug member having side and bottom openings adapted to align with the respective valve body openings in the valve open position, an outlet tube secured to said body in alignment with said lateral opening, means providing an annular seal between the inner end of said outlet tube and the periphery of said plug member, said inlet tube being coaxial with said body and being formed in onepiece with said body as an integral axial extension of said body below the bottom of said plug member.
Claim 2
Dependent Claim
145 words
A plug valve assembly comprising a one-piece valve body and inlet tube unit constructed from sheet metal and including a hollow tubular body and an inlet tube, said body having a lateral outlet opening and an axial inlet opening, a hollow plug member coaxially rotatable within said body between positions where it blocks or permits flow through said openings, said plug member having side and bottom openings adapted to align with the respective valve body openings in the valve open position, an outlet tube secured to said body in alignment with said lateral opening, means providing an annular seal between the inner end of said outlet tube and the periphery of said plug member, said inlet tube being coaxial with said body and being formed in onepiece with said body as an integral axial extension of said body below the bottom of said plug member.
Claim 3
Dependent Claim
71 words
The plug valve assembly defined in claim 1, wherein said plug member is a cylinder of smaller diameter than said body, said body is formed with a reduced diameter region within which the lower end of said plug member is guidingly received, and said inlet tube is further reduced in diameter as compared to said region and integral with a radial shoulder connecting it to the lower end of said region.
Claim 4
Dependent Claim
84 words
The plug valve assembly defined in claim 1, wherein said body is formed with a second lateral outlet opening and said plug member is formed with a second side opening adapted to align with said second lateral body opening in the open position of the valve, a second outlet tube is secured to said body in alignment with said second lateral opening and an annular seal is provided between the inner end of said second outlet tube and the periphery of said plug member.
Claim 5
Dependent Claim
68 words
The plug valve assembly defined in claim 1, wherein said body is formed with a lateral inlet opening, said plug member is formed with a side opening adapted to align with said lateral inlet opening in the open position of the valve, and an inlet tube having an inner end shaped to the contour of said body is secured directly to said body around said lateral inlet opening.
Claim 6
Dependent Claim
41 words
The plug valve assembly defined in claim 4, wherein the inner end of said inlet tube is an integral saddle section of increased diameter terminating in an attachment flange axially shaped with a concave surface conforming to the body surface contour.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |