Patent US4285500A successfully refreshed from Google Patents.
US4285500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud block for an eccentric rotary valve
Assignee: INTERNATIONAL VALVE Corp A CORP OF IOWA
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Filing: 1979-04-26
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Granted: 1981-08-25
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Expires: 1999-04-26
Abstract
Abstract An eccentric rotary valve housing is provided which can be used in a flangeless construction or a flanged construction. In the flangeless construction, a stud block is recessed to pass around the offset neck portion and is of a size to resist bending and torsion stresses equal to those in the tie bolts. In the flanged construction, a pair of rings are keyed on the housing to cooperate with flanged pipes.
Inventors
- 👤 Henry Illing
- 👤 Chauncey Newkirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:05
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/06; F16L; F16L23/00; F16L23/006; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6031
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
In combination, a housing for an eccentric rotary control valve, said housing having a cylindrical body part disposed on a longitudinal axis and a neck part disposed on an axis extending in radially offset relation from said longitudinal axis of said cylindrical body part; a pair of flanges disposed about opposite ends of said cylindrical body part, each said flange having equi-spaced apertures therein; a plurality of draw bolts extending coaxially of said cylindrical body part and through at least some of said apertures in said flanges to secure said flanges together; a stud block disposed perpendicularly between said flanges in alignment with a pair of coaxial apertures in said flanges, said block being disposed between one of said draw bolts and said neck part and having a recess partially encompassing said neck part; and a pair of cap screws, each cap screw passing through a respective flange aperture into coaxial threaded engagement with said stud block, said cap screws and said draw bolts being disposed at equal spacings about said flanges.
Claim 2
Dependent Claim
172 words
In combination, a housing for an eccentric rotary control valve, said housing having a cylindrical body part disposed on a longitudinal axis and a neck part disposed on an axis extending in radially offset relation from said longitudinal axis of said cylindrical body part; a pair of flanges disposed about opposite ends of said cylindrical body part, each said flange having equi-spaced apertures therein; a plurality of draw bolts extending coaxially of said cylindrical body part and through at least some of said apertures in said flanges to secure said flanges together; a stud block disposed perpendicularly between said flanges in alignment with a pair of coaxial apertures in said flanges, said block being disposed between one of said draw bolts and said neck part and having a recess partially encompassing said neck part; and a pair of cap screws, each cap screw passing through a respective flange aperture into coaxial threaded engagement with said stud block, said cap screws and said draw bolts being disposed at equal spacings about said flanges.
Claim 3
Dependent Claim
17 words
The combination as set forth in claim 1 wherein said flanges are separate from said body part.
Claim 4
Dependent Claim
31 words
The combination as set forth in claim 1 wherein said stud block has a cross-section to take bending and torsion stresses equivalent to the bending and torsion stresses in said bolts.
Claim 5
Dependent Claim
17 words
The combination as set forth in claim 1 wherein said stud block is made of carbon steel.
Claim 6
Dependent Claim
26 words
The combination as set forth in claim 1 wherein said stud block has a generally square cross-sectional shape with three flat sidewalls and one curvilinear sidewall.
Claim 7
Dependent Claim
125 words
In combination, a housing for an eccentric rotary control valve, said housing having a cylindrical body part and a neck part extending in offset relation from said cylindrical body part; a pair of flanges disposed about opposite ends of said cylindrical body part; a plurality of draw bolts extending coaxially of said cylindrical body part and through said flanges to secure said flanges together; a stud block between said flanges, said block having a recess partially encompassing said neck part and a curvilinear surface facing said cylindrical body part; and a pair of cap screws, each cap screw passing through a respective flange into threaded engagement with said stud block, said cap screws and said draw bolts being disposed at equal spacings about said flanges.
Claim 8
Dependent Claim
125 words
In combination, a housing for an eccentric rotary control valve, said housing having a cylindrical body part and a neck part extending in offset relation from said cylindrical body part; a pair of flanges disposed about opposite ends of said cylindrical body part; a plurality of draw bolts extending coaxially of said cylindrical body part and through said flanges to secure said flanges together; a stud block between said flanges, said block having a recess partially encompassing said neck part and a curvilinear surface facing said cylindrical body part; and a pair of cap screws, each cap screw passing through a respective flange into threaded engagement with said stud block, said cap screws and said draw bolts being disposed at equal spacings about said flanges.
Claim 9
Dependent Claim
31 words
The combination as set forth in claim 6 wherein said stud block has a cross-section to take bending and torsion stresses equivalent to the bending and torsion stresses in said bolts.
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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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |