US5136852B1
Expired / Lapsed
US
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Control regulator and delivery system for a cryogenic vessel
Assignee: Minnesota Valley Engineering Inc
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Filing: 1991-04-10
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Granted: 1994-05-31
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Expires: 2011-04-10
Abstract
Abstract The regulator (31) of the invention includes a pressure builder inlet (D3), economizer outlet (75) and a pressure builder outlet/economizer inlet (79). A valve (77) is moved in response to the pressure of the gas head (34) in the tank to connect the pressure builder outlet/economizer inlet with either the pressure builder inlet or economizer outlet. As a result, the single dual-function regulator (31) of the invention allows gas to be delivered from either the gas head (34) or the liquid body as determined by the pressure of the gas head. A manual pressure build up valve (99) is provided to allow isolation of the pressure build up system. <IMAGE> <IMAGE>
Inventors
- 👤 Timothy A Neeser
- 👤 Peter L Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:17
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C13/025; F17C9/00; F17C9/02; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0338; F17C2205/0382; F17C2205/0385; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/014; F17C2221/016; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2223/04; F17C2223/042; F17C2223/043; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2225/04; F17C2225/042; F17C2225/046; F17C2225/047; F17C2270/00; F17C2270/02; F17C2270/05
Claims Analysis
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References Cited (Backward Citations)
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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) | 1997-05-30 | 1997-11-29 | 1998-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-30 | 2001-11-29 | 2002-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-30 | 2005-11-29 | 2006-05-31 | $7700.00 | Window Closed / Lapsed |