Patent US3600949A successfully refreshed from Google Patents.
US3600949A
Expired / Lapsed
US
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Pressure gauge
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1969-06-27
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Granted: 1971-08-24
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Expires: 1989-06-27
Abstract
Abstract In a pressure gauge for extruders a pressure-sensitive and a pressure-insensitive place of the pressure feeler are connected to the input member and to the body of a displacement meter by two identical sets of rods, to make the pressure gauge insensitive to temperature changes.
Inventors
- 👤 Hermann R K Janeschitz-Kriegel
- 👤 Johannes Schijf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:13
CPC Classifications
G; G01; G01L; G01L23/00; G01L23/08; G01L23/18; G01L19/00; G01L19/02; G01L19/04; G01L9/00; G01L9/0041; G01L9/0051; G01L9/006
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A pressure gauge for extruders comprising an oblong case having disposed in one end a pressure feeler elastically deformable by the pressure to be measured and disposed in the opposite end of the case a displacement meter mounted longitudinally movably and having a fixed part and a moveable input member and means connecting the said feeler and said meter for transmitting the deformation of the said feeler to said meter, said connecting means comprising two separate sets of substantially identical connecting elements arranged substantially identically in the case, one of said sets connecting a deformation sensitive part of said pressure feeler with said moveable member and the other set connecting a deformation insensitive part of said pressure feeler with said fixed part of said displacement meter.
Claim 2
Dependent Claim
126 words
A pressure gauge for extruders comprising an oblong case having disposed in one end a pressure feeler elastically deformable by the pressure to be measured and disposed in the opposite end of the case a displacement meter mounted longitudinally movably and having a fixed part and a moveable input member and means connecting the said feeler and said meter for transmitting the deformation of the said feeler to said meter, said connecting means comprising two separate sets of substantially identical connecting elements arranged substantially identically in the case, one of said sets connecting a deformation sensitive part of said pressure feeler with said moveable member and the other set connecting a deformation insensitive part of said pressure feeler with said fixed part of said displacement meter.
Claim 3
Dependent Claim
53 words
Pressure gauge according to claim 1 wherein each of the connecting elements comprises at least two pins on both ends connected by a yoke, and wherein the pins of the one connecting element and the pins of the other connecting element are reciprocally arranged in the same way with respect to each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |