Patent US3178937A successfully refreshed from Google Patents.
US3178937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensator for hydraulic pressure devices
Assignee: AH Emery Co
•
Filing: 1963-07-10
•
Granted: 1965-04-20
•
Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Chester D Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/02; G01L1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A HYDRAULIC LOAD CELL COMPRISING, IN COMBINATION: (A) A BASE HAVING (1) MEANS FORMING A CAVITY THEREIN, (2) MEANS FORMING A DEPRESSION IN SAID CAVITY, AND (3) MEANS FORMING A FLUID PASSAGE THROUGH SAID BASE FROM SAID CAVITY AND THEN TO A PRESSURE SENSITIVE DEVICE; (B) A DIAPHRAGM OVERLYING SAID CAVITY, (1) MEANS FOR SEALING SAID DIAPHRAGM AROUND THE PERIPHERY OF SAID CAVITY TO FORM A FLUID CHAMBER; (C) A FLUID CONFINED IN SAID CHAMBER; (D) MEANS FOR TRANSMITTING A WEIGHT OR FORCE TO SAID DIAPHRAGM TO AFFECT THE PRESSURE OF FLUID IN SAID CHAMBER; AND
Claim 2
Dependent Claim
96 words
A HYDRAULIC LOAD CELL COMPRISING, IN COMBINATION: (A) A BASE HAVING (1) MEANS FORMING A CAVITY THEREIN, (2) MEANS FORMING A DEPRESSION IN SAID CAVITY, AND (3) MEANS FORMING A FLUID PASSAGE THROUGH SAID BASE FROM SAID CAVITY AND THEN TO A PRESSURE SENSITIVE DEVICE; (B) A DIAPHRAGM OVERLYING SAID CAVITY, (1) MEANS FOR SEALING SAID DIAPHRAGM AROUND THE PERIPHERY OF SAID CAVITY TO FORM A FLUID CHAMBER; (C) A FLUID CONFINED IN SAID CHAMBER; (D) MEANS FOR TRANSMITTING A WEIGHT OR FORCE TO SAID DIAPHRAGM TO AFFECT THE PRESSURE OF FLUID IN SAID CHAMBER; AND
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |