US3145795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing apparatus
Assignee: AH Emery Co
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Filing: 1961-06-23
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Granted: 1964-08-25
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Expires: 1981-06-23
Abstract
No abstract record available.
Inventors
- 👤 Malcolm C Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
G; G01; G01G; G01G5/00; G01G5/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A HYDRAULIC WEIGHING CELL, COMPRISING, IN COMBINATION, A BASE HAVING MEANS FORMING A PRESSURE CHAMBER THEREIN, A DIAPHRAGM OVERLYING SAID PRESSURE CHAMBER, A PISTON OVERLYING SAID DIAPHRAGM, A CYLINDER SURROUNDING SAID PISTON, PISTON STABILIZING MEANS SPACING SAID PISTON FROM SAID SAID CYLINDER, A FIRST ANNULAR SHOULDER AROUND SAID PISTON, A DOWNWARDLY BIASED RING ON SAID SHOULDER, MEANS FORMING A GAUGING HOLE IN SAID CYLINDER ADJACENT SAID RING, SAID GAUGING HOLE TERMINATING AT A FLAT GAUGING SURFACE INSIDE SAID CYLINDER, A SECOND ANNULAR SHOULDER AROUND SAID PISTON, AND ANNULAR PROJECTION AROUND THE INTERIOR OF SAID CYLINDER AND OVERLYING SAID SECOND ANNULAR SHOULDER ON SAID PISTON, WHEREBY UPWARD TRAVEL OF SAID PISTON IS LIMITED BY ENGAGEMENT OF SAID SECOND ANNULAR PISTON SHOULDER AND SAID ANNULAR PROJECTION AND FLUID VOLUME IN SAID PRESSURE CHAMBER MAY BE MEASURED THROUGH SAID GAUGING HOLE BETWEEN SAID RING AND SAID GAUGING SURFACE.
Claim 2
Dependent Claim
145 words
A HYDRAULIC WEIGHING CELL, COMPRISING, IN COMBINATION, A BASE HAVING MEANS FORMING A PRESSURE CHAMBER THEREIN, A DIAPHRAGM OVERLYING SAID PRESSURE CHAMBER, A PISTON OVERLYING SAID DIAPHRAGM, A CYLINDER SURROUNDING SAID PISTON, PISTON STABILIZING MEANS SPACING SAID PISTON FROM SAID SAID CYLINDER, A FIRST ANNULAR SHOULDER AROUND SAID PISTON, A DOWNWARDLY BIASED RING ON SAID SHOULDER, MEANS FORMING A GAUGING HOLE IN SAID CYLINDER ADJACENT SAID RING, SAID GAUGING HOLE TERMINATING AT A FLAT GAUGING SURFACE INSIDE SAID CYLINDER, A SECOND ANNULAR SHOULDER AROUND SAID PISTON, AND ANNULAR PROJECTION AROUND THE INTERIOR OF SAID CYLINDER AND OVERLYING SAID SECOND ANNULAR SHOULDER ON SAID PISTON, WHEREBY UPWARD TRAVEL OF SAID PISTON IS LIMITED BY ENGAGEMENT OF SAID SECOND ANNULAR PISTON SHOULDER AND SAID ANNULAR PROJECTION AND FLUID VOLUME IN SAID PRESSURE CHAMBER MAY BE MEASURED THROUGH SAID GAUGING HOLE BETWEEN SAID RING AND SAID GAUGING SURFACE.
References Cited (Backward Citations)
US2960328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |