US3074496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing scale
Assignee: Toledo Scale Corp
•
Filing: 1957-12-30
•
Granted: 1963-01-22
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lawrence S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:09
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROJECTED WEIGHING SCALE COMPRISING, IN COMBINATION, WEIGHING MECHANISM, AN INDICIA-BEARING CHART MOVABLE IN AN ARCUATE PATH WITH THE WEIGHING MECHANISM, A SCREEN, AN OPTICAL SYSTEM INCLUDING A PROJECTION LENS FOR PROJECTING IMAGES OF THE CHART INDICIA ONTO THE SCREEN, MEANS CARRYING THE PROJECTION LENS MOVABLE WITH THE WEIGHING MECHANISM FOR MAINTAINING AN APPROXIMATELY CONSTANT DISTANCE BETWEEN THE CHART AND THE PROJECTION LENS TO KEEP THE OPTICAL SYSTEM IN FOCUS, A LEAF SPRING CONNECTED TO SAID MEANS APPLYING FORCE OPPOSING MOVEMENT OF SAID MEANS, AND ADJUSTMENT MEANS OPERATIVELY CONNECTED TO THE SPRING FOR VARYING THE MAGNITUDE OF SAID FORCE TO ADJUST THE SENSITIVITY OF THE SCALE AT ITS ONE-QUARTER AND THREE-QUARTER CAPACITY POSITIONS.
Claim 2
Dependent Claim
113 words
A PROJECTED WEIGHING SCALE COMPRISING, IN COMBINATION, WEIGHING MECHANISM, AN INDICIA-BEARING CHART MOVABLE IN AN ARCUATE PATH WITH THE WEIGHING MECHANISM, A SCREEN, AN OPTICAL SYSTEM INCLUDING A PROJECTION LENS FOR PROJECTING IMAGES OF THE CHART INDICIA ONTO THE SCREEN, MEANS CARRYING THE PROJECTION LENS MOVABLE WITH THE WEIGHING MECHANISM FOR MAINTAINING AN APPROXIMATELY CONSTANT DISTANCE BETWEEN THE CHART AND THE PROJECTION LENS TO KEEP THE OPTICAL SYSTEM IN FOCUS, A LEAF SPRING CONNECTED TO SAID MEANS APPLYING FORCE OPPOSING MOVEMENT OF SAID MEANS, AND ADJUSTMENT MEANS OPERATIVELY CONNECTED TO THE SPRING FOR VARYING THE MAGNITUDE OF SAID FORCE TO ADJUST THE SENSITIVITY OF THE SCALE AT ITS ONE-QUARTER AND THREE-QUARTER CAPACITY POSITIONS.
References Cited (Backward Citations)
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US1856411A
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US2098846A
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US2244621A
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US2592795A
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US2849223A
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |