US3267878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing mechanism for drafting tables
Assignee: NORMAN WADE CO Ltd
•
Filing: 1964-08-06
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Granted: 1966-08-23
•
Expires: 1984-08-06
Abstract
No abstract record available.
Inventors
- 👤 Faux Alfred William
- 👤 Helland Russell Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:25
CPC Classifications
A; A47; A47B; A47B27/00; A47B27/04; A47B27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A BALANCING MECHANISM FOR AN ADJUSTABLE TABLE MOUNTING MEANS, THE COMBINATION OF A FIXED NON-ROTATABLE STATIONARY MEMBER, AN ARM HAVING ONE END PIVOTALLY MOUNTED ON THE MEMBER FOR PIVOTAL SWINGING MOVEMENT THEREON AND A TABLE SUPPORT MEMBER ROTATABLY MOUNTED ON THE OTHER END OF SAID ARM, SAID TABLE SUPPORT MEMBER BEING PARALLEL TO THE STATIONARY MEMBER SAID SUPPORT MEMBER HAVING A RADIALLY EXTENDING TABLE MOUNTING MEANS AT EACH END THEREOF PROVIDING A ROTATABLE MOUNTING MEANS FOR A TABLE AND INTERDEPENDENT, INTERACTING AND MUTUALLY COMPENSATING COUNTER-BALANCING MEANS COMPRISING A LIFT SPRING SYSTEM ARRANGED AND OPERATIVELY CONNECTED TO THE STATIONARY MEMBER AND TO THE SAID ARM, THE LIFT SPRING SYSTEM HAVING A MAXIMUM AND MINIMUN VALUE OBTAINED FROM THE DIFFERENTIAL EQUATION
Claim 2
Dependent Claim
120 words
IN A BALANCING MECHANISM FOR AN ADJUSTABLE TABLE MOUNTING MEANS, THE COMBINATION OF A FIXED NON-ROTATABLE STATIONARY MEMBER, AN ARM HAVING ONE END PIVOTALLY MOUNTED ON THE MEMBER FOR PIVOTAL SWINGING MOVEMENT THEREON AND A TABLE SUPPORT MEMBER ROTATABLY MOUNTED ON THE OTHER END OF SAID ARM, SAID TABLE SUPPORT MEMBER BEING PARALLEL TO THE STATIONARY MEMBER SAID SUPPORT MEMBER HAVING A RADIALLY EXTENDING TABLE MOUNTING MEANS AT EACH END THEREOF PROVIDING A ROTATABLE MOUNTING MEANS FOR A TABLE AND INTERDEPENDENT, INTERACTING AND MUTUALLY COMPENSATING COUNTER-BALANCING MEANS COMPRISING A LIFT SPRING SYSTEM ARRANGED AND OPERATIVELY CONNECTED TO THE STATIONARY MEMBER AND TO THE SAID ARM, THE LIFT SPRING SYSTEM HAVING A MAXIMUM AND MINIMUN VALUE OBTAINED FROM THE DIFFERENTIAL EQUATION
References Cited (Backward Citations)
US1956546A
Cited
US2988843A
Cited
US3089275A
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FR1271094A
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US3078613A
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US3131654A
Cited
US3161159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |