Patent US3130815A successfully refreshed from Google Patents.
US3130815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold type lift
Assignee: Individual
•
Filing: 1961-12-15
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Granted: 1964-04-28
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Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Louis J Zahner
- 👤 Oscar M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:07
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/18; E04G1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A LIFTING DEVICE COMPRISING AN ELONGATED BASE, A PAIR OF ELONGATED SUPPORTS PIVOTALLY SECURED TO OPPOSITE END PORTIONS OF SAID BASE FOR ROTATION ABOUT GENERALLY PARALLEL AXES EXTENDING TRANSVERSELY OF SAID BASE BETWEEN SUBSTANTIALLY VERTICAL UPRIGHT OPERATIVE POSITIONS AND GENERALLY HORIZONTALLY DISPOSED COLLAPSED POSITIONS OVERLYING SAID BASE, A SUPPORT MEMBER SLIDABLY MOUNTED ON EACH OF SAID SUPPORTS FOR GUIDED MOVEMENT LONGITUDINALLY THEREALONG BETWEEN RAISED AND LOWERED POSITIONS WHEN SAID SUPPORTS ARE DISPOSED UPRIGHT AND AGAINST MOVEMENT LATERALLY OF SAID SUPPORTS, EACH OF SAID SUPPORT MEMBERS IN-
Claim 2
Dependent Claim
86 words
A LIFTING DEVICE COMPRISING AN ELONGATED BASE, A PAIR OF ELONGATED SUPPORTS PIVOTALLY SECURED TO OPPOSITE END PORTIONS OF SAID BASE FOR ROTATION ABOUT GENERALLY PARALLEL AXES EXTENDING TRANSVERSELY OF SAID BASE BETWEEN SUBSTANTIALLY VERTICAL UPRIGHT OPERATIVE POSITIONS AND GENERALLY HORIZONTALLY DISPOSED COLLAPSED POSITIONS OVERLYING SAID BASE, A SUPPORT MEMBER SLIDABLY MOUNTED ON EACH OF SAID SUPPORTS FOR GUIDED MOVEMENT LONGITUDINALLY THEREALONG BETWEEN RAISED AND LOWERED POSITIONS WHEN SAID SUPPORTS ARE DISPOSED UPRIGHT AND AGAINST MOVEMENT LATERALLY OF SAID SUPPORTS, EACH OF SAID SUPPORT MEMBERS IN-
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |