US3108656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting apparatus for electric-line construction or maintenance workers
Assignee: Asplundh Tree Expert LLC
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Filing: 1959-08-12
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Granted: 1963-10-29
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Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 Asplundh Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:30
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04; B66F11/044
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
IN APPARATUS FOR ELEVATING A MAN AND SUPPORTING HIM FROM A POSITION ON THE GROUND IN AN ELEVATED LOCATION FOR WORK ON AND AROUND ELECTRICALLY CHARGED OVERHEAD WIRES, SAID APPARATUS COMPRISING A TRUCK, BOOM SUPPORTING MEANS ON THE TRUCK, SAID BOOM SUPPORTING MEANS BEING ROTATABLE IN A HORIZONTAL PLANE, A BOOM ARTICULATED TO SAID SUPPORTING MEANS FOR VERTICAL SWINGING MOVEMENT, AND A WORKMAN''S PLATFORM ARTICULATED TO THE BOOM AND SUPPORTED FOR VERTICAL SWINGING MOVEMENT UPON A HORIZONTAL PIVOT; THE COMBINATION THEREWITH OF THE IMPROVEMENT FOR REDUCING THE WORKMAN''S HAZARDS WHICH INCLUDES AN EXTENDED LENGTH OF BOOM BEING CONSTRUCTED ENTIRELY OF DIELECTRIC MATERIAL FORMED AS A HOLLOW STRUCTURAL MEMBER ADAPTED TO CARRY THE PLATFORM LOAD AND RESIST THE STRESSES DEVELOPED DURING USE OF THE APPARATUS.
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |