Patent US3236331A successfully refreshed from Google Patents.
US3236331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work bench, scaffold and lift combination
Assignee: Individual
•
Filing: 1963-05-29
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Granted: 1966-02-22
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Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Green Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:45
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/18; E04G1/20; B; B66; B66B; B66B9/00; B66B9/16; B66F; B66F11/00; B66F11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A SCAFFOLD, COMPRISING IN COMBINATION, FOUR VERTICAL RAIL MEMBERS FORMING FRONT AND REAR TRACKS DEFINING THE ENDS OF A RECTANGULAR FRAME; A PAIR OF HORIZONTALLY DISPOSED LIFTING MEMBERS EACH WITH THE ENDS THEREOF DESIGNED TO MOVE VERTICALLY ALONG THE TRACKS; LONGITUDINAL ROTARY SCREW DRIVE MEANS INCLUDING A LONGITUDINAL SCREW DRIVE SHAFT EXTENDING HORIZONTALLY ALONG THE ONE SIDE OF SAID FRAME, A DRIVE BOSS BEING THREADEDLY MOUNTED THEREON, THE TRAVELING OF SAID DRIVE BOSS BEING ACCOMPLISHED BY TURNING OF SAID SHAFT, TURNING MEANS TO TURN SAID SHAFT AND, A CORD AND PULLEY ARRANGEMENT, THE CORDS OF WHICH ARE COUPLED TO THE ENDS OF THE LIFTING MEMBERS AND TO SAID TRAVELING DRIVE BOSS, SAID CORD AND PULLEY ARRANGEMENT INCLUDING FIRST HORIZONTAL AND VERTICAL LOWER PULLEYS AD-
Claim 2
Dependent Claim
124 words
A SCAFFOLD, COMPRISING IN COMBINATION, FOUR VERTICAL RAIL MEMBERS FORMING FRONT AND REAR TRACKS DEFINING THE ENDS OF A RECTANGULAR FRAME; A PAIR OF HORIZONTALLY DISPOSED LIFTING MEMBERS EACH WITH THE ENDS THEREOF DESIGNED TO MOVE VERTICALLY ALONG THE TRACKS; LONGITUDINAL ROTARY SCREW DRIVE MEANS INCLUDING A LONGITUDINAL SCREW DRIVE SHAFT EXTENDING HORIZONTALLY ALONG THE ONE SIDE OF SAID FRAME, A DRIVE BOSS BEING THREADEDLY MOUNTED THEREON, THE TRAVELING OF SAID DRIVE BOSS BEING ACCOMPLISHED BY TURNING OF SAID SHAFT, TURNING MEANS TO TURN SAID SHAFT AND, A CORD AND PULLEY ARRANGEMENT, THE CORDS OF WHICH ARE COUPLED TO THE ENDS OF THE LIFTING MEMBERS AND TO SAID TRAVELING DRIVE BOSS, SAID CORD AND PULLEY ARRANGEMENT INCLUDING FIRST HORIZONTAL AND VERTICAL LOWER PULLEYS AD-
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |