US3829063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated platform for hand trucks and the like
Assignee: Individual
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Filing: 1973-03-14
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Granted: 1974-08-13
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Expires: 1993-03-14
Abstract
Abstract A platform primarily intended for installation on a handtruck, can be raised and lowered hydraulically and rotated manually.
Inventors
- 👤 G Holzworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0618; B65; B65G; B65G63/00; B65G63/06; B65G63/062; B65G63/065; B66; B66F; B66F3/00; B66F3/24; B62B2203/00; B62B2203/07; B62B2203/071; B62B2203/10; Y; Y10; Y10S; Y10S254/00; Y10S254/01; Y10S254/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
310 words
An articulated platform for hand trucks and the like, comprising in combination, a vertically upright hydraulic lift, a base below said hydraulic lift for supporting said hydraulic lift there upon, said base being supportable upon a floor of a truck, said hydraulic lift including a cylinder which at its lower end rest upon said base, and a piston upwardly slideable from an upper end of said cylinder, an upper end of said piston having a load carrying bearing means upon which a horizontal stage is supported, said load carrying bearing means providing relative rotation between said stage and said piston, said stage forming a circular top wall of an upper section, said top wall being integral with a cylindrical side wall located there below, a lower end of said cylindrical side wall being integral with a radially outwardly extending flange, said flange, cylindrical side wall and stage together forming said top section, said top section being slideably mounted into an intermediate section so that said flange abuts against an upper end of said intermediate section, said intermediate section comprising a cylindrical side wall which at its upper end includes a radially inwardly extending flange for abutment against an upper side of said upper section flange, and a lower edge of said intermediate section cylindrical side wall being integral with a radially outwardly extending flange, said intermediate section being slideably mounted into a lower section, said lower section including a cylindrical side wall which at its upper end is integral with a radially inwardly extending flange for abutment against an upper side of said intermediate section lower flange, a lower end of said bottom section cylindrical side wall resting upon a horizontal member placed upon a support bearing means, which support bearing means rests upon said base, said support bearing means providing relative rotation between said bottom section and said base.
Claim 2
Dependent Claim
310 words
An articulated platform for hand trucks and the like, comprising in combination, a vertically upright hydraulic lift, a base below said hydraulic lift for supporting said hydraulic lift there upon, said base being supportable upon a floor of a truck, said hydraulic lift including a cylinder which at its lower end rest upon said base, and a piston upwardly slideable from an upper end of said cylinder, an upper end of said piston having a load carrying bearing means upon which a horizontal stage is supported, said load carrying bearing means providing relative rotation between said stage and said piston, said stage forming a circular top wall of an upper section, said top wall being integral with a cylindrical side wall located there below, a lower end of said cylindrical side wall being integral with a radially outwardly extending flange, said flange, cylindrical side wall and stage together forming said top section, said top section being slideably mounted into an intermediate section so that said flange abuts against an upper end of said intermediate section, said intermediate section comprising a cylindrical side wall which at its upper end includes a radially inwardly extending flange for abutment against an upper side of said upper section flange, and a lower edge of said intermediate section cylindrical side wall being integral with a radially outwardly extending flange, said intermediate section being slideably mounted into a lower section, said lower section including a cylindrical side wall which at its upper end is integral with a radially inwardly extending flange for abutment against an upper side of said intermediate section lower flange, a lower end of said bottom section cylindrical side wall resting upon a horizontal member placed upon a support bearing means, which support bearing means rests upon said base, said support bearing means providing relative rotation between said bottom section and said base.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |