Fire escape – ladder – or scaffold – Platform with elevating or lowering means
Reexamination Certificate
2011-05-17
2011-05-17
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Platform with elevating or lowering means
C182S187000, C182S188000, C187S270000
Reexamination Certificate
active
07942244
ABSTRACT:
The invention relates to a lifting assembly (10, 20, 30, 40, 50, 60, 70, 80, 90) comprising: a rack mast, a platform (12, 23, 33, 43, 53, 91), and at least one power unit (100, 300, 400, 500, 600, 800, 900, 901) which is mounted to the mast and which controls the vertical movement of the platform along the length thereof. The invention is characterized in that the power unit comprises a plurality of modular elements including at least one motor block (101, 200, 201, 301, 401, 501, 604, 621, 801, 904), at least one upper roller box (102, 205, 210, 305, 404, 503, 627, 903) and at least one lower roller box (103, 206, 304, 405, 502, 601, 629, 902). According to the invention, each of the modular elements is equipped with mechanical fastening means (610, 611, 612) which are aligned with the mechanical fastening means of an adjacent modular element.
REFERENCES:
patent: 1505 (1840-03-01), Penfield
patent: 3415343 (1968-12-01), Svensson
patent: 3516512 (1970-06-01), Hugo et al.
patent: 3743247 (1973-07-01), Willke et al.
patent: 3924710 (1975-12-01), Shohet
patent: 4160538 (1979-07-01), Armstrong
patent: 4203576 (1980-05-01), Sutton
patent: 4467889 (1984-08-01), Maubach et al.
patent: 4498556 (1985-02-01), Garton et al.
patent: 4516663 (1985-05-01), D'Alessio et al.
patent: 5579865 (1996-12-01), Butler et al.
patent: 5927440 (1999-07-01), Freeman
patent: 6250426 (2001-06-01), Lombard
patent: 6523647 (2003-02-01), Duplessis
patent: 1 260 480 (2002-11-01), None
patent: 2 671 336 (1992-07-01), None
patent: 2 710 361 (1995-03-01), None
patent: WO 95/16631 (1995-06-01), None
patent: WO 01/05695 (2001-01-01), None
Chin-Shue Alvin C
Patterson Thuente Christensen Pedersen , P.A.
Quinn Colleen M
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