Elevator door assembly

Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Including barrier mounted at landing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C187S334000, C049S125000, C049S409000, C049S425000

Reexamination Certificate

active

07424935

ABSTRACT:
A door assembly for an elevator having a cab having a cab entry, the elevator having an elevator shaft having upper and lower shaft entries, the assembly incorporating first, second, and third ladder frames having a plurality of roller carrying rungs and bolt and spacer sleeves spanning between the ladder frames' rungs, each ladder frame having proximal and distal ends, the first ladder frame overlying and extending outwardly from the elevator's cab entry, the second ladder frame overlying and extending inwardly from the elevator's upper entry, and the third ladder frame overlying and extending inwardly from the elevator's lower entry; the door assembly incorporating first, second, and third pluralities of rollable trolleys mounted upon the first, second, and third ladder frames' pluralities of roller carrying rungs; and the door assembly incorporating first, second, and third pluralities of door panels, suspending from the first, second, and third pluralities of rollable trolleys.

REFERENCES:
patent: 1685081 (1928-09-01), Brady
patent: 2271998 (1942-02-01), Dunn
patent: 2328326 (1943-08-01), Byrne
patent: 2372648 (1945-04-01), Beskin
patent: 3072394 (1963-01-01), Urquhart
patent: 3425160 (1969-02-01), Petterborg
patent: 3425162 (1969-02-01), Halpern
patent: 3577679 (1971-05-01), Petterborg
patent: 4073034 (1978-02-01), Martens
patent: 4355486 (1982-10-01), Sherwood
patent: 4588049 (1986-05-01), Haas
patent: 5060763 (1991-10-01), Garrido et al.
patent: 5606826 (1997-03-01), Calhoun
patent: 5673770 (1997-10-01), Friedman
patent: 5839543 (1998-11-01), Chiu
patent: 2004/0079592 (2004-04-01), Borneck
patent: 2004/0149522 (2004-08-01), Miller
patent: 2006/0000563 (2006-01-01), Ito
patent: 0236909 (1987-09-01), None
patent: 90870180.8 (1991-04-01), None
patent: 05-289223 (1995-05-01), None
patent: WO2004/050529 (2004-06-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Elevator door assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevator door assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator door assembly will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3966169

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.