Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes threaded rider mating with support screw in...
Patent
1994-01-03
1995-04-04
Noland, Kenneth W.
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes threaded rider mating with support screw in...
384 15, 49404, 187233, B66B 1104
Patent
active
054028620
ABSTRACT:
A lift has a member for supporting a material handling tool. The lift has a housing defining an interior and a longitudinally elongated slot orientated in the vertical direction. The housing has a wall encircling the slot. The member extends through the slot in the housing and moves in the longitudinal direction. A flexible closure strip has a length of at least twice the longitudinal length of the slot and is connected to the member at an approximate midpoint of the flexible closure strip and movable with the member. The flexible closure strip is in slideably sealing engagement with the slot. A pair of scroll boxes accumulates and dispenses the flexible closure strip as the member moves in the longitudinal direction. One of the scroll boxes is located in proximity to an upper wall portion of the wall and the other scroll box located in proximity to a lower wall portion of the wall. Each of the scroll boxes has a take-up roll biased by a spring towards an accumulated position and at least one guide bar for guiding the flexible closure strip. The flexible closure strip has a pair of side edges extending longitudinal. The side edges of the flexible closure strip slideably engage an elastomeric seal for sealing the slot.
REFERENCES:
patent: 150658 (1874-05-01), King
patent: 2871933 (1959-02-01), Kreger
patent: 3376019 (1968-04-01), Weiss
patent: 3861444 (1975-01-01), Portwood
patent: 4616885 (1986-10-01), Komiya
Noland Kenneth W.
United Associates Group Inc.
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