Power door drive and door support having motor operated locks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 30, 1994
Grant Date -
N/A
app pub date -
May 8, 1992
filing date -
May 8, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Rotary locks used on transit vehicle doors when opened and closed by a rotating helical door drive member. In a preferred embodiment, a first lock utilizes a negative thread portion of the helical drive. A second lock utilizes a rotating lock pawl and stop. The drive and lock can be used to operate door systems with and without separate door hangers. Compensation for camber variations in car structure is provided through the use of spherical mounts or drive member journals.
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Family
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