Supports: cabinet structure – Arrangements of plural cabinets – Relatively movable
Patent
1991-01-07
1991-09-03
Falk, Joseph
Supports: cabinet structure
Arrangements of plural cabinets
Relatively movable
A47B 5300
Patent
active
050447033
ABSTRACT:
A limit switch assembly for mounting on mobile storage units has first and second limit switches secured in spaced relationship. A switch operating rod is spring biased to extend from the assembly by a predetermined amount into an open aisle or where there is no proximate storage unit and there is a cam element on the rod which holds the first switch in closed circuit condition to enable a motor on the unit and drive it into the open aisle space and when the rod touches a stop as the unit means reached the limit of its travel the cam shifts to open the first switch to initiate a deceleration interval which terminates when the cam retracts enough to open the second switch which disables the motor. The rod on the limit switch assembly of the next trailing storage unit begins to extend when the leading unit moves a small amount in which case the cam on the trailing unit only needs to move a small amount to close the first limit switch on the trailing unit so it begins to accelerate while the leading unit is still accelerating. The trailing unit and any subsequent trailing units go through the same deceleration and stopping cycle performed by the first unit.
REFERENCES:
patent: 3957322 (1976-05-01), Mastronardi et al.
patent: 4745516 (1988-05-01), Griffin
patent: 4759592 (1988-07-01), Dahnert
patent: 4783618 (1988-11-01), Artrip
Falk Joseph
Spacesaver Corporation
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