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US 4,552,392 AGranted
Hold open device
AssigneeCaterpillar Tractor Co.
InventorMichael E. Morello
Life of this patent
Estimating the term…
Abstract
An apparatus for selectively holding a door of a vehicle in a plurality of discrete positions. The apparatus includes a rod reciprocatably disposed within a body fixedly attached to the door. The rod is insertable into a plurality of openings within a bracket fixedly attached to the cab of the vehicle.
Claims6
An apparatus connectable to a pivotally movable partition for selectively locking the partition in an open position, said partition being pivotally connected to a foundation member, the apparatus comprising:
- a body having first and second intersecting passages and being connectable to said partition;
- a rod reciprocatably disposed in said first passage and movable between a first, unlocked position and a second, locked position, said rod having a diameter and a recess extending radially into said rod, said recess being alignable with said second passage at the second position of said rod;
- a bracket having a mounting element joinable to the foundation member, an engagement plate, and a resilient member disposed between said mounting element and said engagement plate, said engagement plate and said resilient member each having a first opening at least as large as and smaller than said diameter of said rod, respectively, said openings being generally coaxially arranged for reception of one end of said rod at the second position of said rod, said mounting element and said engagement plate being fixed one relative to the other;
- first biasing means for urging said rod in a direction toward said first position;
- a lever pivotally connected to said body and having an engagement portion insertable into said recess through said second passage;
- and
- second biasing means for urging said engagement portion of said lever into said recess.
4 more elements
A cab for a heavy equipment vehicle having a door pivotally connected to said cab and an apparatus for selectively locking said door in an open position, said apparatus comprising:
- a body having first, second, and third passages and a flange portion, said first passage intersecting said second and third passages, and said body being connected to said door;
- a rod having an annular groove and a keyway extending radially along said rod, said rod being reciprocatably disposed in said first passage and movable between a first unlocked position and a second locked position, said rod having a diameter and a recess extending radially into said rod, said recess being alignable with said second passage at the second position of said rod, said keyway being generally aligned with said third passage;
- a bracket having a mounting element connected to the cab, an engagement plate, and a resilient member disposed between said mounting element and said engagement plate, said engagement plate and said resilient member each having an opening at least as large as and smaller than said diameter of said rod, said mounting element and said engagement plate being fixed one relative to the other, respectively, said openings being generally coaxially arranged for reception of one end of said rod at the second position of said rod;
- a ring disposed within said annular groove of said rod and extending beyond the diameter of said rod;
- a coil spring having first and second end portions and being disposed about said rods, said first and second end portions being in contact with said ring and said door, respectively, said coil spring being axially compressible in response to movement of said rod in a direction from said first position toward said second position;
- a key connected to said body and extending through said third passage into said keyway;
- a lever pivotally connected to said flange of said body by a pin, said lever having an engagement portion insertable into said recess through said second passage;
- and
- a torsion spring disposed about said pin and extending in a direction from said pin opposite said engagement portion and into contact with said lever.
6 more elements
Dependencies are inferred from the claim text.