Maintenance lip lock
AssigneeKelley Company, Inc.
InventorRobert C. Bedford
Life of this patent
Estimating the term…
Abstract
An improved maintenance assembly for a dockboard having a ramp and a hinged lip. The maintenance assembly includes a lip locking member which is slidably contained in a bracket attached to the bottom of the ramp. A spring connected to the lip locking member urges the locking member into its stored position. When the lip locking member is extended to engage the bottom of the lip and hold it in an elevated position, the lip locking member engages the lip hinge and pivots slightly to bring a detent into engagement with the bracket and thus lock the lip locking member in its operative position.
Claims10
A maintenance assembly for a dockboard having a ramp and a lip hinged to the forward edge of the ramp and movable between a pendant position and an extended position, comprising a lip supporting member for holding the lip in the extended position;
- mounting means for supporting said lip supporting member in movement beneath the ramp from a stored position wherein said lip supporting member is disposed beneath the ramp to an operative position wherein said lip supporting member engages the under surface of the lip to lock the lip in the extended position;
- biasing means connected to said lip supporting member and urging said lip supporting member to said stored position, and locking means connected to said lip supporting member for locking said lip locking member in said operative position.
A maintenance assembly for a dockboard having a ramp and a lip hinged to the forward edge of the ramp and movable between a pendant position and an extended position, comprising a bracket connected to the under surface of the ramp;
- a lip supporting member slidably contained in said bracket, said lip supporting member being movable between a stored position wherein said lip supporting member is disposed beneath the ramp and an operative position wherein said lip supporting member engages the under surface of the lip to lock the lip in the extended position;
- biasing means connected to said lip supporting member and urging said lip locking member to said stored position;
- and locking means connected to said lip supporting member and engageable with said bracket to lock said lip locking member in said operative position.
A maintenance assembly for dockboard having a ramp, and a lip hinged to the forward edge of the ramp, the lip being pivotally movable between a pendant position and an extended position, comprising a bracket connected to the under surface of the ramp and having an opening therein;
- a lip supporting member having a foward handle section and a rearwardly extending lip supporting section slidably contained in said opening, said opening having a greater height than the vertical cross-section of said lip supporting section whereby said lip supporting section may move vertically in said opening, said lip supporting member being movable in a forward-aft direction between a stored position wherein said lip supporting member is disposed beneath the ramp and an operative position wherein said lip supporting member engages the under surface of the lip to lock the lip in the extended position;
- biasing means connected to said lip supporting member and urging said lip supporting member to said stored position;
- and an abutment disposed on said lip supporting section, said abutment protruding from the upper surface of said lip supporting section, whereby upon engagement of said lip supporting member with the extended lip, said lip supporting section is urged ito engagement with the lip hinge causing the lip supporting member to pivot about the hinge and bring said abutment into engagement with said bracket to lock said lip supporting member in said operative position.
A maintenance assembly for a dockboard having a ramp and a lip hinged to the forward edge of the ramp and movable between a pendant position and an extended position, comprising a lip supporting member for holding the lip in the extended position, means for supporting said lip supporting member in movement beneath the ramp from a stored position wherein said lip supporting member is disposed beneath the ramp to an operative position wherein said lip supporting member engages the under surface of the lip to lock the lip in the extended position;
- locking means movable between a locking position wherein said lip supporting member is locked in said operative position:
- and a released position, and means responsive to the weight of the lip being applied to said lip supporting member when the lip supporting member is in the operative position for moving said locking means from the released position to said locking position whereby inward movement of said lip supporting member is prevented.
A maintenance assembly for a dockboard having a ramp and a lip connected to the forward edge of the ramp by a hinge pin and pivotally movable between a pendant position and an extended position, comprising a bracket connected to the under surface of the ramp and having an opening therein;
- a lip supporting member slidably contained in said opening and positioned above said hinge pin, said lip supporting member being movable between a stored position wherein said lip supporting member is disposed beneath the ramp and an operative position wherein said lip supporting member extends out beyond the hinge pin and engages the under surface of the lip and supports the lip in an extended position;
- biasing means connected to said lip supporting member and urging said lip supporting member to said stored position;
- and an abutment disposed on the upper surface of the rearward portion of said lip supporting member whereby when said lip supporting member is in said stored position said abutment is positioned behind said bracket and when said lip supporting member is moved to said operative position said abutment is moved through said bracket opening and positioned in front of said bracket whereby the engagement of the lip with said lip supporting member causes said lip supporting member to pivot about the hinge pin and bring said abutment into engagement with said bracket to prevent rearward movement of said lip supporting member.
Dependencies are inferred from the claim text.