Lift mechanism for truck sideboards
OwnerGeorge D. Louderback, Sr.inventor
Life of this patent
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Abstract
This disclosure relates to a lift mechanism depicted to be utilized in conjunction with swingably mounted sideboards of truck boxes. The lift mechanism is so constructed wherein it will permit the swinging of a sideboard from an upright box-closing position to a depending position and return without the utilization of the lift mechanism, while at the same time the lift mechanism is actuable to either selectively position the sideboard in an intermediate position or to move the sideboard from an open position to a box-closing position.
Claims16
A lift mechanism for use in positioning box sideboards and the like, said lift mechanism comprising a support, a position control arm, means mounting said position control arm on said support for pivotal movement about a generally horizontal axis for movement between a generally upright first position and a depending second position, an actuating arm connected to said position control arm for controlling the position of said position control arm, and positioning means carried by said support and coupled to said actuating arm for selectively permitting movement of said position control arm from said first position to said second position independent of movement of said positioning means and for moving said position control arm towards said first position.
A lift mechanism for use in positioning box sideboards and the like, said lift mechanism comprising a support, a position control arm, means mounting said position control arm on said support for pivotal movement about a generally horizontal axis for movement between a generally upright first position and a depending second position, an actuating arm connected to said position control arm for controlling the position of said position control arm, and positioning means carried by said support and coupled to said actuating arm for selectively permitting movement of said position control arm from said first position to said second position and for moving said position control arm towards said first position, said positioning means including an elongated guide of a length generally corresponding to the movement of the coupling between said actuating arm and said positioning means during the movement of said position control arm between said first and second positions, and movable support means coupled to said guide for positioning the same.
A box assembly comprising a base, a sideboard pivotally connected to said base for swinging movement between an upright box closing first position and a depending out of the way second position, and a lift mechanism carried by said base and coupled to said sideboard for moving and positioning said sideboard, said lift mechanism comprising a support secured to said based, a position control arm, linkage coupling said position control arm to said sideboard, means mounting said position control arm on said support for pivotal movement about a generally horizontal axis for movement between a generally upright first position and a depending second position, an actuating arm connected to said position control arm for controlling the position of said position control arm, and positioning means carried by said support and coupled to said actuating arm for selectively permitting movement of said position control arm from said first position to said second position independent of movement of said positioning means and for moving said position control arm towards said first position.
Dependencies are inferred from the claim text.