Lock apparatus for hoistable vehicle structures

Claim 2

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving and reaction member, including pressure cylinder means, and being mechanically coupled to said second locking structure whereby to move the latter to lock and unlock positions relative to said first locking structure.

Claim 3

Structure according to claim 1 wherein said first locking structure comprises a depending lock leg having an inner slot, said second locking structure comprising a rigid elongate member releasably disposed through said inner slot.

Claim 4

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first primary structure comprises a cab pivoted to said second primary structure, said second primary structure comprising a wheel-supported vehicle frame, said lost-motion linkage and hoist means comprising said pressure cylinder, having a piston rod pivotally connected to said cab and a cylinder having a connecting portion comprising said connection structure, said reaction member being fixed to said vehicle frame, a lever medially pivoted to said frame anD articulatively coupled to said connecting portion at one extremity and to said second locking structure of said vehicle frame.

Claim 5

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first primary structure comprises a cab pivoted to said second primary structure, said second primary structure comprising a wheel-supported vehicle frame, said lost-motion linkage and hoist means comprising said pressure cylinder, having a piston rod pivotally connected to said cab and a cylinder having a connecting portion comprising said connection structure, said reaction member being fixed to said vehicle frame, a lever medially pivoted to said frame anD articulatively coupled to said connecting portion at one extremity and to said second locking structure of said vehicle frame.

Claim 6

Structure according to claim 3 wherein said vehicle frame includes guide means for slideably receiving said second locking structure.

Claim 7

Structure according to claim 3 wherein said lever includes slotted pivot apertures.

Claim 8

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first locking structure comprises a retainable, depending lock leg, said second primary structure including funnel-configured guide means receiving said lock leg.

Claim 9

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first locking structure comprises a retainable, depending lock leg, said second primary structure including funnel-configured guide means receiving said lock leg.

Claim 10

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first primary structure comprises a tilt cab tiltably connected to said second primary structure, said second primary structure comprising a wheel-supported vehicle frame, said tilt cab including a reaction surface element and a depending lock leg, as the said second locking structure, depending therefrom, said vehicle frame including a spring biased guide support guidingly receiving said lock leg and having guide cone means supportingly engaging said reaction surface support.

Claim 11

In combination, first primary structure having a first locking structure; second primary structure having a second locking structure releasably lockable with said first locking structure, one of said first primary structure and said second primary structure having a reaction member; and lost-motion linkage and hoist means operably connected between said first primary structure and said second primary structure, at said second locking structure, for selectively unlocking said first and second locking structures and lifting said first primary structure relative to said second primary structure, and subsequently for effecting the lowering of said first primary structure and re-locking said first and second locking structures, said lost-motion linkage and hoist means including connection structure provided with a lost-motion slot slideably receiving said reaction member, including pressure cylinder means, and being operably connected to said second locking structure, and wherein said first primary structure comprises a tilt cab tiltably connected to said second primary structure, said second primary structure comprising a wheel-supported vehicle frame, said tilt cab including a reaction surface element and a depending lock leg, as the said second locking structure, depending therefrom, said vehicle frame including a spring biased guide support guidingly receiving said lock leg and having guide cone means supportingly engaging said reaction surface support.

Claim 12

For inter-position between the tilt cab and the frame of a truck type vehicle, in combination, a reaction member constructed for securement to said vehicle frame, a hoist cylinder constructed for a pivotal securement to said cab and including a cylinder extension provided with a slotted aperture receiving said reaction member, inter-cooperating locking means for releasably securing said cab to said vehicle frame, and articulative linkage means for releasably locking said inter-cooperating means, to thereby secure said cab to said vehicle frame, said linkage means being articulatively secured to said cylinder extension.

Claim 13

For inter-position between the tilt cab and the frame of a truck type vehicle, in combination, a reaction member constructed for securement to said vehicle frame, a hoist cylinder constructed for a pivotal securement to said cab and including a cylinder extension provided with a slotted aperture receiving said reaction member, inter-cooperating locking means for releasably securing said cab to said vehicle frame, and articulative linkage means for releasably locking said inter-cooperating means, to thereby secure said cab to said vehicle frame, said linkage means being articulatively secured to said cylinder extension.