US3958659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cab tilting mechanism for trucks
Assignee: Ford Motor Co
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Filing: 1974-04-12
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Granted: 1976-05-25
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Expires: 1994-04-12
Abstract
Abstract According to the preferred embodiment of this invention, a cab of a tilt cab truck is mounted on a chassis frame by suspension springs. A hydraulic ram is arranged to move the cab from a riding position to a tilted position. The means connecting the ram to the cab permits free movement of the cab on its suspension springs when the cab is in its riding position and provides a restraint against movement between the ram and cab when the cab is in its tilted position.
Inventors
- 👤 Alan Albert Selman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:40
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/0604; B62D33/063; B62D33/067; B62D33/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
259 words
A tilt cab truck having a cab, a chassis and pivot means connecting said cab to said chassis, said cab being angularly displaceable relative to said chassis about said pivot means from a riding position to a tilted position, a hydraulic ram constructed to exert a force capable of moving said cab from said riding position to said tilted position, suspension means interposed between said cab and said chassis, said suspension means resiliently supporting said cab for jounce and rebound vertical displacement relative to said chassis, said ram having a cylinder portion with one end pivotally connected to one of said chassis and said cab, said ram having a piston rod portion slidably engaging a coupling means secured to the other of said chassis and said cab, said coupling means having a trunnion member with a transverse axis and a bearing portion slidably supporting said piston rod, said piston rod having an abutment member affixed thereto and spaced from said trunnion member allowing relative linear displacement between said piston rod and said coupling means without imposing a substantial force upon said ram when said cab is in said riding position, said abutment member being constructed to engage said trunnion member when said ram is energized to move said cab from said riding position to said tilted position, said coupling means having hook shape retaining means engaging said abutment member and preventing substantial linear displacement between said piston rod and said trunnion member and between said piston rod and said coupling member when said cab is in said tilted position.
Claim 2
Dependent Claim
259 words
A tilt cab truck having a cab, a chassis and pivot means connecting said cab to said chassis, said cab being angularly displaceable relative to said chassis about said pivot means from a riding position to a tilted position, a hydraulic ram constructed to exert a force capable of moving said cab from said riding position to said tilted position, suspension means interposed between said cab and said chassis, said suspension means resiliently supporting said cab for jounce and rebound vertical displacement relative to said chassis, said ram having a cylinder portion with one end pivotally connected to one of said chassis and said cab, said ram having a piston rod portion slidably engaging a coupling means secured to the other of said chassis and said cab, said coupling means having a trunnion member with a transverse axis and a bearing portion slidably supporting said piston rod, said piston rod having an abutment member affixed thereto and spaced from said trunnion member allowing relative linear displacement between said piston rod and said coupling means without imposing a substantial force upon said ram when said cab is in said riding position, said abutment member being constructed to engage said trunnion member when said ram is energized to move said cab from said riding position to said tilted position, said coupling means having hook shape retaining means engaging said abutment member and preventing substantial linear displacement between said piston rod and said trunnion member and between said piston rod and said coupling member when said cab is in said tilted position.
Claim 3
Dependent Claim
301 words
A tilt cab truck having a cab, a chassis and pivot means connecting said cab to said chassis, said cab being angularly displaceable relative to said chassis about said pivot means from a riding position to a tilted position, a hydraulic ram constructed to exert a force capable of moving said cab from said riding position to said tilted position, suspension means interposed between said cab and said chassis, said suspension means resiliently supporting said cab for jounce and rebound vertical displacement relative to said chassis, said ram having a cylinder portion with one end pivotally connected to one of said chassis and said cab, said ram having a piston rod portion slidably engaging a coupling means secured to the other of said chassis and said cab, said coupling means having a trunnion member with a transverse axis and a bearing portion slidably supporting said piston rod, said piston rod having an abutment member spaced from said trunnion member allowing relative linear displacement between said piston rod and said coupling means without imposing a substantial force upon said ram when said cab is in said riding position, said abutment member being constructed to engage said trunnion member when said ram is energized to move said cab from said riding position to said tilted position, said coupling means engaging said abutment member and preventing substantial relative linear displacement between said piston rod and said coupling means when said cab is in said tilted position, said coupling means having arcuate ramp means engaging said abutment means when said cab is in said tilted position and said ram is energized to move said cab from said tilted position to said riding position whereby said ram may exert a force upon said cab to move said cab from said tilted position to said riding position.
Claim 4
Dependent Claim
301 words
A tilt cab truck having a cab, a chassis and pivot means connecting said cab to said chassis, said cab being angularly displaceable relative to said chassis about said pivot means from a riding position to a tilted position, a hydraulic ram constructed to exert a force capable of moving said cab from said riding position to said tilted position, suspension means interposed between said cab and said chassis, said suspension means resiliently supporting said cab for jounce and rebound vertical displacement relative to said chassis, said ram having a cylinder portion with one end pivotally connected to one of said chassis and said cab, said ram having a piston rod portion slidably engaging a coupling means secured to the other of said chassis and said cab, said coupling means having a trunnion member with a transverse axis and a bearing portion slidably supporting said piston rod, said piston rod having an abutment member spaced from said trunnion member allowing relative linear displacement between said piston rod and said coupling means without imposing a substantial force upon said ram when said cab is in said riding position, said abutment member being constructed to engage said trunnion member when said ram is energized to move said cab from said riding position to said tilted position, said coupling means engaging said abutment member and preventing substantial relative linear displacement between said piston rod and said coupling means when said cab is in said tilted position, said coupling means having arcuate ramp means engaging said abutment means when said cab is in said tilted position and said ram is energized to move said cab from said tilted position to said riding position whereby said ram may exert a force upon said cab to move said cab from said tilted position to said riding position.
Claim 5
Dependent Claim
29 words
A tilt cab truck according to claim 2 and including: said arcuate ramp means being spaced apart from said abutment member when said cab is in said riding position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |