Claims
- 1. A motor truck comprising a frame device, a body device movable relative to the frame device, bolt members extending vertically at opposite sides of said frame and body devices to hold said devices together, and an energy transforming means including a first plate member fixed to one of said devices and having an inclined first sliding surface and a second plate member fixed to the other of said devices and having a second sliding surface which slidably contacts with at least a portion of said first sliding surface and is inclined at an angle complementary to said first surface, said body device being moved upwardly by said energy transforming means when a longitudinal impacting force of or greater than a predetermined value is applied, and at least one shear plate fixed between said body and frame devices and adapted to be sheared by said longitudinal impacting force, but normally limiting the relative movement of said devices, said first and second sliding surfaces being linear.
- 2. A motor truck comprising a frame device, a body device movable relative to the frame device, bolt members extending vertically at opposite sides of said frame and body devices to hold said devices together, and an energy transforming means including a first plate member fixed to said frame device and having an inclined first sliding surface and a second plate member fixed to said body device and having a second sliding surface which slidably contacts with and is supported on at least a portion of said first sliding surface and is inclined at an angle complementary to said first surface, said first and second sliding surfaces being linear and being positioned to produce upward movement of said body device upon movement of said body device forwardly in relation to said frame device.
- 3. A motor truck as in claim 2 where said first and second plate members are so constructed and arranged that a greater length of said sliding surface of said second plate member progressively engages said sliding surface of said first plate member when said body device moves forwardly, and at least one shear plate fixed between said body and frame devices and adapted to be sheared by said longitudinal impacting force, but normally preventing relative movement of said devices.
- 4. A motor truck according to claim 3 wherein resilient means are operatively positioned between one of said devices and said bolt members to aid in absorbing kinetic energy from said body device on impact, said resilient means being at the upper ends of said bolt members and comprising bellville springs compressed by said bolt members against a metal plate which bears on said body device.
- 5. A motor truck according to claim 1, wherein resilient means are operatively positioned between one of said devices and said bolt members to aid in absorbing kinetic energy from said body device on impact.
- 6. A motor truck according to claim 1, wherein a washer plate is provided, and said bolt members extend through said washer plate and are stretchable by tensile forces above a predetermined value.
Parent Case Info
This is a divisional application four prior application Ser. No. 503,398 filed Sept. 5, 1974, now abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
503398 |
Sep 1974 |
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