Land vehicles: dumping – Tilting – With cover or endgate control
Patent
1989-11-01
1990-10-16
Spar, Robert J.
Land vehicles: dumping
Tilting
With cover or endgate control
298 1B, B60P 100
Patent
active
049629662
ABSTRACT:
In a tailgate assembly for a dump box of the type comprising a front inner section and a rear outer section adapted for telescopic movement one with respect to the other with the inner section slidably engaging an interior surface of the outer section. The relative position of the inner and outer sections between an expanded and a collapsed position thereof is controlled by hydraulic cylinders. The tailgate assembly comprises a tailgate hingedly mounted to the rear of the outer section. A push rod has a front end thereof fixedly mounted at a front side of the inner section of the dump box. The push rod extends rearwards from its front end through a guide mounted on a sidewall of the outer section and towards the tailgate. A chain assembly connects a lower free end of the tailgate with a rear end of the push rod. The chain assembly is adapted to be in a substantially extended position thereof when the dump box is in its expanded position. Therefore, upon collapsing of the dump box, slack will be provided to the chain assembly thereby allowing the tailgate to pivot gradually towards a fully open position thereof. As the cylinders are thus actuated, the inner section of the dump box displaces accordingly which results in a corresponding movement of the push rod and therefore of the tailgate with respect to the rear opening of the dump box.
REFERENCES:
patent: 2663439 (1953-12-01), Phelps
patent: 3827753 (1974-08-01), Pitts
patent: 4111485 (1978-09-01), Martin et al.
patent: 4260317 (1981-04-01), Martin et al.
patent: 4384816 (1983-05-01), Martin et al.
Hienz William M.
Meerkreebs Samuel
Spar Robert J.
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