Material or article handling – Self-loading or unloading vehicles
Patent
1987-07-20
1989-01-10
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
193 23, 188 724, 188 728, 298 7, 414537, B65G 6724
Patent
active
047970561
ABSTRACT:
A safety brake is provided for a cement truck chute to immobilize the chute from lateral movement relative to the cement truck chassis. Movement of the cement truck chute is controlled by a ram which is secured to a vertically oriented ram pivot axle rotatably mounted in a sleeve secured to the truck chassis. A first horizontal brake pad is located concentrically about the ram pivot axle and is immobilized relative to the chassis. The safety brake includes a pneumatic actuator having a housing and a plunger actuable for reciprocal movement relative to the housing. A flat, horizontal ram coupling plate is rigidly secured to the ram pivot axle and holds the pneumatic actuator housing at a spaced elevation thereabove with the pneumatic actuator plunger coaxially aligned with the ram pivot axle. A horizontal intermediate plate is located between the ram coupling plate and the pneumatic actuator housing and is secured to the pneumatic actuator plunger. Guide posts extend through guide openings in the ram coupling plate to join the intermediate plate to the second brake pad. When actuated, the pneumatic actuator plunger forces the intermediate plate down, thus pressing the second brake pad against the first to immobilize the ram from rotation relative to the cement truck chassis.
REFERENCES:
patent: 1500520 (1924-07-01), Neander
patent: 2672327 (1954-03-01), Oury
patent: 2888103 (1959-05-01), Armstrong
patent: 3908843 (1975-09-01), Noller et al.
patent: 3976168 (1976-08-01), Yamamoto
Gerold Charles
Gregorio John
Thomas Charles H.
Werner Frank E.
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