Land vehicles – Ski or skate appliance or attachment – Scabbards for ice or roller skates
Patent
1975-06-23
1976-08-24
Rothberg, Samuel B.
Land vehicles
Ski or skate appliance or attachment
Scabbards for ice or roller skates
280475, B62D 5308
Patent
active
039762840
ABSTRACT:
A concrete mixer truck and a concrete mixer trailer with each adapted for mixing a concrete mix in transit and at a construction site and for discharging the mix at the site. The concrete mixer trailer towed by a concrete mixer truck includes a leading axle, an intermediate axle, and a trailing axle mounted on a trailer frame in longitudinally spaced relation and each having dual wheels on each of the opposite ends thereof for substantially equal weight distribution thereon. A longitudinally adjustable tongue structure has one end thereof pivotally connected to a leading end portion of the trailer frame for vertical swinging movement and the other end thereof adapted to be connected to a concrete mixing truck. An extensible member has one end thereof pivotally connected to an intermediate portion of the tongue structure and the other end of the extensible member engages a suitable support surface whereby the extensible member is adapted to support the tongue structure when disconnected from the prime mover and to selectively raise and lower the other end of the tongue structure. The trailer has a prime mover for driving the drum and a water tank and other equipment for mixing and discharging concrete at a building site. A concrete mixer drum is rotatably mounted on the trailer frame and has structures thereon for receiving concrete mix and discharging same after mixing.
REFERENCES:
patent: 3019002 (1962-01-01), Prichard
patent: 3112100 (1963-11-01), Prichard
patent: 3627352 (1971-12-01), Canole
patent: 3746369 (1973-07-01), Neff et al.
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