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US 8,287,173 B2Granted
Mixing drum hatch
AssigneeMcNeilus Truck and Manufacturing, Inc.
InventorAnthony J. Khouri
Life of this patent
Estimating the term…
Abstract
A rotary concrete mixing drum (16) for a vehicle (10) having a drivetrain (18) for rotating the drum (16) includes a wall (33) having an opening (67) and a hatch cover assembly (37/200) removably closing the opening. The hatch assembly (200) may include a hatch cover (202) coupled to a panel (204) by bolts (212).
Claims29
A heavy duty rotary concrete mixing drum for coupling to a vehicle having a drivetrain for rotating the drum, the drum comprising:
- a wall defined at least partially by a first spiral wall section and a second spiral wall section, the wall having an inner surface and an outer surface and including an opening;
- an assembly releasably coupled to the opening, the assembly comprising:
- a hatch cover positionable adjacent the inner surface and having a raised region that extends through the opening from the inner surface towards the outer surface;
- and
- a panel coupled to the wall proximate the opening;
- wherein when the hatch cover and the panel are coupled together, the opening is substantially sealed and closed.
3 more elements
A concrete mixing drum comprising:
- a first molded polymeric helical wall element;
- a second molded polymeric helical wall element joined to the first molded polymeric helical wall element, wherein the first molded polymeric helical wall element and the second molded polymeric helical wall element form a substantially continuous common wall circumferentially extending about a longitudinal axis to form an interior of the drum, the common wall including an opening, and wherein the first helical wall element and the second helical wall element are joined along a helical seam;
- and
- a hatch disposed in the common wall, the hatch comprising:
- a hatch cover having a raised region that extends through the opening from the interior of the drum towards the exterior of the drum;
- and
- a panel coupled to the wall proximate the opening;
- wherein when the hatch cover and the panel are coupled together, the opening is substantially sealed and closed.
5 more elements
Dependencies are inferred from the claim text.