System for mixing and dispensing concrete
AssigneeMcNeilus Truck and Manufacturing, Inc.
InventorRonald E. Christenson
Life of this patent
Estimating the term…
Abstract
An assembly which is adapted for mounting inside a mixing drum and a mobile system for mixing and dispensing concrete includes fin structure for mixing and guiding a substance when the mixing drum is rotated. The fin structure is constructed of a lightweight polymeric material which is resistant to abrasion and is many times lighter than steel. As a result, the weight of such a system is reduced in comparison to systems which were heretofore known. Preferably, the fin structure is fabricated from a polymer which tends to wear smooth rather than rough, which increases the cleanability of the fin structure over its entire design life. Novel structure for securing the fin structure to an outer wall of the mixing drum is also disclosed.
Claims38
A mobile system for mixing and dispensing a mixture such as concrete, comprising:
- a vehicle;
- a mixing drum mounted for rotation on a rear portion of said vehicle, said mixing drum having an outer wall which defines a mixing space within said mixing drum;
- fin means within said mixing space for mixing and guiding a substance within said mixing space when said mixing drum is rotated, said fin means being constructed of a lightweight, resilient, polyurethane-based polymeric material which is flexible and resistant to abrasion, whereby the fin means will flex during operation to cause any dried concrete adhering thereto to flick off and the weight of the system is reduced in comparison to systems which were heretofore known;
- and
- means for securing said fin means to said outer wall.
An assembly which is adapted for mounting inside a mixing space which is defined by an outer wall of a mixing drum in a mobile system for mixing and dispensing a mixture such as concrete, comprising:
- fin means for mixing and guiding a substance within the mixing space when the mixing drum is rotated, said fin means being constructed of a lightweight resilient, polyurethane-based polymeric material which is flexible and resistant to abrasion, whereby the fin means will flex during operation to cover any dried concrete adhering thereto to flick off and the weight of a system can be reduced in comparison to systems which were heretofore known;
- and
- means adapted for securing said fin means to said outer wall.
Dependencies are inferred from the claim text.