Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Funnel type
Reexamination Certificate
2001-04-23
2002-10-08
Huson, Gregory L. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
Funnel type
C141S331000, C141S340000
Reexamination Certificate
active
06460581
ABSTRACT:
FIELD OF INVENTION
The invention relates to a hopper for efficiently diverting materials such as concrete into the hollows of a wall.
LIST OF REFERENCES CITED
Inventor
Number
Class
Issue Date
Danzi
5,732,753
141/340
3/31/1998
Hedrickson
5,868,180
141/340
2/9/1999
BACKGROUND DISCUSSION OF RELATED ART
When building a cinder block wall, various cells need to be filled with concrete. Often times, rebar steel reinforcement beams must be placed within the cells of a cinder block wall to strengthen the wall. Without concrete, a cinder block wall can be easily broken.
For large projects, construction workers usually fill concrete walls by mixing concrete in a concrete mixer and then pouring the concrete from a chute into the cells of a wall. For small projects, concrete is mixed in a bucket, which is used to pour the concrete into the cells of the wall.
Several devices have attempted to expedite the pouring of concrete into the cells of a wall. The Hedrickson device U.S. Pat. No. 5,868,180, issued Feb. 9, 1999 is entitled Concrete form splash funnel. The Hedrickson funnel is shaped to pour concrete into a wall. The funnel is placed with the mouth inside the wall to allow a user to pour concrete into the wall. The Deye funnel must be removed and placed in every set of cells that need to be filled. It does not allow a user to pour concrete and rod the concrete at the same time. The term rod is the industry term for screed. The Hedrickson device is a low cost funnel for directing the flow of fluid concrete to the form for a concrete wall or a concrete block wall. The funnel can be unitary and of plastic. Further, the funnels can be nested with each other for ease of storage and cost of transportation.
For larger walls, Danzi U.S. Pat. No. 5,732,753, 141/340 (issued Mar. 3, 1998 uses a funnel system. The Danzi device is a cylindrical hopper with a funnel that slidably engages the upper edges of a pair of spaced form walls. While the Danzi device allows wall filling on a continuous basis, but requires many parts and is better suited for large projects.
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Marshall Kenneth Gene
Smith David Prom
Huson Gregory L.
Huynh Khoa
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