Drywall mud hopper for inside and outside corners

Details Drywall mud hopper for inside and outside corners Drywall mud hopper for inside and outside corners

2011-06-14

2011-06-14

Bareford, Katherine A (Department: 1712)

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

C118S405000, C425S087000

Reexamination Certificate

active

07959978

ABSTRACT:
A drywall hopper assembly that contains a double blade that can apply drywall mud to both interior and exterior drywall corners with no blade change. A zigzag blade can contain two grooves, one for interior corners and one for exterior corners. With this blade arrangement, an operator can quickly move from one type of corner to another without using multiple tools, multiple blades or hand application methods to apply mud. The present invention can contain a pliable release port to present mud equally to an interior or an exterior corner. There can be such a port on both the top and bottom of the blade so that mud is smoothly applied as trim moves through the hopper or the hopper is moved along the trim.

REFERENCES:
patent: 2178899 (1939-11-01), Shaffer
patent: 3087654 (1963-04-01), Moore
patent: 3209389 (1965-10-01), Stahl
patent: 4230441 (1980-10-01), Heronema
patent: 4516868 (1985-05-01), Molnar
patent: 4734022 (1988-03-01), Shimabukuro
patent: 4915610 (1990-04-01), Curry
patent: 5498287 (1996-03-01), Barnfield
patent: 5676793 (1997-10-01), Martin et al.
patent: 5695788 (1997-12-01), Woods
patent: 6907908 (2005-06-01), Weldy
Placor website, Convertible hopper, Oct. 20, 2001, p. 1-3.
Pla-Cor Convertible Hopper Dec. 30, 2003.

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