Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-11-30
1997-08-26
Merriam, Andrew E. C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524 5, 524425, 524445, 524451, 524 47, 524837, 524918, 106613, C08K 334, C08L 2904, C08L 8304, C08L 302
Patent
active
056612117
ABSTRACT:
A patching compound for patching holes in drywall, cement, and the like, includes well known drywall mud material, water, and various other ingredients such as calcium carbonate, gypsum, perlite, mica, talc, clay, starch, cement, and a preservative, such as sorbic acid or a product sold as boroguard ZB. The various ingredients are mixed with water to provide a relatively soft and pliable filler compound. Silicone caulking may also be used for moisture retention, if desired. The compound is place in a dispenser for dispensing, and the dispenser may either be a relatively small dispenser for household use or a relatively large dispenser for commercial and industrial use. For the household use, the dispenser preferably includes a housing having an asymmetrical configuration in which is disposed a piston. The piston moves within the cylinder and is prevented from rotating by the asymmetrical configuration of the cylinder. Rotation of a threaded rod causes the piston to move the compound, as desired. A cap fits onto the cylinder for sealing the compound in the cylinder. For industrial or commercial purposes, a dispenser is preferably a circular cylinder made of heavy paper, or the like, with spiral strips that allow the cylinder to be torn away to expose the compound for use. A cap is also used with the commercial or industrial dispenser.
REFERENCES:
patent: 3867335 (1975-02-01), Reed et al.
patent: 4454267 (1984-06-01), Williams
patent: 4686253 (1987-08-01), Struss et al.
patent: 5512616 (1996-04-01), Podlas
Merriam Andrew E. C.
Shields H. Gordon
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