Ronald A Todd

US Patent:

56612117, Aug 26, 1997

Filed:

Nov 30, 1995

Appl. No.:

8/565724

Inventors:

Ronald L. Todd - Scottsdale AZ

International Classification:

C08K 334
C08L 2904
C08L 8304
C08L 302

US Classification:

524503

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.