Gasket

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Description

FIG. 1 is a perspective view of a gasket showing our new design.

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof; the other sides being the same as the side shown; and

FIG. 5 is an enlarged cross sectional view taken on line 5--5 of FIG. 2.

Referenced Cited
U.S. Patent Documents
D244533 May 31, 1977 Eidelberg et al.
D256046 July 22, 1980 Perrin
3189360 June 1965 Haberkorn
3507505 April 1970 Muhlner et al.
3768819 October 1973 Burkert
4304415 December 8, 1981 Wolf et al.
4343480 August 10, 1982 Vassallo
4368894 January 18, 1983 Parmann
4448429 May 15, 1984 Thomas
4579354 April 1, 1986 Vassallo et al
Other references
  • Vassallo Industries catalog entitled "Gasketed Sewer Main Fittings". Vassallo Industries catalog entitled "PVC Sewer Main Fittings", revised Nov. 1, 1978, cover page and next to last page. Vassallo Industries catalog entitled "P.V.C. Sewer Fittings Gasketed, List Prices" effective Jun. 1980, front cover. Vassallo Industries publication entitled "The Ultimate Gasket System", pp. 2 & 3. Vassallo Industries publication entitled "List Prices P.V.C. Sewer Fittings Gasketed", effective Sep. 1980, p. 2.
Patent History
Patent number: D289078
Type: Grant
Filed: Oct 26, 1984
Date of Patent: Mar 31, 1987
Assignee: Vassallo Research and Development Corporation (Ponce, PR)
Inventors: Efrain D. Vassallo (Ponce, PR), Jose E. Valls (Ponce, PR)
Primary Examiner: James R. Largen
Law Firm: Steele, Gould & Fried
Application Number: 6/664,992
Classifications
Current U.S. Class: D23/47