Shell encased pool chemical tablet

- Olin Corporation
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Description

FIG. 1 is a top perspective view of a shell encased pool chemical tablet showing my new design;

FIG. 2 is a side elevational view thereof, the other side being identical;

FIG. 3 is an end elevational view thereof, the other end being identical; and,

FIG. 4 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
31133 July 1899 Lantz
D258091 January 27, 1981 Reed et al.
D271534 November 29, 1983 Huzinec
D283649 April 29, 1986 Calberg
2711346 June 1955 Irwin et al.
3856932 December 1974 May
4215104 July 29, 1980 Ullman et al.
4333752 June 8, 1982 Thies et al.
4350666 September 21, 1982 Klutts
4374563 February 22, 1983 Alexander
Other references
  • USSN 191,640 filed May 9, 1988 entitled "Encased Pool Chemical Tablet with Domed Ends" by John M. Casberg.
Patent History
Patent number: D325619
Type: Grant
Filed: Feb 27, 1989
Date of Patent: Apr 21, 1992
Assignee: Olin Corporation (Cheshire, CT)
Inventor: John M. Casberg (Cheshire, CT)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Application Number: 7/316,116
Classifications
Current U.S. Class: Treatment (D23/207); Tablet Or Caplet (1) (D24/101)