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Class Information
Number: 5/688
Name: Beds > Waterbed or associated device > Integral, unitary bladder structure > With corner reinforcing means
Description: Waterbed with unitary bladder in which a 90° portion of the bladder perimeter is strengthened to prevent rupture of the bladder.

Patents under this class:

Patent Number Title Of Patent Date Issued
5411621 Waterbed corner structure and method May. 2, 1995
5113541 Waterbed corner structure May. 19, 1992
5090075 Waterbed draining system including vacuum relief valve Feb. 25, 1992
5077847 Waterbed mattress corner and method of making same Jan. 7, 1992
5062170 Waterbed mattress and corner structure with tethered insert Nov. 5, 1991
5050257 Easy draining waterbed mattress and method Sep. 24, 1991
5005237 Mattress corner adhesion patches Apr. 9, 1991
4930172 Waterbed corner structure and method Jun. 5, 1990
4914761 Reinforced corner for waterbed mattress Apr. 10, 1990
D270693 Water bed mattress Sep. 27, 1983
4251308 Method for making a watermattress with t-corner construction Feb. 17, 1981
4173049 Flotation liner waterbed structure Nov. 6, 1979
4025975 Water bed mattress May. 31, 1977
3957557 Water mattress and method of manufacture May. 18, 1976

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