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United States Patent (19) 11 Patent Number: 4,754,514 Limb et al. (45) Date of Patent: Jul. 5, 1988 54 INSULATING COVERLET FOR 56 References Cited CONVENTIONAL WATERBEDS U.S. PATENT DOCUMENTS 2,087,505 7/1937 Davis ...................................... 5/502 76 Inventors: Garth J. Limb; Sandra L. Limb, both 3,242,508 3/1966 Sion w ovo v via v v - w w w a e as a se - as a 5/502 of 7156 S. 1115 West, West Jordan, 3,405,674 10/1968 Coates et al. ........................... 5/502 Utah 84084 3,467,974 9/1969 Deutsch .................................. 5/502 3,485,711 12/1969 Fish, Jr. et al. ..................... 428/376 3,900,648 8/1975 Smith ............................... 428/317.9 21). Appl. No.: 94,038 4,269,889 5/1981 Takagi .............................. 428/311. 4,395,455 7/1983 Frankosky .......................... 428/398 lar. 4,499,133 2/1985 Prince ........ ... 428/81 22 Filed: Aug. 31, 1987 4,514,455 4/1985 Hwang ....... 428/398 4,569,874 2/1986 Kuznetz .............................. 428/398 O 4,608,298 8/1986 Klaff................................. 428/316.6 Related U.S. Application Data 63 Continuation of Ser. No. 846,131, Mar. 31, 1986, aban- FOREIGN PATENT DOCUMENTS doned. 1069622 l/1980 Canada .................................... 5/500 Primary Examiner-William J. Van Balen 51 Int. Cl." .......................... E04H 3/19; B32B 3/02; Attorney, Agent, or Firm-Trask, Britt & Rossa B32B5/02; B32B5/18 57 ABSTRACT 52 U.S.C. ........................................... 5/502; 5/498; 428/71; 428/76; 428/81; 428/156; 428/215; A coverlet for conventional, unheated waterbeds which 428/287; 428/297; 428/298; 428/316.6; provides effective insulation is disclosed.
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