[21] Appl. No.: 09/108,634 [22] Filed: Jul. 1, 1998
Related U.S. Application Data
[60] Provisional application No. 60/051,419, Jul. 1, 1997.
[51] Int. C I. A47C 27/14
[52] U.S. CI 5/709; 5/655.3; 5/655.9
[58] Field of Search 5/644, 706, 708,
5/709, 710, 713, 718, 654, 655.3, 655.9;
297/199, 200; 2/455, 456
[56] References Cited
U.S. PATENT DOCUMENTS
1,332,933 3/1920 Sylvester 5/709 X
2,620,493 12/1952 Brelsford 5/709 X
3,017,642 1/1962 Rosenberg et al 5/655.3 X
3,849,801 11/1974 Holt et al. .
4,370,754 2/1983 Donzis .
Primary Examiner—-Terry Lee Melius
Assistant Examiner—Fredrick Conley
Attorney, Agent, or Firm—Harness, Dickey & Pierce, PL.C.
[57] ABSTRACT
An air pad having a plurality of foam filled air chambers interconnected by at least one air passage connecting at least two of the air chambers to one another. The air passages are also filled with foam whereby the flow of air from one air chamber to another due to impact is restricted. The pad is manufactured by radio frequency welding of two layers of plastic film to one another about a foam body to join the plastic film in the area surrounding each of the air chambers.
5 Claims, 8 Drawing Sheets
