The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2002
Filed:
Dec. 23, 1998
Masaharu Nakamori, Wako, JP;
Katsunori Okubo, Wako, JP;
Tadahisa Masatani, Wako, JP;
Masashi Yokoyama, Wako, JP;
Hiroaki Miyata, Wako, JP;
Yukinori Kaneda, Hamamatsu, JP;
Toshiaki Okada, Hamamatsu, JP;
Mitsunori Takekawa, Hamamatsu, JP;
Shigeo Kimura, Hamamatsu, JP;
Manabu Shinchi, Hamamatsu, JP;
Other;
Abstract
A cylindrical honeycomb structure formed by spirally winding a strip metal flat sheet and a strip metal corrugated sheet overlapped thereon. The metal flat sheet is welded, at each turn, to the metal corrugated sheet at a plurality of axially arranged welding positions on each portion where the metal flat sheet contacts the metal corrugated sheet. Letting L be the axial length of the honeycomb structure and D be the diameter of the honeycomb structure, the maximum value L of distances between adjacent welding positions satisfies at least one of relationships given by L ≦/D/2 and L ≦/L/2, or the distance L between the outermost welding positions in the axial direction of the honeycomb structure and the outer end face of the honeycomb structure satisfies at least one of relationship given by L ≦/D/20 and L ≦/L/10.