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:
May. 03, 1977
Filed:
Apr. 01, 1975
Applicant:
Inventor:
Hakan Vangbo, Jarfalla, SW;
Assignee:
Aktiebolaget Carl Munters, Sollentuna, SW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
428186 ; 156210 ; 427344 ; 427352 ; 4273 / ;
Abstract
A method of manufacturing a contact body is disclosed wherein layers of asbestos are formed and arranged so that the individual layers bear against one another at mutually spaced positions to provide a plurality of channels extending through the body from one end to the other with the layers being heated together with at least one substance containing silicon and aluminum to sintering temperature. The addition of silicon and alumina to the contact body is adjusted so that in the sintered layers the ratio, by weight, of the oxide of silicon to the oxides of aluminum and magnesium is in the range of 45-55% SiO.sub.2, 30-45% Al.sub.2 O.sub.3 and 10-20% MgO.