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US 4,186,162 AGranted
Method of making a platen core
OwnerThomas G. Daleyinventor
Life of this patent
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Abstract
A method of making a business machine platen core wherein a cylindrical body including a hollow tube extending co-axially thereof is encapsulated with an insulative foam with a pair of opposed plugs inserted in each end thereof.
Claims5
A method for making a business machine platen core including the steps of:
- (a) inserting one end of an elongated rod into a centrally disposed opening of a first collar;
- (b) placing a tubular member onto said rod;
- (c) inserting said first collar, rod, and tubular member into one end of a cylindrical housing having openings in each end thereof;
- (d) inserting a first plug into said one end forcing said collar a preselected distance into said cylindrical member;
- (e) adding a foamable thermosetting resin reaction mixture to said cylindrical member, said mixture being added between the outer walls of said tubular member and the inner walls of said cylindrical member;
- (f) adding a second collar having a centrally disposed opening therein to the opposite end of said cylindrical member, said opening in said second collar receiving the opposite end of said elongated rod;
- (g) inserting a second plug into said opposite end of said cylindrical member forcing said collar a preselected distace into said cylindrical member;
- (h) foaming and curing said mixture;
- and ,
- (i) removing said plugs and rod from said cylindrical member.
7 more elements
Dependencies are inferred from the claim text.