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:
Mar. 03, 1981
Filed:
Mar. 23, 1978
Applicant:
Inventors:
S W Menzel, Adelaide, AU;
David E Mominee, Alpine, CA (US);
Assignee:
Reed Irrigation Systems, El Cajon, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B / ;
U.S. Cl.
CPC ...
264154 ; 264156 ; 408 / ; 408 50 ;
Abstract
A method of forming holes in plastic tubes which includes advancing a rotating shaft into and through the wall of the tube while maintaining a rate of rotation sufficient to cause the material of the tube to be distressed sufficiently to fluidize and/or disintegrate from the area of operation of the shaft, moving the shaft from the hole, and allowing the periphery of the hole to solidify.