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:
Aug. 23, 1988
Filed:
Aug. 05, 1987
Applicant:
Inventor:
Steven R Zohler, Manlius, NY (US);
Assignee:
Carrier Corporation, Syracuse, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29727 ; 2915 / ; 72 98 ; 72370 ;
Abstract
An apparatus for producing a high performance evaporator tube having a subsurface channel formed between adjacent helical fins with the subsurface channels having alternating closed portions and open pores above the subsurface channels. The fins of the tube are rolled-over toward the adjacent fin and then contacted with a notched disc to form the alternating closed portions and open pores.