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:
Jul. 16, 1985
Filed:
Mar. 24, 1983
Applicant:
Inventor:
David L O'Dell, Mishawaka, IN (US);
Assignee:
Wheelabrator-Frye, Inc., Mishawaka, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
408 / ; 408 59 ; 184-64 ; 239113 ; 407 11 ;
Abstract
An improved method and apparatus for supplying a fluid coolant to a tool designed for drilling a hole in a workpiece, wherein a first coolant flow is supplied under pressure in a pulsating flow to the tip of the drill by a first pump with a second and booster coolant flow being supplied in a pulsating flow and under considerably greater pressure than the first flow. The second fluid flow is initiated in response to the build-up of back pressure to the first fluid flow to thereby flush away chips impacted on the drill causing such back pressure. The second fluid flow is terminated in response to the drop of back pressure to the first fluid flow.