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. 20, 1984
Filed:
Jul. 06, 1981
Tom A O'Hanlon, Tacoma, WA (US);
Peter L Madonna, Redmond, WA (US);
Gearld F Wallace, Federal Way, WA (US);
Flow Industries, Inc., Kent, WA (US);
Abstract
A hand held fluid jet drilling apparatus is described. The drill includes an elongated drill stem with a fluid jet nozzle on one end and a motor on the other end. High pressure fluid is supplied to the drill from an external power pack which also produces compressed air. The drill includes a high pressure swivel which allows the motor to rotate the nozzle while a continuous supply of fluid is present. The drill stem is spring mounted to provide protection to the operator. The swivel may also operate as an on-off valve which supplies flushing fluid while the drill is off. The drill is operable as a drill, reamer or slotting tool by suitable arrangement of controls. A second embodiment is illustrated which provides for continuous flushing with low pressure fluid during operation. The drill is also attachable to mechanical feed systems to extend face coverage.