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:
Feb. 05, 2019
Filed:
Oct. 23, 2015
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
James O. Myrhum, Jr., West Bend, WI (US);
Troy C. Thorson, Cedarburg, WI (US);
Jeremy R. Ebner, Milwaukee, WI (US);
Sean T. Kehoe, Waukesha, WI (US);
Joseph H. Ellice, Greenfield, WI (US);
Jeffrey S. Holly, West Bend, WI (US);
MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US);
Abstract
A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a hydraulic assembly driven by the motor and including a reservoir containing hydraulic fluid, a secondary housing coupled to the main housing and defining a bore therein, a working piston moveable within the bore between a rest position and an actuated position, and a work zone defined between the secondary housing and the working piston into which pressurized hydraulic fluid discharged from the hydraulic assembly is received. One unit of fluid is added to the work zone to move the working piston from the rest position to the actuated position. The reservoir has a fill capacity no greater than about 1.5 units of fluid.