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. 04, 2020
Filed:
Nov. 17, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Patrick Eiswerth, Chicago, IL (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A bolt assembly () enables a user to change a circular blade () on a power tool () without the use of tools. The bolt assembly includes a bolt body () that has a bolt head () and a shank () that extends axially from the bolt head. The bolt head has a shoulder and the shank has external threads that mate with a threaded bore () of a drive shaft () of the power tool. A grip body () is formed circumferentially around the bolt head to facilitate rotation of the bolt body by the user's hand. An upper washer (), a needle roller thrust bearing (), and a lower washer () are positioned on the bolt head and retained with a retaining clip (). The bolt body is rotated to press the lower washer against a clamping surface of the circular blade. The bolt assembly permits rotation of the lower washer relative to the bolt body without rotating the bold body.