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:
Apr. 07, 2020
Filed:
May. 10, 2016
Hytorc Division Unex Corporation, Mahwah, NJ (US);
Michael F. Dolan, Manasquan, NJ (US);
HYTORC Division UNEX Corporation, Mahwah, NJ (US);
Abstract
A rotation angle indicating retainer assembly for use with and/or integrated with a hydraulically driven device for tightening and loosening a threaded fastener is disclosed and includes: a retainer cap assembly having a hollow cylindrical shape with an upper hollow portion, a lower hollow portion, a hollow disc, a ring having polygonal connection formations and a ball bearing assembly; a plunger assembly having a cylindrical shape with a connection portion, a depression portion, a compression spring and a lower retaining ring; a rotation angle scale assembly having a hollow cylindrical shape with an upper hollow disc with an arrow indicator and a lower portion having polygonal formations; a rotation angle indicator assembly having a substantially hollow cylindrical shape with an upper rotation angle dial, a lower portion having a rotation angle scale, an upper retaining ring, a wave spring and friction ring; and wherein the rotation angle scale assembly is nonrotatably attachable to a driving portion of a housing of the device, and wherein the retainer cap assembly is nonrotatably attachable to a square drive shaft torque output assembly of the device. Advantageously the rotation angle indicating retainer assembly: is not connected with a device power source; is not used in a feedback loop between the device, the device power source and/or the fastener; is able to be zeroed once an operator wishes to observe an angle of rotation of the fastener; is of unitary construction; requires no loose parts or external implements to engage and secure a drive shaft to the drive head of the tool; reduces likelihood of tool failure during operation due to improper engagement of the drive shaft; and increases user safety during tool operation.