US 11,077,543 B2 · Apparatus for tightening threaded fasteners

Abstract

The present invention seeks to protect Applicant's HYTORC® LITHIUM SERIES™ Torque Gun Tools for tightening and/or loosening of industrial threaded fasteners. Such tools include: a drive input and output assembly; a turning force multiplication assembly; a dual drive output and reaction assembly; and a yoke-style shifting assembly for any torque mode from lower and/or higher resistance and/or speed. A preferred embodiment includes an electric motor of the drive input and output assembly powered by a battery pack. Advantageously, the yoke-style shifting assembly: improves and simplifies design and operation of shifting; reduces tool size and cost; and increases tool portability, efficiency, reliability and repeatability, all without sacrificing Applicant's many innovations in hand-held, multispeed torque intensifying tools.

Claims19

Dependent claims

A torque power tool for tightening and/or loosening of an industrial threaded fastener including:

a motor to generate a turning force;
a drive to transfer the turning force;
a turning force multiplication mechanism assembly having one or more gear stages;
a yoke-style shifter assembly to shift the tool between a higher speed/lower torque (HSLT) mode and a lower speed/higher torque (LSHT) mode;
wherein in during the HSLT mode, a shifter ring gear of the yoke-style shifter assembly engages an external carrier locking gear of a first gear stage;
and
during the LSHT mode, the shifter ring gear engages an external mating stationary gear that is grounded to a drive tool housing via a stationary ring gear adaptor.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/324,792Filed 8 Aug 2017 · us provisional application

Priority

8 Aug 2016

Published

US 2019/0224836 A125 Jul 2019

Granted

3 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B25F 5/001
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for:…
B25B 21/00
Portable power-driven screw or nut setting or loosening tools
B25B 21/008
Portable power-driven screw or nut setting or loosening tools; ; Attachments for drilling apparatus serving the same purpose: with automatic…
B25B 23/0078
Details of, or accessories for, spanners, wrenches, screwdrivers: reaction arms

Apparatus for tightening threaded fasteners

Life of this patent

Apparatus for tightening threaded fasteners

Life of this patent

Abstract

Claims19