Ratchet tool apparatus
US11420306B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 16, 2018 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Apr 19, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/52
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ratchet tool apparatus including an elongated tubular shaft member having a drive socket built into the shaft at a distal end and having a worm screw gear attached to the shaft at a proximate end, a worm wheel having mating teeth members that mesh with the worm screw gear, a socket receiving orifice for receiving one of a plurality of socket attachments, a switch mechanism that is manually switched between a left directional mode of operation, a right directional mode of operation and a free spin mode of operation, the switch mechanism including a cover; a plurality of sealed bearings attached to the shaft member to stabilize the motion of the shaft member, and a housing unit having a cavity in which is mounted the elongated shaft member, the worm wheel, the worm screw gear, the socket receiving orifice, the switch mechanism, and the plurality of sealed bearings. The housing unit includes a handle region and a head region, the handle region has a L shape and includes a lever member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.