Large powered jack
US10414223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Oct 30, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F3/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Provided is a jack assembly that may include a first tube having a bearing and a second tube being telescopingly engaged with the first tube. The second tube may be attached to a nut therein. A motor assembly may be attached to the first tube. An elongated screw may be in rotatable communication with the motor assembly, the bearing, and the nut wherein operation of the motor assembly rotates the elongated screw such that the nut telescopingly translates along the elongated screw and the second tube translates relative to the first tube. The nut may be a recirculating ball nut assembly having a housing with at least one track and a plurality of ball bearings. The threads and the track may be configured to receive the plurality of ball bearings therein such that as the elongated screw rotates, the housing of the recirculating ball screw translates along the elongated screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.