Adjustable hinge device
US5039247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32557
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthopedic and orthotic hinge having a hinge body that includes two spaced, parallel plates with two hinge arm carriers having end portions pivotally mounted between the plates for movement in directions of flexion and extension. The end portions of the hinge arm carriers have peripheral teeth that respectively engage two toothed slide members. Such members are slidably disposed between the plates, preferably carried in grooves formed therein, and are independently movable with respect to each other when the hinge arm carriers are pivoted. First and second variable stops are provided by the hinge for limiting the extent of sliding movement in opposite directions of the two slide members, thereby restricting extension and flexion of the hinge arm carriers while at the same time permitting true bi-pivotal operation of the hinge. In one embodiment, the variable stops are offset from the midplane of the hinge body and the toothed slide members have extensions engageable with such stops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.