Basketball backboard elevator system
US5292118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1992 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Jan 31, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32336
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An elevator system for a basketball backboard comprising, in combination, a parallelogram frame and a backboard connected to the frame. A ratchet and pawl arrangement is connected between one of the arms and one of the vertical surfaces of the parallelogram frame so that a first vertical surface is freely movable upward relative to a second vertical surface and is held in a selected vertical position when the vertical lifting force applied to the first vertical surface is removed. The ratchet includes a plurality of ratchet teeth connected to and movable with one arm relative to the first vertical surface. The pawl is pivotally connected to the first vertical surface and disposed for engagement with the ratchet teeth to hold the first vertical panel in a selected vertical position when the vertical lifting force is removed. Also provided is a structure for biasing the pawl toward selective engagement with the ratchet teeth, the engagement depending upon the vertical position of the first vertical surface relative to the second vertical surface. A bell crank lever is pivotally connected to the first vertical surface and operatively associated with the ratchet and pawl arrangement, w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.