Collapsible safety guard for platform lift
US4091906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1977 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Feb 28, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F17/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A collapsible electric foot-toe guard is employed with a loading platform having electric controlled lift and descent movements, functioning as a safety device in the protection against unwitting protrusion of human limbs into the path of descent of the platform lift, said collapsible foot-toe guard being comprised of an outwardly depended contact plate moveably engaging a base support plate through hinge means to permit said contact plate with contact thereof to fold toward the base support plate, such folding movement effective to break a normally open, held closed electric limit switch circuit to arrest descent of the platform lift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.