Method of increasing the range of controlled movement of a door opened by a treadle operated door opening assembly, and a treadle operated door opening assembly
US5540012A · kind A · utility
Inventor
Key dates
| Filing date | Aug 25, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Aug 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65F1/1442
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of increasing the range of controlled movement of a door opened by a treadle operated door opening assembly is described, along with a treadle operated door opening assembly constructed in accordance with the teachings of the method. The method includes the step of mounting a contact member which projects from the first face of the door adjacent to the hinge edge and the bottom edge. With this modification when a person treads upon a radially extending pedal a shaft rotates causing a point of contact between the arm and the door to move sequentially from a first position substantially parallel to the first face of the door to a second position engaging the contact member substantially perpendicular to the first face of the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.