Gate locking device
US4796385A · kind A · utility
Inventor
Key dates
| Filing date | Aug 5, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic gate opener lock. The gate opener lock has a locking bolt which is moved between locked and unlocked positions by the movement of swing arm of an automatic gate opener. To prevent movement of the locking bolt toward its locked position before the gate is closed, springs are arranged for resisting movement in that direction. The springs have a combined resistive force greater than the force required to move the gate. Only when the gate is closed, and the force from the swing arm may no longer be dissipated through gate movement, is the combined force of the springs overcome, and the locking bolt moved into the locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.