Sliding door locking device
US3998484A · kind A · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Jan 10, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/314
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides a locking device for railway freight car doors including a wedge-shaped locking pin engageable with the hasp for maintaining the door tightly closed, the wedge being so mounted that it need not be withdrawn from locking position to permit release of the lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.