Truck bay door apparatus
US4574543A · kind A · utility
Inventor
Key dates
| Filing date | Aug 11, 1983 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Aug 11, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/008
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A door apparatus (10) is disclosed. The door apparatus (10) includes means for connecting to a door frame (20) of a building (11) suitable for housing a truck body assembly, e.g., a semi-trailer (13). The semi-trailer (13) includes a body (15) supported by wheels. The door apparatus (10) obstructs the space between the truck body (15) and the door frame (20) of the building, thereby permitting the truck body (15) to extend through the doorway while maintaining a weather-resistant and secure enclosure. In a preferred embodiment the door apparatus (10) includes left and right sections, (18) and (14) respectively, that are vertically hingedly connected to the door frame (20); an upper section (12) that is horizontally hinged to the door frame (20); and a lower section (16) that is vertically hinged to sections (18) and (14). Resilient body surface flaps (34) connected to the inner edges of the door sections (14), (18), ( 12) and (16) provide weather resistance and adaptability to truck bodies of varying sizes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.