Adjustable knockdown tray assembly
US4628625A · kind A · utility
Inventor
Key dates
| Filing date | Mar 18, 1986 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Mar 18, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47F5/118
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An improved knockdown tray assembly which is capable of supporting heavier loads than the tray assembly of my companion co-pending patent application Ser. No. 639,045, using paperboard or cardboard trays and supporting members. The tray supporting members are of a new construction and are formed of inverted U-shaped beams which are provided at the center of each beam with interfitting pivot structure. The interfitting pivot structure is formed by providing a pin in a shallow wall molding on the bottom U-beam and a socket which has a much greater elevation on the upper U-beam, the shallow beam and deep socket improving the stability of the interfitting pivot portion of the beams thereby preventing any unintended disengagement of the pivot and socket element. Also new trays are utilized in which the circular openings which are ordinarily provided within the corners and at the bottom of each tray to accommodate the circular posts are modified to provide trays which are longer in dimension than in my co-pending application Ser. No. 639,045. The placement of the circular openings for the sockets is determined by the dimensions of the interfitted U-beams. Thus, each tray has a shelf port…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.