Method of using a trench forming assembly having removable pin anchoring mechanism
US6533497B2 · kind B2 · utility
8Cited by
22References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/598
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An assembly for forming a trench comprising a frame having two elongated members that define a support surface and at least one opening. The assembly also includes a removable grate that is disposed on the support surface and includes a hook that is disposed proximate the opening defined by the elongated frame members. The assembly also includes a removable pin that is slidably inserted through an opening defined by an elongated member and is mechanically engaged by the hook of the grate to secure the grate to the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.