Patent · US Active

Manhole cover hinge assembly

US8206058B2 · kind B2 · utility

67Cited by

6References

15Claims

0Family size

Assignee

East Jordan Iron Works, Inc. · US

Inventors

Kevin S. Vrondran · East Jordan, US
David E. Fuller · Ellsworth, US
Jeremy I. Johnson · Cambridge, GB

Key dates

Filing date	Jul 15, 2008
Grant date	Jun 26, 2012
Priority date	—
Expiry date	Jan 16, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE02D29/1463
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A manhole cover assembly includes a frame defining an access opening, first and second mounting posts extending from the frame, and a cover for covering the access opening. The cover includes first and second mounting recesses that pivotally receive the first and second mounting posts respectively, such that said cover is movable between an open position and a closed position by rotating the recesses about the posts. At least one of the recesses includes a locking groove that aligns with the post when the cover is moved to an open position to lock the cover in the open position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.