Locking device for roadway manhole cover

Details Locking device for roadway manhole cover Locking device for roadway manhole cover

1975-03-26

1976-11-30

Moore, Richard E.

Closure fasteners

Clamps

Screw and nut

E05C 1918

Patent

active

039945200

ABSTRACT:
A manhole assembly includes a cover rotatable within a frame to lock the cover therein, the cover being formed with at least one projection extending outwardly of its periphery. The frame is formed with at least one anchorage, and a rod is threaded at one end thereof and has an anchoring formation at the other end thereof. The rod may be engaged between the projection and the anchorage and a nut may be screwed on the threaded end of the rod to move the projection towards the anchorage and lock the cover in the frame.

REFERENCES:
patent: 1384712 (1921-07-01), Shanley
patent: 2663268 (1953-12-01), Ahnell
patent: 2915330 (1959-12-01), Verbiar
patent: 3394836 (1968-07-01), Millard
patent: 3508363 (1970-04-01), Crivello et al.

Affiliated with

Also associated with

Rating

Locking device for roadway manhole cover does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Locking device for roadway manhole cover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Locking device for roadway manhole cover will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1050728