Manhole insert and tether apparatus and method

Static structures (e.g. – buildings) – With entrance for persons or objects in horizontal or... – With additional enclosure structure; e.g. – manhole

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

52 19, 70164, 70 49, 292237, 404 25, 404 26, E02D 2914

Patent

active

059668768

ABSTRACT:
A watertight manhole insert and tether apparatus designed to prevent rainwater from entering sanitary sewer or other systems through a manhole closed by a manhole cover. The manhole insert is located beneath the manhole cover and is connected directly to the manhole by a tether apparatus mounted in the manhole, to plug the manhole, prevent theft of the manhole insert and deny access to the manhole. The manhole insert is characterized by a pan-shaped insert body having a curved, flat or ribbed insert bottom and one or more pressure-relief valves, one or more lift straps and an upward-standing, sloping or perpendicular side wall fitted with an outwardly-extending top rim for engaging a shoulder shaped in the manhole to support the manhole insert in the manhole. One end of a flexible stainless steel tether is connected to the manhole insert and the opposite end extends through a pair of tether mount loops fixed to the manhole wall and then through a grommet in the insert bottom and subsequently through a locking device. According to the method of this invention when the manhole insert is placed in the manhole, the tether is tightened in the tether mount loops as it is pulled upwardly through the grommet and the locking device is slipped along the tether above the grommet and locked at the insert body to seat the manhole insert on the manhole shoulder and prevent both theft of the manhole insert and access to the manhole.

REFERENCES:
patent: 374458 (1887-12-01), Davis
patent: 606554 (1898-06-01), Jacobs
patent: 1384712 (1921-07-01), Shanley
patent: 1959171 (1934-05-01), Mayer
patent: 2576353 (1951-11-01), Nelson
patent: 3046853 (1962-07-01), Legendre
patent: 3490177 (1970-01-01), Perrion
patent: 3712009 (1973-01-01), Campagna
patent: 3920347 (1975-11-01), Sauriol et al.
patent: 4067659 (1978-01-01), Campagna, Jr.
patent: 4101154 (1978-07-01), Kagstrom
patent: 4123184 (1978-10-01), Whitlock
patent: 4171851 (1979-10-01), Scruggs
patent: 4649674 (1987-03-01), Gaul et al.
patent: 4650365 (1987-03-01), Runnels
patent: 4915336 (1990-04-01), Handy
patent: 4919564 (1990-04-01), Neathery
patent: 5070712 (1991-12-01), Fox
patent: 5197307 (1993-03-01), Abbott, Jr.
patent: 5328291 (1994-07-01), Wisniewski

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Manhole insert and tether apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manhole insert and tether apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manhole insert and tether apparatus and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2042320

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.