Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1993-09-01
1994-09-06
Britts, Ramon S.
Road structure, process, or apparatus
Pavement
Vault cover-closure
404 25, 52 20, 52 21, E02D 2914
Patent
active
053442539
ABSTRACT:
An adjustable manhole cover support frame that includes a base unit, a top support unit telescopically arranged on the base unit and screw jacks interconnecting the two units permitting selectively adjusting the relative telescopic position of the top unit on the base unit. The base unit has an open ended sleeve projecting upwardly from a flange utilized to secure the base unit to the top end of a manhole vertical conduit. The top support unit has a top annular plate from which depends three cylindrical walls defining a first outer cavity telescopically receiving the sleeve of the base unit and inwardly therefrom a second cavity with holes in the bottom to receive the upper ends of threaded bolts that provide the screw jacks for adjustment.
REFERENCES:
patent: 1076386 (1913-10-01), O'Day
patent: 1165044 (1915-12-01), Tyler
patent: 2930295 (1960-03-01), Hale
patent: 3392640 (1968-07-01), Zeile
patent: 3611889 (1971-10-01), Levinson
patent: 3773428 (1973-11-01), Bowman
patent: 3858998 (1975-01-01), Larsson et al.
patent: 4075796 (1978-02-01), Cuozzo
patent: 4149816 (1979-04-01), Piso
patent: 4197031 (1980-04-01), Hild
patent: 4273467 (1981-06-01), Cronk
patent: 4281944 (1981-08-01), Bowman
patent: 4925337 (1990-05-01), Spiess et al.
patent: 5054956 (1991-10-01), Huang
Britts Ramon S.
Johnson Stanley E.
O'Connor Pamela Anne
LandOfFree
Adjustable 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 Adjustable manhole cover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable manhole cover will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1325784