BATIS DE COUVERCLE DE REGARD ET ANALOGUES

MANHOLE COVER FRAMES OR THE LIKE

Abrégé anglais

Improvement in a so-called "floating frame" for manhole covers or
the like. The frame (1) comprises a radially outwardly extending
flange (2) designed to be placed flush with the surface of the
road or the like in which the manhole or the like is disposed,
and a skirt (3) designed to extend axially into the upper part of
the manhole, formed by e.g. a concrete pipe (4) or into an
elongation of such pipe. In order to determine the frame level
with respect to the wall pipe (4) and/or for visual inspection of
the condition or quality of the surface material in which the
frame floats, the frame (1) is provided with at least one
aperture or cut-out (5, 15, 16) in the frame skirt (3), the frame
flange (2) and/or the cover seating (2') in the frame.

Revendications

CLAIMS
1. Improvement in a frame for covers for manholes, wells etc., the
frame comprising a radially outwardly extending flange designed to be placed
flush with the surface of the road or the like in which a manhole or the like
is
disposed, and a skirt designed to extend axially into an upper end portion of
the manhole or the like, characterized in that the frame is provided with one
or
more cutouts adapted to visually expose a part of a manhole pipe wall or other
material surrounding the manhole frame when the frame is in place.
2. Manhole cover frame according to claim 1, wherein the cutouts
are disposed in the frame skirt, in the frame flange and/or in a seating for a
cover associated with the frame.
3. Manhole cover frame according to claim 1, wherein at least one
of the cut-outs being in the form of an elongated slot in the skirt, the
elongated
slot extending axially in the skirt with respect to the frame axis.
4. Manhole cover frame according to claim 1, at least one of the cut-outs
being in the form of an elongated slot in the skirt, the elongated slots
extending helically in the skirt with respect to the frame axis.
5. Manhole cover frame according to claim 3 or claim 4, wherein the
slots are open at a lower edge of the skirt and extend over at least a lower
half
of the skirt.
6. Manhole cover frame according to claim 3 or claim 4, wherein the
slot is closed at a lower end of the frame, said lower end being located a
small
distance above a lower edge of the frame skirt, and an upper end of said slot
being located in an upper half of the frame skirt.

Description

A 2052962
MANHOLE COVER FRAME
The present invention relates to a frame for covers for manholes,
hells etc, the frame comprising a rad:ially outwardly extending
flange designed to be placed flush with the surface of the road
or the like in which the manhole or t:he like is disposed, and a
skirt designed to extend axially into the upper part of the
manhole, formed by e.g. a concrete pipe. Frames of this type is
also known as "floating frames", the frame floating with its
radially extending flange on and in the surrounding ground. When
the ground is given a new surface, e.g. by re-macadamizing, the
frame is lifted whereupon surfacing material is introduced below
the flange whereafter the frame is pressed down to new flushing
condition by means of a road roller or the like.
By such level adjustment of the frame it may from time to time be
difficu~t to ascertain how much of th.e wall pipe is overlapped
by the frame skirt and it is also difficult if not impossible to
ascertain the condition of the material on which the frame
floates. In order to overcome these dleficiencies it is suggested
through the present invention to provide the frame with at least
one aperture or cut-out, the aperture~(s) or cut-outs) to be
disposed in the frame skirt, in the frame flange and/or in the
seating of. the cover in the frame.
These and other features of the framE~ according to the invention
shall be described below with reference to the accompanying
drawing, in which Figs. 1, 2, 3 and ~~ exemplify four embodiments
of the invention, which embodiments may well be combined in
actual practice.
The drawings show a .Frame 1 for a ma~:lholde cover or the like, the
said frame having a. radially outwardly extending flange 2
designed to flush with a road surface or the like, as well as a
skirt 3 designed to protrude telescopically into a manhole wall
pipe 4 (cf Figs. 1 and 2) or to extend in the elongation of such
wall pipe which does itself not extend right up to the level of
the surface.
1

2052962
2
The frame skirt 3 is in accordance with this invention provided
with at least one aperture or cut-out, which may - as shown in
Figs. 1 and 2 - be in the form of a slot 5 extending axially in
the skirt 3. Such slot may however if desired extend helically
with respect to the frame axis. In Figs. 1 and 2 only one slot is
shown, but conveniently there are two or three such slots,
circumferentially separated along they skirt.
In the embodiment shown in Fig. 1 the slot 5 extends right down
to the lower edge of the skirt 3 whereas it may, as exemplified
in Fig. 2 be in the form of an elongated aperture ending a short
distance above the lower frame skirt edge.
By means of the slot or slots 5 it will be possible at any time
to determine the level of the frame with respect to the upper
edge of the manhole pipe wall. Furthermore, the slot or slots
makes it possible to visually inspect. the condition or quality of
the surface material on which the frame floates.
25
In order to enhance the possibility of such visual inspection it
has also been suggested in this invention to provide one or more
apertures 15, 16 in the frame flange 2 (cf Fig. 3) and/or i.n the
manhole cover seating 2' (cf Fig. 4).
It will be obvious to the man skilled in the art, once having
been shown this idea, to exploit the embodiments in various
combinations, e.g. by providing slogs or elongated apertures in
the skirt as well as inspection apertures in the flange and/or
cover seating.

Dessin représentatif