AU724047B2

AU724047B2 - A gully grate

Info

Publication number: AU724047B2
Application number: AU15147/97A
Authority: AU
Inventors: Ronald E Graham
Original assignee: RONALD E GRAHAM HOLDINGS Pty L
Current assignee: RONALD E GRAHAM (HOLDINGS) Pty Ltd
Priority date: 1996-03-07
Filing date: 1997-03-06
Publication date: 2000-09-07
Anticipated expiration: 2017-03-06
Also published as: AU1514797A

Description

S F Ref: 366113

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT N..aA

ORIGINAL

0 Name and Address of Applicant: Address for Service: Ronald E Graham (Holdings) Pty Limited 127-153 Rookwood Road Yagoona New South Wales 2199

AUSTRALIA

Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Invention Title: A Gully Grate ASSOCIATED PROVISIONAL [31] Application No(s) PN8511 APPLICATION DETAILS [33] Country

AU

[32] Application Date 7 March 1996 The following statement is a including the best method of full description of this invention, performing it known to me/us:- 5815 1 A Gully Grate Technical Field The present invention relates to gully grates.

Background of the Invention Gully grates are provided above drainage pits. Previous gully grates have included a generally "U-shaped" frame which pivotally supports a grating mat. The rear edge of a grating mat is unsupported.

It is a disadvantage of the above discussed gully grates, that the mat will frequently sag under heavy loads.

Object of the Invention It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.

Summary of the Invention There is disclosed herein a gully grate comprising: :i 15 a frame of generally "U-shaped" configuration so as to provide a base from which there extends a pair of legs; a grating mat pivotally supported adjacent one of the legs for pivoting movement about an axis generally normal to the base; and reinforcing means fixed to one longitudinal edge of the mat and extending 20 downwardly therefrom when the mat is generally oriented horizontally, the reinforcing means having its major horizontal direction of extension extending between the two legs and perpendicular to said pivot axis when the mat is horizontally oriented, so that the reinforcing means is positioned between the two legs.

Brief Description of the Drawings 25 A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings wherein: Figure 1 is a schematic end elevation of a gully grate; Figure 2 is a schematic top plan view of the gully grate of Figure 1; Figure 3 is a schematic side elevation of the gully grate of Figure 1; Figure 4 is a schematic sectioned end elevation of the gully grate of Figure 2 sectioned along the line A-A; Figure 5 is a schematic top plan view of the grating mat employed in gully grate of Figure 1; SFigure 6 is a schematic side elevation of the mat of Figure 35 Figure 7 is a schematic sectioned end elevation of the mat of Figure [W )sectioned along the line A-A of Figure Q ~vT [R:\LIBTT]00878.doc:KH 2 Figure 8 is a schematic top plan view of a frame employed in the gully grate of Figure 1; and Figure 9 is a schematic side elevation of the frame of Figure 8.

Detailed Description of the Preferred Embodiment In the accompanying drawings there is schematically depicted a gully grate The gully grate includes a main frame 11 which would typically have portions embedded in or supported on a concrete pit member. For example, in this embodiment the frame 11 is provided with bar projections 12 which would be embedded in the concrete forming the pit member.

The frame 11 is of a "U-shaped" configuration so as to have a base 13 from which there projects a pair of generally parallel and coextensive legs 14. The base 13 :*oooo and legs 14 would be provided with the projections 12.

The base 13 would be formed of a hollow metal section while each of the legs 14 S•"would have an "L-shaped" transverse cross section and terminate with a flange 15. The base 13 would be provided with a pivot pin 16 as would the adjacent flange 15, which pivot pins 16 pivotally support the grating mat 17. The grating mat 17 includes an end member 18 and a transverse reinforcing member 19. The mat 17 further includes a rear edge member 20. More particularly, the grating mat 17 would be provided with longitudinal and transverse grating members 21. When the grating mat 17 is in position 20 pivotally supported by the frame 11, the member 20 extends between the extremities of S. the legs 14.

The grating mat 17 is provided with a reinforcing 22. The reinforcing extends •.downwardly from the mat 17 and has its major direction of horizontal extension .0 between the flanges 15 of the two legs 14. In this embodiment the reinforcing 22 is of a triangular configuration so as to taper from a central maximum height at the apex 23 to a zero height adjacent the flanges 15. More particularly, the reinforcing 22 would consist of a metal web 25 to which a transverse flange 24 would be secured.

In the above described preferred embodiment the reinforcing 22 aids in stiffening the edge of the mat 17 which extends between the two flanges IN:\LIBTT]OO878:exc

Claims

1. A gully grate comprising: a frame of generally "U-shaped" configuration so as to provide a base from which there extends a pair of legs; a grating mat pivotally supported adjacent one of the legs for pivoting movement about an axis generally normal to the base; and reinforcing means fixed to one longitudinal edge of the mat and extending downwardly therefrom when the mat is generally oriented horizontally, the reinforcing means having its major horizontal direction of extension extending between the two legs and perpendicular to said pivot axis when the mat is horizontally oriented, so that the reinforcing means is positioned between the two legs.

2. The gully grate of claim 1, wherein said legs are generally parallel and coextensive.

3. The gully grate of claim 1 or 2, wherein said reinforcing means is of a 15 triangular shape so as to have a maximum height at a approximate the middle of the mat and tapers towards the two legs.

4. The grate of claim 1, 2 or 3, wherein the reinforcing means is a web extending between the two legs and further includes a transverse flange adjacent the central portion of the web.

5. A gully grate substantially as hereinbefore described with the reference to the accompanying drawings. Dated 19 June 2000 Ronald E Graham (Holdings) Pty Limited Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON oooo [R:\LBT1100878.doc:KEH