GB2120711A - Road surface speed ramps - Google Patents

Abstract

An anti-speed road ramp unit consists of a rubber block (1) with an upper surface having a flat centre portion (2) and end ramps (3 and 4), a transverse groove (10) in the underside, light reflecting means (19-21) embedded in the end ramps and grooves in the upper surface for grip and drainage. The groove (10) is shaped to grip a scaffold pole coupling adjacent blocks in a row. Integral suction cups are provided in the base to assist road grip, and vertical holes 17, 18 are provided for anchor bolts. <IMAGE>

Description

SPECIFICATION Portable anti-speed ramps This invention relates to portable anti-speed ramps for roads, sometimes known as "sleeping policemen" and particularly relates to a unitary or modular construction.

In its broadest aspect the present invention seeks to provide a portable anti-speed ramp formed of a series of blocks of resilient material each having a substantially flat base and a generally convex upper surface and means to join the blocks one to another or to a road surface.

Also according to the present invention a portable anti-speed ramp as specified above incorporates one or more of the following features, singly or in combination: (i) a flat central upper surface portion with sloping, ramped ends; (ii) grooves provided in the upper surface for grip and drainage; (iii) suction cups provided in the base to assist road grip; and (iv) light reflecting means incorporated in each block.

The above and other features of the invention are illustrated by way of example in the drawings wherein: Fig. 1 is a perspective view of a road ramp block in accordance with the invention, Fig. 2 is a side elevation of the ramp block of Fig. 1, Fig. 3 is an under plane of the ramp block of Fig. land Fig. 4 is a perspective sketch illustrating the assembly of a series of ramp blocks.

As shown by Figs. 1 to 3, a unit or module for an anti-speed road ramp consists of a block 1 of high impact rubber moulded to have a generally rectangular plan with a convex upper surface having a flat centre portion 2 with sloping end ramps 3 and 4 each tapering to a thin edge 5 and 6 respectively. The block 1 has plain vertical sides 7 and 8.

The underside 9 has a central transverse groove 10 shown (Fig. 2) to have slightly tapering side walls 11 and 12. Regularly spaced about this groove 10 are four moulded circular suction cups 13,14, 15 and 16.

A pair of vertical bolt holes 17 and 18 are provided, one either side of the groove 10 and between associated pairs of suction cups 13, 1 5 and 14, 1 6 respectively.

The entire upper surface of the block is shown to have deep V-grooves and each end ramp 3, 4 has embedded therein a pair of cats eyes (RTM) 19, 20 and 21,22; the eyes acting to reflect generally horizontally.

The central groove 10 is of a size to accept a standard scaffolding pole 23 to enable a series of blocks to be joined one to the other, as illustrated in Fig. 4. The blocks are sufficiently weighty for such a series to remain in place on a road, assisted by the action of the suction cups. The bolt holes are provided to enable a more permanent installation by bolting some or all of the blocks to a road, using standard bolts. The scaffolding pole serves to align the blocks one with another and can also form a conduit for pipes, cables etc.

The height and shape of the blocks is designed to bring vehicle speeds safely down to a required level. The blocks visibility at night or in semidarkness is improved by the cats eyes (RTM) and daytime visibility is improved by alternating standard black coloured blocks with similar blocks covered with a yellow surface coating.

The V grooves are provided to give extra grip for passing vehicles and for surface drainage.

Claims

1. An anti-speed road ramp unit consisting of a block of resilient material moulded to have a substantially flat base of generally rectangular plan shape with a convex upper surface having a flat centre portion with sloping end ramps tapering to a thin edge respectively, the underside of the block having central transverse groove means for joining the block to similar blocks, light reflecting means embedded in the end ramps to reflect light generally horizontally and grooves provided in the upper surface of the block for grip and drainage.

2. An anti-speed road ramp unit according to claim 1, in which the central transverse groove in the block has slightly tapering side walis to accept a standard scaffolding pole for joining one block to another.

3. An anti-speed road ramp unit according to claim 1 or 2, in which the block has bolt hole means for joining the block to a road surface.

4. An anti-speed road ramp unit according to claim 1, 2 or 3, in which suction cups are provided in the base to assist road grip.

5. An anti-speed road ramp unit according to claim 1 and having light reflecting means embedded as shown by Fig. 1 of the accompanying drawings.

6. An anti-speed road ramp unit according to claim 2 and joined to other such units by a scaffold pole as shown by Fig. 4 of the accompanying drawings.

7. An anti-speed road ramp unit according to claim 1 and having V-grooves in the upper surface of the block as shown by Fig. 1 of the accompanying drawings.

8. An anti-speed road ramp unit according to claims 3 and 4 and having bolt holes and suction cups as shown by Figs. 1 and 3 of the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Portable anti-speed ramps This invention relates to portable anti-speed ramps for roads, sometimes known as "sleeping policemen" and particularly relates to a unitary or modular construction. In its broadest aspect the present invention seeks to provide a portable anti-speed ramp formed of a series of blocks of resilient material each having a substantially flat base and a generally convex upper surface and means to join the blocks one to another or to a road surface. Also according to the present invention a portable anti-speed ramp as specified above incorporates one or more of the following features, singly or in combination: (i) a flat central upper surface portion with sloping, ramped ends; (ii) grooves provided in the upper surface for grip and drainage; (iii) suction cups provided in the base to assist road grip; and (iv) light reflecting means incorporated in each block. The above and other features of the invention are illustrated by way of example in the drawings wherein: Fig. 1 is a perspective view of a road ramp block in accordance with the invention, Fig. 2 is a side elevation of the ramp block of Fig. 1, Fig. 3 is an under plane of the ramp block of Fig. land Fig. 4 is a perspective sketch illustrating the assembly of a series of ramp blocks. As shown by Figs. 1 to 3, a unit or module for an anti-speed road ramp consists of a block 1 of high impact rubber moulded to have a generally rectangular plan with a convex upper surface having a flat centre portion 2 with sloping end ramps 3 and 4 each tapering to a thin edge 5 and 6 respectively. The block 1 has plain vertical sides 7 and 8. The underside 9 has a central transverse groove 10 shown (Fig. 2) to have slightly tapering side walls 11 and 12. Regularly spaced about this groove 10 are four moulded circular suction cups 13,14, 15 and 16. A pair of vertical bolt holes 17 and 18 are provided, one either side of the groove 10 and between associated pairs of suction cups 13, 1 5 and 14, 1 6 respectively. The entire upper surface of the block is shown to have deep V-grooves and each end ramp 3, 4 has embedded therein a pair of cats eyes (RTM) 19, 20 and 21,22; the eyes acting to reflect generally horizontally. The central groove 10 is of a size to accept a standard scaffolding pole 23 to enable a series of blocks to be joined one to the other, as illustrated in Fig. 4. The blocks are sufficiently weighty for such a series to remain in place on a road, assisted by the action of the suction cups. The bolt holes are provided to enable a more permanent installation by bolting some or all of the blocks to a road, using standard bolts. The scaffolding pole serves to align the blocks one with another and can also form a conduit for pipes, cables etc. The height and shape of the blocks is designed to bring vehicle speeds safely down to a required level. The blocks visibility at night or in semidarkness is improved by the cats eyes (RTM) and daytime visibility is improved by alternating standard black coloured blocks with similar blocks covered with a yellow surface coating. The V grooves are provided to give extra grip for passing vehicles and for surface drainage. Claims

1. An anti-speed road ramp unit consisting of a block of resilient material moulded to have a substantially flat base of generally rectangular plan shape with a convex upper surface having a flat centre portion with sloping end ramps tapering to a thin edge respectively, the underside of the block having central transverse groove means for joining the block to similar blocks, light reflecting means embedded in the end ramps to reflect light generally horizontally and grooves provided in the upper surface of the block for grip and drainage.

2. An anti-speed road ramp unit according to claim 1, in which the central transverse groove in the block has slightly tapering side walis to accept a standard scaffolding pole for joining one block to another.

3. An anti-speed road ramp unit according to claim 1 or 2, in which the block has bolt hole means for joining the block to a road surface.

4. An anti-speed road ramp unit according to claim 1, 2 or 3, in which suction cups are provided in the base to assist road grip.

5. An anti-speed road ramp unit according to claim 1 and having light reflecting means embedded as shown by Fig. 1 of the accompanying drawings.

6. An anti-speed road ramp unit according to claim 2 and joined to other such units by a scaffold pole as shown by Fig. 4 of the accompanying drawings.

7. An anti-speed road ramp unit according to claim 1 and having V-grooves in the upper surface of the block as shown by Fig. 1 of the accompanying drawings.

8. An anti-speed road ramp unit according to claims 3 and 4 and having bolt holes and suction cups as shown by Figs. 1 and 3 of the accompanying drawings.