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0 Publication number 0 335 591 

A1 



® EUROPEAN PATENT APPLICATION 



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V*y MppllCauOn nUfTlDoi. 


(£) Irrt Ci 4 - E01 F 9/01 


0 Date of filing: 23.03.89 
• 




0 Priority: 24.03.88 GB 8807036 


© Applicant; SWINTEX LIMITED 


Derby Works Manchester Road 


© Date of publication of application: 


Bury Lancashire BL9 9NX(GB) 


r\A Hrt oo anll^flri QQMn 
04. 10.09 aUtletin oa/HU 






© Inventor Schofleld, Barrie 


© Designated Contracting States: 


151 A Manchester Road 


AT BE CH DE ES FR GB GR IT L! LU NL SE 


Heywood Lancashire(GB) 




Inventor: Wallwork, Peter 




15 Croyde Close 




Harwood Bolton, BL2 4HJ Lancashire(GB) 




0 Representative: Low, Peter John et a! 




WILSON, GUNN & ELLIS 41 Royal Exchange 




Manchester, M2 7BD(GB) 



® Marker post 



0 A marker post which can be quickly installed at 
the edge of a road comprising a flexible body (10) of 
part circular cross-section with an elongated metal 
base (12) preferably of T-shaped cross-section. To 
secure the post In place the body Is flexed away 
from the base so that the base can be driven into 
the ground with a hammer. When the body is re- 
leased it returns to an upright disposition. 



16 



Frd5 




Europalsches Patentamt 
European Patent Office 
Office europeen ties brevets 




05 
If) 

LA 
CO 
00 



Q. 

LU 



Xerox Copy Centre 



1 EP 0 335 591 A1 2 

MARKER POST 



This invention relates to a marker post and 
more particularly, but not exclusively a marker post 
for roads. 

Marker posts for roads, commonly- known as 
verge markers or wayside markers are of two main 
types, rigid and flexible. In order to install the rigid 
posts they can be driven into the ground in the 
manner of a pile. For flexible posts special tools 
are needed if the post is to be driven into the 
ground without breaking the post Although the 
posts themselves are not particularly expensive 
these speciaf tools are relatively much more costly 
so that the overall cost of installation is high. An 
alternative to the use of special tools is to dig a 
hole for each post and fix the post in place with 
concrete poured into the hole. These procedures 
are time consuming and labour intensive. As a 
consequence the overall cost of installation is also 
expensive. 

The present invention has been made from a 
consideration of these problems. 

According to the invention there is provided a 
marker post comprising a flexible body portion and 
a rigid base portion, the flexible body portion being 
adapted to be flexed sufficiently to expose the top 
of the rigid base. 

In a preferred embodiment of the Invention the. 
body is made of flexible plastics material and the 
base is made of metal. The plastics material and 
the body shape should be of the kind which, for the 
purpose of installation, can be bent or flexed suffi- 
ciently to expose the tip of the metal base without 
permanent set so that when unrestrained the body 
will return to its normal position. Examples of 
shapes which are suitable are disclosed in Eu- 
ropean Patent 0103578. 

The metal base is preferably of profiled section 
for example T-shaped, U-shaped, L-shaped, of box 
section or other suitable cross-section. The base 
may be unprofiled, for example of circular cross- 
section. The metal base is fixed to the lower end of 
the flexible body at a location below the top of the 
base. The top of the flexible body can be flexed 
away from the base to expose the top of the base 
which can then be driven into the ground by suit- 
able means such as a hammer. When the flexible 
body is unrestrained it returns to Its normal disposi- 
tion. 

A specific embodiment of the invention will 
now be described by way of example with refer- 
ence to the accompanying drawings in which;- 
Frg.1 is a rear elevation of a marker post 
. Fig.2 is a vertical section through the post of 
Rg.1: 

Fig.3 is a section on the line Ill-ill of Flg.1; 



Fig.4 is an under plan view of the post of 
Fig.t; and 

Fig.5 is a side elevation of the post of Fig.1 
with the body flexed to expose the base. 

5 

Referring to the drawings the marker post com- 
prises a body 10 preferably of flexible plastics such 
as a polypropylene which can be flexed without 
permanent set and which does not become brittle 

w at low temperatures. The body is of part circular 
cross section and preferably of gradually reducing 
lateral arcuate extent from bottom to top. in the 
embodiment illustrated the bottom of the body ex- 
tends laterally over slightly more than a semi-circle 

75 (Fig.4) and at Its top the body extends over sOghtly 
less than a semi-circle (Fig.3), The lowermost part 
of the body is of tapered form. 

The base 12 of the post comprises a rigid 
elongate member, preferably of metal. The cross- 

20 section of the base in the embodiment illustrated is 
T-shaped. Other profiles can be used for example 
U-section or box section. L-shaped cross-section 
bases are not always entirely satisfactory however, 
as they may twist in use. 

25 The base is fixed to the concave side of the 
body by appropriate fasteners such as bolts or 
rivets 14 so that the longitudinal axis of the base is 
substantially aligned with the centre line of the 
body. The base is secured such that about half of 

30 its length projects below the bottom of the body. 
The uppermost fastener is located a short distance 
below the top of the base. A barb 16 is provided 
adjacent the bottom end of the base. 

In use the body can be bent away from the 

35 base as illustrated in Rg.5. The base can then be 
driven into the ground using a simple tool such as 
a hammer or mallet. When the body is released it 
springs back to the upright position. The whole 
operation takes a few minutes and requires no 

40 special equipment. The barb prevents the post 
from being pulled out of the ground. 

When the ground is very hard, for example in 
rocky outcrops, a hole may be preformed as by 
drilling. Provided that the hole has a diameter 

45 which is about the same as the maximum cross- 
sectional dimension of the base 12. insertion of the 
base into the hole can be accomplished quite read- 
ily and the base will be held firmly in the hole. 
Even if the hole is larger than the cross section of 

so the base the barb will hold the post in place. The 
costs of this kind of installation do not greatly 
exceed the costs of installing the marker post of 
the Invention in softer ground. 

The invention is not restricted to the above 
described embodiment Many variations and modi- 



2 



EP r G 335 59*1 A1 



fications can be made. Although the specific em- 
bodiment Just described relates to a marker post 
for the edges of roads it is to be understood that 
the post of the invention can be used in many 
other places and for various purposes. The post s 
can carry some reflective material so that It will be 
noticeable at night when light falls onto It. Mar- 
kings, whether reflective or not, can be applied to 
the post to give Information, for example direction, 
distance, hazard warning, rights of way and the 10 
like. The post can be used to mark the line of 
footpaths, bridle paths or tracks and it can be used 
to mark the line of buried services such as gas, 
water, electricity and so on. 

Although reference is made to the body of the 75 
post being made of plastics other flexible materials 
can be used for example glass or carbon fibre 
reinforced plastics and materials made from carbon 
fibre. 

20 

Claims 

1. A marker post comprising a flexible body 
portion and a rigid base portion, the flexible body 2s 
portion being adapted to be flexed sufficiently to 
expose the top of the rigid base. 

2. A marker post as claimed in Claim 1, 
wherein the body portion is comprised of plastics 
material and is shaped such that it can be flexed at 30 
least to expose the top of the base without perma- 
nent set 

3. A marker post as claimed in Claim 1 or 
Claim 2, wherein the body is of part circular cross- 
section. 35 

4. A marker post as claimed in any preceding 
claim, wherein the body is of gradually reducing 
lateral arcuate extent from bottom to top. 

5. A marker post as claimed in any preceding 
claim, wherein the base comprises a rigid elongate 40 
member. 

6. A marker post wherein the base is of profiled 
section preferably of T-section, U-section, L-section 
or box section. 

7. A marker post as claimed In any preceding 45 
claim, wherein the body is fixed to the base at one 

or more locations below the top of the base. 

8. A marker post as claimed in any preceding 
claim, wherein at least a part of the surface of the 
body is reflective. so 

9. A marker post as claimed in any preceding 
claim wherein marking Is applied to at least part of 
the surface of the body. 



55 



3 



& 0 335 *591 A1 




European Patent 
Office 



EUROPEAN SEARCH REPORT 



Application Namber 



EP 89 30 2906 



DOCUMENTS CONSIDERED TO BE RELEVANT 



Category 



Citation of document with indication, where appropriate, 
of relevant passages _ 



Relevant 
to claim 



CLASSIFICATION OF THE 
APPLICATION Ont. a 4) 



Y 
A 

Y,D 



US-A-4 298 292 (SWEENEY) 
* Column 2, lines 
32-36,40-48,52-57,67,68; column 3, 
1 1 nes 1-6, 17, 18,20-22,34-38, 55-60; 
figures 1-3, 4A * 



LU-A- 82 466 (TLB PLASTICS) 
* Page 5, lines 27-31; page 6, lines 
1-6,10-12; page 7, lines 
13,14,21,22,24-27,31,32; page 8, lines 
1,2,7-12,17-19; page 9, lines 
6-9,13-15,26-29 * 



WO-A-8 301 972 (BJoRLUND) 
* Page 1, lines 6,7,9-15; page 2, lines 
11-13,15-20; page 3, lines 24-31; page 
4, lines 24-35; page 5, .lines 
18-23,28-31; page 5, line 37 - page 6, 
line 1; figures 1-8,11 * 



US-A-2 030 623 (EGGLESTON) 
* Page 1, left-hand column, lines 
13-20; page 1, right-hand column, lines 
10-15,35-45; page 2, left-hand column, 
lines 1,2; figures 3,4,7 * 



-/- 



The present search report has been drawn up for all claims 



1,2,5-9 



3,4 

1,5-7,9 



E 01 F 9/01 



2-4 
8 

2-4 



TECHNICAL FIELDS 
SEARCHED (Int CL4) 



8,9 

1,5,6 
8,9 



E 01 F 



Pitta of uarzh 

THE HAGUE 



Date of completion of tim search 

30-06-1989 



SCHUMAN R. 



CATEGORY OF CITED DOCUMENTS 

. X : particularly relevant If taken alone 
Y : particularly relevant If combined whh another 

document of the same category 
A : technological background 
O : non-wrttten disclosure 
P t intermediate document 



T ; theory or principle nodertytng the invention 
£ : earlier patent document, but published on, or 

after the filing date 
D : document cited In the application 
L : document cited for t * 



& : member of the same patent family, corresponding 
document 



J 



European Patent 
Office 



EUROPEAN SEARCH REPORT 



Page 2 

Application Number 

EP 89 30 2906 



DOCUMENTS CONSIDERED TO BE RELEVANT 



Category 



Citation of document with indication, where appropriate, 
of relevant passages 



Relevant 
to dabs 



CLASSIFICATION OF THE 
APPIJCATION(IiitCL4) 



P,X 



FR-A-1 311 952 (VALLETTE & PAVON) 

* Page 1, left-hand column, lines 
16-21; page 1, right-hand column, line 
34 - page 2, line 10; figures 1-4 * 

HIGHWAYS, vol. 56, no. 1937, May 1988, 
page 29, Croydon, Surrey, GB; "Impact 
resistant marker postrange" 

* Complete article and illustrations * 



5,6,8 



1-9 



TECHNICAL FIELDS 
SEARCHED (InL OA) 



The present search report has been drawn up for all claims 



Place of search 

THE HAGUE 



Date of completion of the tearcb 

30-06-1989 



Examiner 

SCHUMAN R. 



CATEGORY OF CITED DOCUMENTS 

X : particularly relevant If tales alone 

Y : particularly relevant if combined with another 

document of the same category 
A : technological background 
O : rj on- written disclosure 
P : intermediate document 



T : theory or principle underlying the invention 
C : earlier patent document, bttt published on, or 

after the Cling date 
D : document cited In the application 
L : document cited for other reasons 

& : member of the same patent family, corresponding 
document