Patent EP0092282A1 successfully refreshed from Google Patents.
EP0092282A1
Expired / Lapsed
EP
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A retractable road barrier
Assignee: Individual
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Filing: 1983-04-14
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Granted: —
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Expires: 2003-04-14
Abstract
Abstract A retractable road barrier comprises a barrier element (5) pivotable about a horizontal axis (6), and an extensible drive mechanism (8), one end of which is anchored pivotally while the other end is connected to an erecting element (11) which co-operates with an erecting surface (12) situated beneath the roadway, and which is also coupled to the first and of a link (13), the other end of which is coupled to the barrier element (5) at a point (15) situated between the hori- zointal axis (6) and the opposite end (16) thereof.
Inventors
- 👤 Pieter Arie Jan Eikelenboom
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:33
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/04; E01F13/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A retractable road barrier comprising a barrier element pivotable about a first horizontal axis, characterised by an extensible drive mechanism (8), one end of which is pivotally about a second axis (9), situated beneath and parallel to the first axis, anchored while the other end is connected to an erecting element (11) which co-operates with an erecting surface (12) situated beneath the roadway and which rises towards the two said axes, and is also coupled pivoting about a third axis (14) parallel to the first and second axes, to the first end of a link (13), the other end of which is coupled, pivoting about a fourth axis (15) parallel to the other axes, to the barrier element (5) at a point situated between the first pivot axis and the end thereof.
Claim 2
Dependent Claim
132 words
A retractable road barrier comprising a barrier element pivotable about a first horizontal axis, characterised by an extensible drive mechanism (8), one end of which is pivotally about a second axis (9), situated beneath and parallel to the first axis, anchored while the other end is connected to an erecting element (11) which co-operates with an erecting surface (12) situated beneath the roadway and which rises towards the two said axes, and is also coupled pivoting about a third axis (14) parallel to the first and second axes, to the first end of a link (13), the other end of which is coupled, pivoting about a fourth axis (15) parallel to the other axes, to the barrier element (5) at a point situated between the first pivot axis and the end thereof.
Claim 3
Dependent Claim
23 words
A road barrier according to claim 1, characterised in that the drive mechanism (8) is a ram actuated by a medium under pressure.
Claim 4
Dependent Claim
43 words
A road barrier according to claim 2, characterised in that the, elongate, erecting element (11) is connected at its center to a piston rod (10) of the ram (8) and is at each of the two ends pivotably connected to a link (13).
Claim 5
Dependent Claim
26 words
A road barrier according to claims 1 to 3, characterised in that the erecting surface (12) merges, at the highest point, into a flat portion (12a).
Claim 6
Dependent Claim
29 words
A road barrier according to claims 1 to 4, characterised in that the erecting element (11) is coupled to at least one abutment (17) engaging beneath the erecting surface.
Claim 7
Dependent Claim
24 words
A road barrier according to claims 1 to 5, characterised by a compensating spring (18) placed between the barrier element (15) and the frame.
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