Hydraulic spring vehicle barricade and hydraulic circuit therefor
First Claim
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1. A vehicle barricade, comprising:
- (a) a frame;
(b) a barrier plate pivotally mounted to said frame for being moved between a passage and a blocking position;
(c) first and second hydraulic motor means operably connected to said plate; and
,(d) hydraulic power supply means including first means for assuring constant power supply to said first motor means for biasing said first motor means so that said barrier plate is biased toward said blocking position and second means for selectively supplying power to said second motor means for causing pivoting of said plate into said passage position.
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Abstract
A vehicle barricade comprises a frame to which a barrier plate is pivotally mounted for being moved between a passage and a blocking position. First and second hydraulic motors operably interconnect the plate and the frame. An hydraulic power supply is operably connected with the hydraulic motors and includes an uninterrupted line for assuring constant power supply to the first hydraulic motor for thereby biasing the first hydraulic motor into extension and control valve means for selectively supplying power to the second motor for thereby causing selective pivoting of the plate.
55 Citations
25 Claims
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1. A vehicle barricade, comprising:
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(a) a frame; (b) a barrier plate pivotally mounted to said frame for being moved between a passage and a blocking position; (c) first and second hydraulic motor means operably connected to said plate; and
,(d) hydraulic power supply means including first means for assuring constant power supply to said first motor means for biasing said first motor means so that said barrier plate is biased toward said blocking position and second means for selectively supplying power to said second motor means for causing pivoting of said plate into said passage position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A traffic controller, comprising:
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(a) an open topped frame disposed below a surface to be controlled; (b) a barrier plate pivotally mounted to said frame for covering the top thereof in order to allow traffic to pass therealong and for being pivoted relative to said frame for preventing traffic from passing therealong; (c) first and second hydraulic motor means, each of said motor means has a first portion operably connected to said frame and a second extensible portion operably connected to said plate; and
,(d) hydraulic power supply means are operably connected to each of said motor means and includes first means for assuring constant power supply to said first motor means so that said first motor means is biased into extension and second means for selectively supplying power to said second motor means for thereby causing pivoting of said plate. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An hydraulic system for a vehicle barricade, comprising:
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(a) a reservoir for storing hydraulic fluid; (b) a pump having an inlet and an outlet and said inlet operably connected to said reservoir; (c) accumulator means for storing pressurized hydraulic fluid operably connected with said outlet and includes valve means for preventing pressurized fluid from flowing from said accumulator means to said pump; (d) first and second hydraulic motor means, each motor means has an extensible portion for operable connection with a barricade plate; (e) an uninterrupted line interconnects said accumulator means and said first motor means for assuring the constant supply of pressurized fluid thereto for thereby biasing said extensible portion and the barrier plate into blocking position; and
,(f) first and second control valve means operably interconnect said outlet, said second motor means and said reservoir for causing selective extension and retraction of said second motor means extensible portion.
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21. A vehicle barricade, comprising:
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(a) a frame; (b) a barrier plate pivotally associated with said frame and having a raised blocking position and a lowered passage position; c) first and second hydraulic motor means, each motor means has a first portion operably connected to said frame and a second extensible portion operably connected to said plate; and
,(d) hydraulic power supply means operably connected to said motor means for supplying pressurized hydraulic fluid thereto so that said first hydraulic motor means is continuously biased for causing biasing of said plate into said blocking position and said power supply means further includes valve means for causing selected operation of said second motor means and thereby pivoting of said plate. - View Dependent Claims (22, 23, 24, 25)
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Specification