Speed sensitive automatic speed bump
First Claim
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1. An automatic speed bump for use by a vehicle traveling on a driving surface, the vehicle having at least one tire, the speed bump comprising:
- a base mounted to the driving surface;
a front pivot member hingedly coupled to said base;
a first rear pivot member hingedly coupled to said front member and a second rear pivot member hingedly coupled to said base, wherein portions of said first and second rear members overlap;
a support spring that biases said front pivot member toward a raised, approach position; and
a speed-sensitive lock mechanism coupled to said front pivot member or said base that locks said front pivot member in said raised position when impacted by a vehicle tire traveling at a speed at or above a predetermined speed.
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Abstract
An automatic speed sensitive speed bump having a base plate, a front plate hingedly connected to the base plate, and a spring that biases the front plate toward a raised position. A speed-sensitive lock mechanism for locking the front plate in the raised position when impacted by a vehicle tire traveling at a speed at or above a predetermined speed. However, when the vehicle is traveling below the predetermined speed, the front plate is not locked in the raised position and collapses to a horizontal position such that the vehicle does not experience a bump.
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Citations
22 Claims
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1. An automatic speed bump for use by a vehicle traveling on a driving surface, the vehicle having at least one tire, the speed bump comprising:
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a base mounted to the driving surface;
a front pivot member hingedly coupled to said base;
a first rear pivot member hingedly coupled to said front member and a second rear pivot member hingedly coupled to said base, wherein portions of said first and second rear members overlap;
a support spring that biases said front pivot member toward a raised, approach position; and
a speed-sensitive lock mechanism coupled to said front pivot member or said base that locks said front pivot member in said raised position when impacted by a vehicle tire traveling at a speed at or above a predetermined speed. - View Dependent Claims (2)
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3. An automatic speed bump for use by a vehicle traveling on a driving surface, the vehicle having at least one tire, the speed bump comprising:
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a base mounted to the driving surface;
a front pivot member hingedly coupled to said base;
a support spring that biases said front pivot member toward a raised, approach position; and
a speed-sensitive lock mechanism coupled to said front pivot member or said base that locks said front pivot member in said raised position when impacted by a vehicle tire traveling at a speed at or above a predetermined speed;
wherein said speed-sensitive lock mechanism comprises a lock member pivotally coupled to said front pivot member and a sensor that is coupled to or that engages said lock member, said sensor including a sensor spring.- View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An automatic speed bump for use by a vehicle traveling on a driving surface, the vehicle having at least one tire, the speed bump comprising:
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a base mounted to the driving surface;
a front pivot member hingedly coupled to said base;
a first rear pivot member hingedly coupled to said front member;
a second rear pivot member hingedly coupled to said base, wherein portions of said first and second rear members overlap;
a support spring coupled between said first and second rear members to bias said speed bump into said raised, approach position. a speed-sensitive lock mechanism comprising at least one lock member hingedly coupled to said front pivot member, at least one ramp mounted to said base, at least one rotary sensor rod extending from said lock member and having at least one extension member with at least one engagement surface formed thereon that engages said ramp, and at least one sensor spring biasing said sensor rod against rotation in a first direction, wherein said speed-sensitive lock mechanism locks said front pivot member in said raised position when impacted by a vehicle tire traveling at a speed at or above a predetermined speed but permits said front pivot member to collapse to a generally horizontal position when impacted by a vehicle tire traveling at a speed below said predetermined speed. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification