DIAPHRAGM-TYPE TIRE PRESSURE INDICATOR
First Claim
1. A diaphragm-type tire pressure indicator for being installed in the air nozzle of a vehicle tire to give an indication when the tire pressure of the vehicle tire is low, comprising:
- a casing having a receiving chamber and a coupling unit;
a movable diaphragm mounted in the receiving chamber of the casing;
a push rod connected to the movable diaphragm for being moved up and down with the movable diaphragm;
a sleeve mounted in the receiving chamber of the casing and around the push rod, the sleeve having a bottom end and a top end; and
a spring means sleeved onto the push rod.
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Accused Products
Abstract
A diaphragm-type tire pressure indicator is fixedly fastened to the air nozzle of a vehicle tire for indicating a low pressure of the tire. A flexible diaphragm is mounted in a receiving chamber in the casing of the tire pressure indicator. A push rod is connected to the flexible diaphragm for being moved up and down with the diaphragm subject to the status of the tire pressure of the vehicle tire. A sleeve is mounted in the receiving chamber and is around the push rod. A spring is sleeved onto the push rod.
13 Citations
23 Claims
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1. A diaphragm-type tire pressure indicator for being installed in the air nozzle of a vehicle tire to give an indication when the tire pressure of the vehicle tire is low, comprising:
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a casing having a receiving chamber and a coupling unit;
a movable diaphragm mounted in the receiving chamber of the casing;
a push rod connected to the movable diaphragm for being moved up and down with the movable diaphragm;
a sleeve mounted in the receiving chamber of the casing and around the push rod, the sleeve having a bottom end and a top end; and
a spring means sleeved onto the push rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A diaphragm-type tire pressure indicator for being installed in the air nozzle of a vehicle tire to give an indication when the tire pressure of the vehicle tire is low, comprising:
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a casing having a receiving chamber and a coupling unit;
a flexible diaphragm mounted in the receiving chamber of the casing;
a push rod connected to the movable diaphragm for being moved up and down with the movable diaphragm;
a sleeve mounted in the receiving chamber of the casing around the push rod, the sleeve having a bottom end and a top end;
an adjustment cap fastened to the top end of the sleeve in such a manner that the push rod extends out of the adjustment cap, so as to achieve a micro-calibration function by adjusting a position of the adjustment cap relative to the top end of the sleeve;
a spring means sleeved onto the push rod;
a conductive member mounted on the adjustment cap;
a circuit board electrically mounted on the conductive member, the circuit board having a light emitting element; and
a battery seat mounted on the push rod for holding a battery cell, the battery cell having a first electrode connected to the light emitting element and a second electrode electrically connected to the battery seat, whereby the battery seat is moved up and down with the push rod relative to the conductive member to selectively contact with the conductive member for turning on the light emitting element. - View Dependent Claims (11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23)
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17. A diaphragm-type tire pressure indicator for being installed in the air nozzle of a vehicle tire to give an indication when the tire pressure of the vehicle tire is low, comprising:
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a casing having a receiving chamber and a coupling unit;
a flexible diaphragm mounted in the receiving chamber of the casing;
a push rod connected to the diaphragm for being moved up and down with the diaphragm;
a sleeve mounted in the receiving chamber of the casing around the push rod, the sleeve having a bottom end and a top end;
an adjustment cap fastened to the top end of the sleeve in such a manner that the push rod extends out of the adjustment cap, so as to achieve a micro-calibration function by adjusting a position of the adjustment cap relative to the top end of the sleeve;
a spring means sleeved onto the push rod;
a conductive member mounted on the adjustment cap;
a circuit board electrically mounted on the conductive member, the circuit board having an RF transmitter module; and
a battery seat mounted on the push rod and for holding a battery cell, the battery cell having a first electrode connected to the RF transmitter module and a second electrode electrically connected to the battery seat, wherein the battery seat is moved up and down with the push rod, relative to the conductive member, to selectively contact the conductive member for outputting a radio signal indicating a low pressure of the tire.
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Specification