Barometer with multi-functions of measurement and depressurization

摘要

A barometer with multi-functions of measurement and depressurization has a body, an intake set, an exhaust set, a depressurizing set and a pressure meter. The intake set is mounted on a side of the body. The exhaust set and the depressurizing set are mounted on the body and aligning with the intake set. The pressure meter is mounted on a top surface of the body. The body has an inner channel communicating with the intake set, the exhaust set, the depressurizing set and the pressure meter. Thus, the functions of inflating, pressure measuring, depressurization and re-inflating can be accomplished by the barometer for eliminating the inconvenience of frequent installing and removing an inflation apparatus, a depressurization device and a pressure meter.

主权项

1. A barometer with multi-functions of measurement and depressurization comprising:
a body having
an inner channel;an inflation base formed and extending on a side of the body, the inflation base having an inlet formed in the inflation base and communicating with the inner channel of the body;an exhaust base mounted on the body, aligning with the inflation base, and having
an exhaust hole formed on one end of the exhaust base distal from the body and communicating with the inner channel; anda depressurizing hole formed perpendicularly to the exhaust hole on the exhaust base and communicating with the inner channel; an intake set mounted in the side of the body and communicating with the inner channel; an exhaust set; and a depressurizing set mounted in the body and communicating with the inner channel, and having
an installation base connected to the depressurizing hole of the exhaust base, and having
a passage formed through a center of the installation base and communicating with the depressurizing hole of the exhaust base;a receiving recess formed in an inner side of the installation base and communicating with the passage;a first groove formed centrally on an outer surface of the installation base; anda second groove formed in an inner surface of the installation base opposite to the receiving recess;a spring mounted in the receiving recess;a first o-ring mounted around the first groove;a second o-ring mounted in the second groove; anda supporting cap mounted around the installation base, covering the second o-ring and the second groove, and having a central opening formed through the supporting cap;a top cover abutted by the spring;a push rod mounted through the installation base and having
a head portion mounted in the depressurizing hole of the exhaust base;a shaft portion mounted through the central opening of the supporting cap and the passage of the installation base, mounted through the spring, and connecting to the top cover; anda depressurizing notch concaved on an outer face of the shaft portion;a third o-ring mounted around the shaft portion and abutting a surface of the head portion of the push rod, the third o-ring separating from the supporting cap in an open position to vent pressure from the depressurizing hole past the depressuring notch and into the receiving recess; and a pressure meter mounted on a top surface of the body and communicating with the inner channel.