Fast and accurate tire pressure charge controller
First Claim
Patent Images
1. A pressure charge controller comprising:
- a supply pressure inlet port for connecting to a pressure source supply;
a flow passage having a first end and a second end;
a microprocessor;
a first valve having an inlet end and an outlet end and being in electrical communication with the microprocessor;
means for connecting the pressure inlet port to the first end of the flow passage;
means for connecting the second end of the flow passage to the inlet end of the first valve;
a flow passage manifold having many interconnected ports;
a second valve having an inlet end and an outlet end and being in electrical communication with the microprocessor;
a pressure transducer being in electrical communication with the microprocessor and having a pressure port for attaching to the flow passage manifold;
a pressure outlet port having two ends;
a hose having a first end and a second end attached to a pressure charge head;
means for connecting the flow passage manifold to the outlet end of the first valve, to the inlet end of the second valve, to the pressure port of the pressure transducer, and to an end of the pressure outlet port;
means for attaching the first end of the hose to the other end of the pressure outlet port;
an independent flow passage having a first end and a second end;
means for connecting the first end of the independent flow passage to the outlet end of the second valve and means for attaching the second end of the independent flow passage to atmospheric pressure or a discharge return tank pressure;
means for specifying or selecting a desired tire or pressure container pressure value;
an audio device in communication with the microprocessor offering differing audible signals;
a display in communication with the microprocessor displaying different visual messages;
means for calculating a pressure charge relationship utilizing the following formula ##EQU3## where, Td is the time required to charge the tire or pressure container to the desired pressure,Δ
Ti is an initial charge time interval,p0 is the tire or pressure container pressure before initiating a pressure charge;
Δ
pi is a pressure difference between the tire or pressure container pressure after initiating an initial pressure charge and the tire or pressure container pressure before the pressure charge began,ps is the pressure source supply pressure,pi is the tire or pressure container pressure after having been charged during an initial time interval,and Pd is the desired tire or pressure container pressure value; and
,means for calculating a pressure discharge relationship utilizing the following formula ##EQU4## where, Td is the time required to discharge the tire or pressure container to the desired pressure,Δ
Ti is an initial discharge time interval,p0 is the tire or pressure container pressure before initiating a pressure discharge;
Δ
pi is a pressure difference between the tire or pressure container pressure after initiating an initial pressure discharge and the tire or pressure container pressure before the pressure discharge begins,pa is the atmospheric pressure or discharge return tank pressure,pi is the tire or pressure container pressure after having been discharged during an initial time interval,and pd is the desired tire or pressure container pressure value.
0 Assignments
0 Petitions
Accused Products
Abstract
A fast and accurate pressure charge controller to inflate a tire or a pressure container to a desired pressure with an air or a gas compressor supplied pressure without regulation of the supplied pressure and without using a pressure gauge or any hand-held pressure measurement device to measure the charged pressure at the vicinity of the tire or the container, to stop charging and to send out either an audio or a visual signal when desired tire or the container'"'"'s pressure is reached. The controller is also able to release over charged tires or pressure containers to desired pressure.
39 Citations
1 Claim
-
1. A pressure charge controller comprising:
-
a supply pressure inlet port for connecting to a pressure source supply; a flow passage having a first end and a second end; a microprocessor; a first valve having an inlet end and an outlet end and being in electrical communication with the microprocessor; means for connecting the pressure inlet port to the first end of the flow passage; means for connecting the second end of the flow passage to the inlet end of the first valve; a flow passage manifold having many interconnected ports; a second valve having an inlet end and an outlet end and being in electrical communication with the microprocessor; a pressure transducer being in electrical communication with the microprocessor and having a pressure port for attaching to the flow passage manifold; a pressure outlet port having two ends; a hose having a first end and a second end attached to a pressure charge head; means for connecting the flow passage manifold to the outlet end of the first valve, to the inlet end of the second valve, to the pressure port of the pressure transducer, and to an end of the pressure outlet port; means for attaching the first end of the hose to the other end of the pressure outlet port; an independent flow passage having a first end and a second end; means for connecting the first end of the independent flow passage to the outlet end of the second valve and means for attaching the second end of the independent flow passage to atmospheric pressure or a discharge return tank pressure; means for specifying or selecting a desired tire or pressure container pressure value; an audio device in communication with the microprocessor offering differing audible signals; a display in communication with the microprocessor displaying different visual messages; means for calculating a pressure charge relationship utilizing the following formula ##EQU3## where, Td is the time required to charge the tire or pressure container to the desired pressure, Δ
Ti is an initial charge time interval,p0 is the tire or pressure container pressure before initiating a pressure charge; Δ
pi is a pressure difference between the tire or pressure container pressure after initiating an initial pressure charge and the tire or pressure container pressure before the pressure charge began,ps is the pressure source supply pressure, pi is the tire or pressure container pressure after having been charged during an initial time interval, and Pd is the desired tire or pressure container pressure value; and
,means for calculating a pressure discharge relationship utilizing the following formula ##EQU4## where, Td is the time required to discharge the tire or pressure container to the desired pressure, Δ
Ti is an initial discharge time interval,p0 is the tire or pressure container pressure before initiating a pressure discharge; Δ
pi is a pressure difference between the tire or pressure container pressure after initiating an initial pressure discharge and the tire or pressure container pressure before the pressure discharge begins,pa is the atmospheric pressure or discharge return tank pressure, pi is the tire or pressure container pressure after having been discharged during an initial time interval, and pd is the desired tire or pressure container pressure value.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeXiaojian Tao, Yu Lang
-
Original AssigneeXiaojian Tao, Yu Lang
-
InventorsTao, Xiaojian, Lang, Yu
-
Primary Examiner(s)Dombroski, George M.
-
Assistant Examiner(s)AMROZOWICZ, PAUL DOUGLAS
-
Application NumberUS08/890,493Time in Patent Office1,056 DaysField of Search73/146.2, 73/146.5, 73/146.8, 152/415, 702/140, 340/442US Class Current73/146.8CPC Class CodesB60S 5/046 using electrical or electro...G01L 17/00 Devices or apparatus for me...
