The present invention provides a system and method for measuring the load of a vehicle using an optimal resonant frequency search wireless power transmission system, wherein a wireless power transmission system, which has maximum power transmission efficiency due to effectively searching for an optimal resonant frequency by varying system frequency, is provided in order to supply wireless power to various sensors mounted on wheels and wheel housings, etc. of the vehicle, and the load can be accurately and effectively measured by using the wireless power transmission system without additional sensors or devices.

The present invention provides a system and method for measuring the load of a vehicle using an optimal resonant frequency search wireless power transmission system, wherein a wireless power transmission system, which has maximum power transmission efficiency due to effectively searching for an optimal resonant frequency by varying system frequency, is provided in order to supply wireless power to various sensors mounted on wheels and wheel housings, etc. of the vehicle, and the load can be accurately and effectively measured by using the wireless power transmission system without additional sensors or devices.

The present invention provides a system and method for measuring the load of a vehicle using an optimal resonant frequency search wireless power transmission system, wherein a wireless power transmission system, which has maximum power transmission efficiency due to effectively searching for an optimal resonant frequency by varying system frequency, is provided in order to supply wireless power to various sensors mounted on wheels and wheel housings, etc. of the vehicle, and the load can be accurately and effectively measured by using the wireless power transmission system without additional sensors or devices.

Transport rail system capable of detecting a weight of a rail vehicle, includes one or more rails, and one or more sensors for measuring a magnetic property. At least one of the sensors is adapted to measure a change of a magnetic property in order to determine a weight bearing on one or more of the rails, the change of the magnetic property being caused by stress exerted on the rail by the weight, and one or more of the sensors are adapted to measure the change of a magnetic property of the rail itself and/or that one or more of the sensors are adapted to measure the change of a magnetic property of a supporting structure of the rail.

Transport rail system capable of detecting a weight of a rail vehicle, includes one or more rails, and one or more sensors for measuring a magnetic property. At least one of the sensors is adapted to measure a change of a magnetic property in order to determine a weight bearing on one or more of the rails, the change of the magnetic property being caused by stress exerted on the rail by the weight, and one or more of the sensors are adapted to measure the change of a magnetic property of the rail itself and/or that one or more of the sensors are adapted to measure the change of a magnetic property of a supporting structure of the rail.

A jack assembly includes a body. The jack assembly also includes a lifting piston positioned at least partially above the body and configured to move up and down with respect to the body. The jack assembly also includes a lock collar positioned at least partially around the lifting piston. The lock collar is configured to move up and down with respect to the lifting piston in response to rotating the lock collar with respect to the lifting piston. The jack assembly also includes a load cell positioned at least partially around the lifting piston and between the body and the lock collar. The jack assembly is configured to support an object, which exerts a downward force onto the lifting piston. The downward force is transferred from the lifting piston to the lock collar to the load cell to the body. The load cell measures the downward force.

A jack assembly includes a body. The jack assembly also includes a lifting piston positioned at least partially above the body and configured to move up and down with respect to the body. The jack assembly also includes a lock collar positioned at least partially around the lifting piston. The lock collar is configured to move up and down with respect to the lifting piston in response to rotating the lock collar with respect to the lifting piston. The jack assembly also includes a load cell positioned at least partially around the lifting piston and between the body and the lock collar. The jack assembly is configured to support an object, which exerts a downward force onto the lifting piston. The downward force is transferred from the lifting piston to the lock collar to the load cell to the body. The load cell measures the downward force.

A system for weight measurement of solids in a flow stream. The system collects the solids from the flow stream in a recipient that is slidably mounted within a pressurized accumulator vessel, which is pressurized with a variable pressure due to the flow stream. A recipient stem connects the weight of the recipient to a load cell. A force on the recipient stem includes both the force of the weight of the solids and a force produced by the variable pressure acting on the cross-sectional area of the recipient stem. The variable pressure is also applied to a compensating stem to produce a compensation force that is used to cancel out the force acting on the recipient stem due to the variable pressure.

A system for weight measurement of solids in a flow stream. The system collects the solids from the flow stream in a recipient that is slidably mounted within a pressurized accumulator vessel, which is pressurized with a variable pressure due to the flow stream. A recipient stem connects the weight of the recipient to a load cell. A force on the recipient stem includes both the force of the weight of the solids and a force produced by the variable pressure acting on the cross-sectional area of the recipient stem. The variable pressure is also applied to a compensating stem to produce a compensation force that is used to cancel out the force acting on the recipient stem due to the variable pressure.

A magnetized weight and distance measuring assembly and method for demonstrating the inverse square law of magnetism by displaying a change in distance between magnets after applying a weighted member to one of the magnets includes a base and a base magnet mounted the base. A shaft is coupled to the base, and a shaft magnet is mounted to the shaft and is moveable along the shaft when the shaft magnet repels away from the base magnet by a magnetic force. A tube is attached to the shaft magnet to define a receptacle. The receptacle receives a plurality of weighted members, wherein the magnetic force opposes a gravitational force of the receptacle and weighted members such that the receptacle moves upwardly along the shaft when the receptacle receives the weighted members. A plurality of graduation markings is positioned on a panel extending upwardly from said top surface of the base.