| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073861290 | In both directions simultaneously | 6 |
| 20090090194 | Ultrasonic Flow Sensor with Repeated Transmissions - A transit-time flow sensor determines a rate at which fluid flows by measuring a propagation time difference between upstream and downstream acoustic transmissions. This may involve providing an acoustic path consisting of sequentially traversed path segments and a repeating arrangement that uses the energy in a received pulse to repeat the pulse in the next sequential segment. | 04-09-2009 |
| 20130205913 | ULTRASONIC FLOW METER WITH ZERO IMPEDANCE MEASURING ELECTRONICS - The present invention discloses an ultrasonic flow meter comprising a generator circuit and a receiver circuit electrically separated from the generator circuit. The flow meter further comprises transducer switching means for controlled connection of ultrasonic transducers to either the generator circuit or to the receiver circuit. The output impedance of the generator circuit and the input impedance of the receiver circuit are controlled to be substantially zero. | 08-15-2013 |
| 20130263677 | ULTRASONIC FLOWMETER - Provided is an ultrasonic flow meter capable of detecting a flow rate using measurement flow channel including layered flow channels and a pair of ultrasonic sensors and disposed on a wall surface on the same side of measurement flow channel so as to form a propagation path of ultrasonic waves utilizing reflection on flow channel inner wall surface on an opposing side, and control rod as fluid control means is disposed on an upstream side of separation plates that form a multilayer section. | 10-10-2013 |
| 20140345391 | FLOW METER DEVICE - A measurement control section of a flow meter device causes a measurement block dividing section to divide a sampling cycle Tc into three or more, for example, four measurement blocks Tb of an equal length and causes the flow measuring section to measure the flow of a fluid in each of the measurement blocks Tb. A flow calculating section of the flow measuring section calculates an average value of flow values obtained in all of the measurement blocks in each sampling cycle Tc, as a flow value in each sampling cycle Tc. This configuration allows a flow meter device which employs an inverse transit time difference method, such as an estimation gas meter, to more effectively lessen the influence of a pulsation and to perform flow measurement with higher accuracy. | 11-27-2014 |
| 20150292927 | ULTRASONIC FLOW METER - An ultrasonic flow meter comprises a flow channel ( | 10-15-2015 |
| 20160153816 | ULTRASONIC FLOWMETER AND ULTRASONIC WAVE ABSORBER FOR ULTRASONIC FLOWMETER | 06-02-2016 |
