Mass flowmeter with hermetically sealed housing
Patent 5309762 Issued on May 10, 1994. Estimated Expiration Date: 
May 10, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 10, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2594618 3187569 3827299 Mass flowmeter Fast responsive flowmeter transducer Mass flow controller Flow metering of high temperature gases Patent #: 4949578 InventorsAssigneeApplicationNo. 615069 filed on 11/19/1990US Classes:73/204.22, With sensor housing73/202.5Thermal sensing of flowExaminersPrimary: Goldstein, HerbertAttorney, Agent or FirmForeign Patent References
International ClassG01F 001/68Foreign Application Priority Data1989-11-27 JPAbstractA mass flow meter includes a housing body having a fluid passageway extending therethrough with a capillary tube communicating with the fluid passageway. The capillary tube is connected through a pair of metallic sleeves mounted on a base member which in turn is fastened to the housing body. A pair of sensor coils is connected to the capillary tube to measure any fluid flow. A metal sensor case is welded airtight to the base member to encapsulate the capillary tube. | |
