The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1987
Filed:
Jan. 29, 1985
Desheng Wang, Beijing, CN;
Other;
Abstract
A pressure-measuring transducer device for transforming a change of tested pressure into a change of output signal frequency. Variable reluctance sensing elements and an FM IC block are assembled together in a base. The transducer device can have a variety of configurations and external forms and is sturdy and reliable, tightly sealed, interference resistant, and adapted for use in measuring dynamic and static pressures of different mediums. The pressure transducer has a piston type double film, and the base is made of aluminum alloy and is 'honeycombed'. The specific gravity is approximately equal to that of soil. It is adapted for measuring soil pressure or boundary soil pressure of reinforced concrete structure and pressure of loose solid substances. An alternate embodiment is used for measuring pore pressure in soil. Several forms of filtering devices are provided. A liquid pressure transducer can be used for measuring liquid pressure in liquid and for measuring positive or negative pressure in gas, if the filtering device is removed.