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. 27, 1986
Filed:
Nov. 13, 1984
Iku Imamura, Fujimi, JP;
Netsushin Co., Ltd., Tokyo, JP;
Abstract
A resistance thermometer having a resistance temperature detector (RTD) element fixedly supported within a tubular metallic sheath by a compacted insulating material is manufactured by integrally connecting in series two tubular metallic sheaths by pressure welding. The first sheath has a smaller diameter portion which can be inserted into and received by the second sheath. The manufacture method includes the steps of: supporting electrical conductors in the first sheath using the insulating material, electrically joining the RTD element to the conductors supported in the first sheath, putting a metallic ring on the smaller diameter portion of the first sheath, inserting the smaller diameter portion of the first sheath into the second sheath with the RTD element being accommodated within the second sheath, and ramming the metallic ring radially inwardly so that the first and second sheaths are integrally bonded by pressure welding. After the pressure welding, the second sheath is filled with the insulating material for fixation of the RTD element and a closure element is attached to the open end of the second sheath to complete the resistance thermometer.