Method of making fluid sensor probe

Details Method of making fluid sensor probe Method of making fluid sensor probe

2006-05-02

2006-05-02

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S858000, C029S859000, C029S868000, C029S850000, C029S894000, C340S620000

Reexamination Certificate

active

07036224

ABSTRACT:
A fluid sensor probe such as a temperature probe uses heat shrink tubing to seal and provide strain relief at a proximal end of the probe. The heat shrink tubing uses a layer of hot melt adhesive along its inside surface to form a strong bond and hermetic seal. The heat shrink tubing is applied as an inner tubing around circuit wires extending into the probe and as an outer tubing around the inner tubing and around the proximal end of the probe housing. Together the inner tubing and the outer tubing can hermetically seal a substantial gap between the probe housing and the circuit wires. In a fast response probe, prior to closing the distal end of the probe housing with an end wall, openings are punched in a side wall of the probe housing against a mandrel. The openings permit fluid flow to contact the sensing element within the probe housing. Heat shrink tubing can be used to seal the circuit wires and prevent leakage.

REFERENCES:
patent: 3878830 (1975-04-01), Bicher
patent: 4137768 (1979-02-01), Tushie et al.
patent: 4527909 (1985-07-01), Dale et al.
patent: 4569228 (1986-02-01), Bellgardt et al.
patent: 4830013 (1989-05-01), Maxwell
patent: 6457857 (2002-10-01), Gul
One page Dual Wall Flexible Clear Polyolefin With Thick Wall Adhesive (Sumitube® W3C) Mar. 12, 2003.
Two pages Dual Wall Flexible Polyolefin With Thick Wall Adhesive Military Specification (SubmitubeTM W3B2) Mar. 12, 2003.
3M Heat Shrink Tubing and Devices Manual (58 pages).

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