Measuring and testing – Probe or probe mounting
Patent
1990-03-01
1991-11-05
Noland, Tom
Measuring and testing
Probe or probe mounting
277 80, G01M 1900
Patent
active
050623109
ABSTRACT:
A probe inlet apparatus comprises an annular seal member and an inner seal device both mounted within an inlet housing having an inlet housing cavity extending therethrough. The inner seal device comprises a seat member connected to the inlet housing and a seal member ball adapted to seat against a seat member opening to form an inner seal. The seal member is responsive to a magnetic seal member positioning force produced by a suitable magnetic associated with the inlet housing to be held in the seated position so as to form the inner seal. An elongated probe may be inserted through the inlet housing cavity to first form an annular seal with the annular seal member and then to contact and displace the seal member against the magnetic positioning force from its seated position to an unseated position allowing the probe member to reach a desired probe depth. As the probe member is withdrawn from the inlet housing, the magnetic seal member positioning force moves the seal member back to the seated position to reestablish the inner seal before the probe is removed from the annular seal member to break the annular seal.
REFERENCES:
patent: 3043303 (1962-02-01), Still
patent: 4056981 (1971-11-01), Kalka et al.
patent: 4359908 (1982-11-01), Perces
patent: 4476732 (1984-10-01), Karg
patent: 4682508 (1987-07-01), Steiner et al.
patent: 4854181 (1989-08-01), Gerstel
Jade Systems, Inc.
Noland Tom
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