Sight glass apparatus

Details Sight glass apparatus Sight glass apparatus

1988-05-02

1989-12-26

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Sight glass

73323, 73325, 285 45, 285 93, 285911, G01F 2302

Patent

active

048889903

ABSTRACT:
A sight glass apparatus and method limiting external pressures on the sight glass. The sight glass apparatus has a pair of flanges wherein each of the flanges includes a tubular top portion which abuts the respective pipes. The tubular top portion includes a circular cut-out for providing a victaulic type connection for a clamping means to clamp to the respective pipes and a conical section which tapers into an annular rim section having a plurality of apertures wherein a bottom portion of the annular rim includes a center aperture being co-axially aligned when mounted to the pipes. An O-ring is mounted in a recess with a cylindrical glass tubing for observing the fluid or the like. The sight glass apparatus further includes machine precisioned shoulder studs with threaded ends. The ends protruding through the apertures of each of flange when connecting the sight glass apparatus together. Therefore, the machined precision shoulder stud bears most of the sealing pressure and limits the movement of the flanges towards each other so that the axial pressure exerted on the cylindrical glass tubing is minimal.

REFERENCES:
patent: 1042730 (1912-10-01), Walquist
patent: 1078552 (1913-11-01), Patterson
patent: 1615118 (1927-01-01), Farragher et al.
patent: 1886444 (1932-11-01), Wurster
patent: 2624308 (1953-01-01), Wittlin
patent: 2655124 (1953-10-01), Gary et al.
patent: 2744488 (1956-05-01), Wittlin
patent: 2780199 (1957-02-01), Wittlin
patent: 2842089 (1958-07-01), Midkiff
patent: 3672749 (1972-06-01), Roser
patent: 4162826 (1979-07-01), Van der Beck et al.
patent: 4372652 (1983-02-01), Pontefract
patent: 4697613 (1987-10-01), Wienck

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