Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1988-10-12
1989-10-17
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
137554, 137521, 251 65, F16K 3700
Patent
active
048740128
ABSTRACT:
A magnetically operated flow device contains a flow responsive magnetically attractable body within a flow passage defining upstream and downstream directions therein. The body is movable in upstream and downstream directions in the passage. The passage includes upstream and downstream limit positions to define upstream and downstrean limits of movement of the body within the passage. Magnetic means are provided to attract the body against the fluid flow within the passage to the upstream limit position. The body constitutes a drag obstruction to fluid flow through the passage and will, therefore, decouple from its upstream magnetically retained position in the passage and move to the downstream limit position when drag froces (i.e. flow) increase to the design limit value.
REFERENCES:
patent: 705255 (1902-07-01), Leidecker
patent: 2029633 (1936-04-01), Muhleiser
patent: 2569316 (1951-09-01), Jerman
patent: 2949931 (1960-08-01), Ruppright
patent: 3265062 (1966-08-01), Hesse
patent: 3370305 (1968-02-01), Goott et al.
patent: 3914994 (1975-10-01), Bonner
patent: 3958603 (1976-05-01), Bannon et al.
Chambers A. Michael
Mallard Products, Inc.
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