Vibratory transducer

Details Vibratory transducer Vibratory transducer

2005-10-25

2005-10-25

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

Reexamination Certificate

active

06957587

ABSTRACT:
The transducer has a case which is formed by a support frame for supporting a fluid-conducting flow tube and by a case cap for encasing at least one bent segment of the flow tube which vibrates during operation of the transducer. The case cap comprises a channel-shaped first cap segment with a circular-arc-shaped first segment edge of predeterminable radius R and with an essentially identically shaped second segment edge. The first cap segment has a circular-arc-shaped cross section with a radius r less than the radius R of the first segment edge. The case cap further comprises an essentially plane second cap segment, which is connected via a circular-arc-shaped first segment edge with the first segment edge of the first cap segment, and a third cap segment, which is essentially mirror-symmetric with respect to the second cap segment and which is connected via a circular-arc-shaped first segment edge with the second segment edge of the first cap segment. The second and third segments each have a substantially greater flexural rigidity than the first cap segment. The use of the case cap permits the case of the transducer to be made as pressure-resistant as possible at minimum cost.

REFERENCES:
patent: 4876898 (1989-10-01), Cage et al
patent: 5301557 (1994-04-01), Cage et al
patent: 5996225 (1999-12-01), Ollila et al.
patent: 6286373 (2001-09-01), Lister et al.
patent: 6711958 (2004-03-01), Bitto et al.
patent: 1001254 (2000-05-01), None
patent: WO 01/33174 (2001-05-01), None
US 6,044,715, 04/2000, Ollila et al (withdrawn)

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