Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1990-08-28
1992-04-07
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181249, 181252, 181264, F16K 4702, F16L 5502
Patent
active
051019302
ABSTRACT:
A muffler for attenuating pulsations within the hydraulic fluid of an hydraulic elevator includes a plurality of compressible elements for absorbing pressure pulsations within the fluid and a baffle for ensuring that the flow of fluid contacts the elements sufficiently to absorb such pulsations, the baffle allowing a certain amount of flow to pass therethrough so that the pressure drop around the baffle is not so extreme so as to cause the muffler to cease to function.
REFERENCES:
patent: 3545565 (1970-12-01), McCaffrey
patent: 4164266 (1979-08-01), Collin et al.
patent: 4671380 (1987-06-01), Henderson et al.
Bialy Louis
Fargo Richard N.
Ray Sib S.
Ryder Henry
Dang Khanh
Doigan Lloyd D.
Hix L. T,.
Otis Elevator Company
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