Measuring and testing – Vibration – Vibrator
Patent
1991-03-11
1992-10-13
Williams, Hezron E.
Measuring and testing
Vibration
Vibrator
73 12, G01M 708, B06B 112, B06B 118
Patent
active
051545675
ABSTRACT:
A vibration assembly comprising a housing (12) having a central cavity (20) and a pair of side cavities (22, 24) of radially smaller dimension than that of the central cavity, all of which extends axially about an axis (26) from opposed ends of the central cavity. A piston (50) is housed within the cavities (20, 22, 24) and includes a mass (52) disposed within the central cavity (20) and a pair of supports (54, 56) which are disposed within respective ones of the cavity pair (24, 22) and which extend axially from the mass. The supports (54, 56) have radial dimensions which are substantially the same as those of the pair of cavities (22, 24). The mass (52) and the supports have axial dimensions which are substantially less than those respectively of the central cavity means and of the pair of cavities (20, 22, 24) for enabling the piston (50) to move axially within the cavities. Air inlets (61, 62) in the housing and conduits (66, 68) in the piston enable the piston to reciprocate within the housing for repeated impact against an impactor (38) for transmission of energy thus obtained to a test table and an item under test.
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Baker, deceased Richard L.
Weibezahn Karl S.
Weinmann, Jr. Robert H.
Denson-Low W. K.
Finley Rose M.
Grunebach Georgann S.
Hughes Aircraft Company
Streeter William J.
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