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US 4,428,238 AGranted
Vibrating test screening apparatus
AssigneeTeam, Inc.
InventorRobert Tauscher
Life of this patent
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Abstract
Apparatus for subjecting a test specimen to vibrational forces has a base, a first preselected massmounted for reciprocal movement relative to the base and a second preselected mass elastically coupled to the first mass to produce a resonant condition at a preselected frequency of reciprocal movement.
Claims2
Apparatus for subjecting a test specimen to vibrational forces, comprising:
- a base;
- first and second preselected masses;
- means for mounting the first and second masses for reciprocal movement relative to the base;
- means for attaching a test specimen to the first mass for movement therewith;
- means for actuating the first and second masses reciprocally;
- the mounting means comprising first and second rods extending substantially parallel to the direction of reciprocal movement to elastically couple the actuating means to the first and second masses, respectively;
- means for threading the first and second masses onto the first and second rods, respectively;
- and
- means for locking the masses at preselected locations on the rods, the locking means including a pair of collars threaded onto the respective rods and means for urging the first and second masses axially relative to the collars.
6 more elements
Dependencies are inferred from the claim text.