US 4,057,806 AGranted

Apparatus for analyzing movements of an animate or inanimate object

AssigneeCS na BSFS

InventorsVassil Lazarov Furnadjiev, Boris Krestanov Samardjiev

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Abstract

An arrangement is described for rapidly and accurately analyzing the movements of a barbell or other weight. The object is positioned in a suitable holder, which is connected by means of a pair of strands to the periphery of a first disc secured to a torsion-biased shaft. The strands extend, intermediate their ends, through opposed ends of the crosspiece of a T-shaped pendulum whose central arm is secured at its free end to a second disc, such second disc being in turn secured to a splined front end of the shaft. A pair of internally toothed racks are carried by the second disc for toothed engagement with the splined end of the shaft, with the racks being confined for movement in mutually perpendicular directions to resolve the motion of the holder and thereby of the object into orthogonal planes. Facilities are provided for recording the separate movements of the first and second racks along a common first coordinate of a recording medium as the medium is advanced along the other coordinate.

Claims6

Dependent claims

In an apparatus for analyzing movements of a prescribed object, a holder for carrying the object, a shaft having front and rear ends and exhibiting a splined outer surface at its front end, torsion-applying means coupled to the shaft and supporting the shaft for bi-directional rotation under load about a first axis, a first disc fixedly supported on the shaft, a second disc fixedly supported on the shaft forwardly of the first disc and disposed around the forward splined end of the shaft, a T-shaped element having a central arm secured to and extending outwardly from the second disc, first and second strands individually extending from a prescribed point of the holder to the periphery of the first disc through the respective ends of the crossarm of the T-shaped element for effecting a rotation of the shaft upon a movement of the holder, first and second racks each having internal teeth, means carried by the second disc for individually supporting the first and second racks in toothed engagement with the splined front end of the shaft for movement in mutually perpendicular directions, and recording means associated with the first and second racks for generating separate indicia instantaneously indicative of the then-occurring movements of the respective racks.

Dependencies are inferred from the claim text.