Testing apparatus of mechanical endurance

Details Testing apparatus of mechanical endurance Testing apparatus of mechanical endurance

2008-10-23

2010-10-26

Caputo, Lisa M (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

Reexamination Certificate

active

07819018

ABSTRACT:
An apparatus for testing mechanical endurance includes a bed for installing a workpiece, a clipping imitator capable of clipping a clipping ring of the workpiece, a hinging imitator capable of engaging with a hinge of the workpiece thereby making the workpiece tend to rotate, a cam, an oscillating rod following the cam, a pressure sensor capable of receiving pressure from the workpiece, a first arithmometer for taking count of pressure dropping the pressure sensor detects, and a second arithmometer for taking count of cam cycles. The oscillating rod includes first and second arms. The second arm engages the cam and can impel the clipping imitator to detach from the clipping ring. The first arm can press the workpiece down. In a cam cycle, if the workpiece does not break, the count of the first arithmometer equals to the count of the second arithmometer; or if breaks, the counts are different.

REFERENCES:
patent: 4709605 (1987-12-01), Clark
patent: 4776205 (1988-10-01), Brooks et al.
patent: 6383057 (2002-05-01), Bartlett et al.

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