Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Threaded fastener stress
Reexamination Certificate
2005-05-17
2005-05-17
Noori, Max (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Threaded fastener stress
C073S760000, C411S008000, C411S014000, C411S402000
Reexamination Certificate
active
06892585
ABSTRACT:
A variably amplified load indicating fastener includes a fastener (100) detachably secured to a load indicator via a base member. The fastener (100) has an abutment which is moved by a change in length under an applied load. The load indicator includes a dial plate (16), a needle (24) pivotally supported by the plate (16), a compensating slot (36), a driving slot, an elongated U-shaped element (50) disposed in the direction in which the load is applied when the fastener (100) is in use, and a first reference mark (40a). One side of the U is rigidly attached to the fastener. The closed end of the U is proximate to and movable by the abutment. The other side of the U extends through the compensating slot (36) and the driving slot (26). The needle (24) is operatively coupled to the outer end of said second side. A sleeve with a second reference mark fits over the outer circumference of both the load indicator and the base member.
REFERENCES:
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patent: 4879819 (1989-11-01), Johnston et al.
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patent: 5222849 (1993-06-01), Walton
patent: 5584627 (1996-12-01), Ceney et al.
patent: 5885040 (1999-03-01), Parker
patent: 6055737 (2000-05-01), Sweaney
patent: 06288847 (1994-10-01), None
Ellington Alandra
Goltry Michael W.
Noori Max
Parsons Robert A.
Parsons & Goltry
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