US PATENT SUBCLASS 411 / 8
WITH MEANS TO INDICATE APPLICATION OF PREDETERMINED STRESS-STRAIN

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

8WITH MEANS TO INDICATE APPLICATION OF PREDETERMINED STRESS-STRAIN {3}
9  DF  .~> Axially deformable member or portion {1}
13  DF  .~> Color indicator
14  DF  .~> Including gauge means

DEFINITION

Classification: 411/8

WITH MEANS TO INDICATE APPLICATION OF PREDETERMINED STRESS-STRAIN:

(under the class definition) Subject matter wherein a holding device includes a self-contained part which functions to permit measuring of, or to denote attainment or loss of a desired degree of, tension, compression, or torque in the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

402, for externally threaded fasteners (e.g., screws, bolts, etc.) provided with specific head driving structure.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for methods of measuring and testing stresses or strains in a bolt, and for measuring and testing apparatus not entirely a part of the fastener in situ, particularly

141+, for means for measuring a direct push or pull on a fastener.

116, Signals and Indicators, 200+, for indicator devices not entirely a part of a fastener in situ to indicate tension or compression thereon.

340, Communications: Electrical,

668, for electric signaling devices not entirely a part of a fastener in situ responsive to and controlled by the tension or stress in the fastener.