Expanded – threaded – driven – headed – tool-deformed – or locked-thr – With means to indicate application of predetermined... – Including gauge means
Patent
1994-09-08
1995-12-05
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
With means to indicate application of predetermined...
Including gauge means
411 8, 411383, 411395, 403 27, F16B 3102
Patent
active
054723027
ABSTRACT:
A bolt includes a movable pin in the center thereof. This pin can freely move up and down in the bolt. If the pin protrudes out of bolt a predetermined distance after the bolt is screwed into a blind bolt hole, then an inspector knows that the bolt is fully engaged. If, on the other hand, the bolt is not fully engaged, the pin will not protrude the predetermined distance out of the bolt. A second embodiment of the similar invention is a stud having an indicator pin. In third and fourth embodiments, the bolts and studs have indicator pins including grease zerks. These grease zerks allow the holes to be filled with grease to prevent damage to the hole due to corrosion.
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