System for revealing cracks in cylindrical members such as bolts

Details System for revealing cracks in cylindrical members such as bolts System for revealing cracks in cylindrical members such as bolts

1980-03-24

1981-03-03

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73 37, 116 70, 340626, C08B 2100

Patent

active

042544157

ABSTRACT:
An elongated cylindrical member, such as an axle, a bolt, stud, rivet, supporting column, etc., has means for the in situ detection and indication of cracks therein. The member is generally solid and includes, in accordance with the invention, a cavity extending inwardly from at least one end of the member and terminating in a bottom surface of the cavity. A plurality of holes extend inwardly from the bottom surface of the cavity and are disposed in circular arrangement around the bottom surface of the cavity and adjacent to the periphery of the member. A ring member is disposed in the cavity, the bottom surface of the ring member being spaced from the bottom surface of the cavity to define a chamber therebetween. An opening extends through the ring member from the top surface to the bottom surface thereof, and valve means are inserted in the opening to permit the insertion of gas under pressure into the chamber and into the holes. When a crack develops in the member and crosses one of the holes, the gas under pressure will escape through the crack from the chamber. The member includes a detector for determining that the gas has escaped from the chamber and holes to thereby detect the crack.

REFERENCES:
patent: 1488982 (1924-04-01), Goyne
patent: 4145915 (1979-03-01), Oertle et al.
patent: 4201974 (1980-05-01), Fima

Affiliated with

Also associated with

Rating

System for revealing cracks in cylindrical members such as bolts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for revealing cracks in cylindrical members such as bolts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for revealing cracks in cylindrical members such as bolts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-82248