Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Comprising a thread lock
Patent
1988-12-05
1990-03-13
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Comprising a thread lock
411247, 411324, 411947, F16B 3934, F16B 39284
Patent
active
049079247
ABSTRACT:
A backward starting locknut comprises a polygonal-shaped metal nut having a threaded axial bore extending from a front end face normal thereto toward a recess formed in an opposite or backside of the nut body. A locking insert of resilient plastic material having a threaded bore aligned with that of the nut is seated in the recess and includes an annular, thick wall portion secured within the recess and an annular, thin wall portion integrally joined to the thick wall portion and extends outwardly from the recess and is provided with a threaded bore. The metal nut includes an annular wall section defining the recess and the wall section is deflected radially inwardly to compress the thick wall portion of the plastic insert and thereby constrict an inner portion of the threaded bore in order to establish a prevailing torque when a threaded rod is fully engaged in the bore of the insert. The outwardly extending, annular, thin wall portion of the insert permits a threaded rod to be threadedly engaged in the bore from the backside of the locknut so that the locknut can be started onto the threaded rod from the backside and threaded for a distance on the rod before prevailing torque is encountered as the rod end reaches the constricted inner, thick wall portion of the plastic insert.
REFERENCES:
patent: 2393323 (1946-01-01), Hungerford et al.
patent: 3520342 (1970-07-01), Scheffer
patent: 4019550 (1977-04-01), DeHaitre
MacLean-Fogg Company
Wilson Neill R.
LandOfFree
Backward starting locknut does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Backward starting locknut, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backward starting locknut will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-48128