Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Pawl and ratchet
Reexamination Certificate
2002-07-12
2004-01-27
Wilson, Neill (Department: 3679)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Pawl and ratchet
C411S115000, C411S294000, C411S329000
Reexamination Certificate
active
06682281
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to fasteners and more particularly pertains to a new locking fastener apparatus for coupling objects together.
2. Description of the Prior Art
The use of fasteners is known in the prior art. U.S. Pat. No. 1,195,468 describes a nut lock. Another type of fastener is U.S. Pat. No. 1,183,966 comprising a nut having a spring-actuated latching mechanism for gripping onto the threads of a bolt.
While these devices fulfill their respective, particular objectives and requirements, the need remains for a system that incorporates a more positive locking mechanism.
SUMMARY OF THE INVENTION
The present invention meets the needs presented above by combining a latching mechanism on a nut that engages slots in a correlating bolt.
Still yet another object of the present invention is to provide a new locking fastener apparatus that incorporates a design that more positively ensures that coupled objects will not loosen or separate during use.
Even still another object of the present invention is to provide a new locking fastener apparatus that is unyielding to vibration that often loosens nuts and bolts.
To this end, the present invention generally comprises a bolt having a head portion and a shaft portion with a plurality of shaft slots along the shaft. A nut has a threaded hole for threadably receiving the shaft portion of the bolt. A nut slot is centrally positioned across a width of a first side portion of the nut. The nut has a nut lock bore extending inwardly through the nut slot from the first side portion towards a central hole of the nut. The nut includes a nut lock member for movably positioning in the nut lock bore of the nut. The inner end of the nut lock member has a catch portion that is engagable with the shaft slots. A lever member pivotally coupled to the nut is positioned in the nut slot, with a first end attached to the nut lock member and a second end abutting a biasing member which biases the catch portion into one of the shaft slots to facilitate locking the two together until.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
The objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure.
REFERENCES:
patent: 969434 (1910-09-01), Wilt
patent: 1099005 (1914-06-01), Young
patent: 1155233 (1915-09-01), Hammond
patent: 1183966 (1916-05-01), Flake
patent: 1195468 (1916-08-01), Hervert
patent: 1238012 (1917-08-01), Hall
patent: 1246631 (1917-11-01), Macy
patent: 1252088 (1918-01-01), Chism
patent: 1640374 (1927-08-01), Russell
patent: 1703947 (1929-03-01), Nation
patent: 1743262 (1930-01-01), Bishop
patent: 2672358 (1954-03-01), Wienola
patent: D416787 (1999-11-01), Mensour et al.
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