Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Double-ended
Reexamination Certificate
2002-09-23
2004-11-02
Lagman, Frederick L. (Department: 3673)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Double-ended
C411S383000, C411S395000
Reexamination Certificate
active
06811364
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a quick connect system for applications involving two objects to be connected by threaded engagement, without requiring the numerous turnings/rotations required when the objects are fully threaded. Each of the two objects is partially threaded. The invention has application in, for example, drill bits, clamps, hose connectors, nut/bolt assemblies, mixing shafts, or any other tool system or application requiring a threaded male member to be inserted into a corresponding threaded female member, especially in situations requiring repeated engagement and disengagement of the threaded connection, such as in concrete drilling.
SUMMARY OF THE INVENTION
The invention relates to a connector assembly including a shaft and a coupler that are adapted for releasable engagement. The shaft has an external surface having alternating threaded and non-threaded surfaces. The threaded and non-threaded surfaces form a non-continuous screw thread that follows a contour of a full helical screw thread. The coupler has an internal bore with alternating threaded and non-threaded surfaces. The threaded surfaces of the coupler complement the threaded surfaces of the shaft, and the coupler is sized to fit in threaded connection with the shaft.
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Lagman Frederick L.
Merchant & Gould P.C.
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