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US 8,845,256 B2Granted
Fastener and fastener assembly with discontinuous threadform
AssigneeThe Boeing Company
InventorKevin O. Gaw
Life of this patent
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Abstract
The disclosure provides in one embodiment for a fastener comprising a cylindrical shaft, a head attached to the shaft, and two or more external longitudinal threadforms, where each threadform comprises a plurality of spaced protrusions forming a separate sinusoidal path around the shaft. When the shaft is inserted into a corresponding mating receptacle, a combination of the shaft and the mating receptacle provides two or more pitches. The disclosure further provides for a fastener assembly.
Claims11
A fastener comprising:
- a cylindrical shaft;
- a head attached to the shaft;
- and,
- two or more external, longitudinal threadforms, each threadform comprising a plurality of spaced protrusions forming a separate helical path around the shaft;
- wherein when the shaft is inserted into a corresponding mating receptacle, a combination of the shaft and the mating receptacle provides two or more pitches, and further wherein the plurality of spaced protrusions comprise a plurality of locking spaced protrusions and a plurality of non-locking spaced protrusions, wherein the plurality of locking spaced protrusions are proximate the head and are of a greater size compared to the non-locking spaced protrusions, such that when the shaft is inserted into the corresponding mating receptacle, the locking spaced protrusions and the corresponding mating receptacle form a locking mechanism that locks the corresponding mating receptacle to the shaft.
2 more elements
Dependencies are inferred from the claim text.