Amusement devices: games – Problem eliciting response
Patent
1982-04-01
1983-05-03
Shapiro, Paul E.
Amusement devices: games
Problem eliciting response
30337, F41B 502
Patent
active
043818668
ABSTRACT:
An arrowhead assembly with removable blades for attachment to the forward end of an arrow shaft for archery shooting is disclosed which provides self-aligning and self-centering of the arrowhead upon the arrow shaft. The self-aligning and self-centering is achieved by a non-deformable blade locking ring fitting over a portion of a blade carrying body, the locking ring having an undercut forward portion fitting loosely over a rearward extension of each of the blades and the rearward end of the undercut having an acute angle for forcible engagement against an angle at the rear end of each blade rearward extension. A compressible, resilient ring fits over the blade carrying body adjacent the rearward side of the non-deformable blade locking ring. A mating bevel on the blade carrying body is positioned to engage an arrow shaft insert receiving cylinder chamfer whereby upon tightening the arrowhead assembly upon the arrow shaft, the compressible ring is compressed and uneven forces by the compressible ring are accommodated by canting of the non-deformable blade locking ring thereby providing solid engagement of the mating bevel and the chamfer while tightly holding the removable blades in position.
REFERENCES:
patent: 2940758 (1960-06-01), Richter
patent: 3741542 (1973-06-01), Karbo
patent: 3910579 (1975-10-01), Sprandel
patent: 4036499 (1977-07-01), Sherwin
patent: 4146226 (1979-03-01), Sorensen
patent: 4210330 (1980-07-01), Kosbab
patent: 4341391 (1982-07-01), Anderson
Archers Bible, 1966-1967, 3-1967, p. 76, Bod-Kin Model "D".
Shapiro Paul E.
Speckman Thomas W.
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