Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Projectile backstop
Patent
1995-04-06
1996-08-20
Shapiro, Paul E.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Projectile backstop
403282, 403343, 403375, F42B 606
Patent
active
055472001
ABSTRACT:
A nock system including an insert and a nock. The insert having an introduction end, a receiving end located opposite the introduction end, a substantially cylindrical body extending from the receiving end to the introduction end, and a receiving chamber having an opening at the receiving end and extending a distance into the cylindrical body. The receiving chamber is axially aligned and communicates with a threaded duct which extends farther through the cylindrical body toward the introduction end. The nock comprises a string receiving end for receiving a bow string and an engaging shank located opposite the string receiving end. The engagement shank has a shape and size permitting self-tapping, threaded engagement between the engaging shank and the threaded duct. A compression shank extends between the furrowed end and the engaging shank. The compression shank has a shape and size to produce a friction fit within the receiving chamber as the engaging shank is positioned within the threaded duct.
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Brochure, Archery, Easton, 1993-94 edition.
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