Underwater sight for a spear gun or the like

Details Underwater sight for a spear gun or the like Underwater sight for a spear gun or the like

1976-04-28

1977-10-25

Aegerter, Richard E.

Geometrical instruments

Straight-line light ray type

Multisight line

33244, 362110, F41G 146, F41G 134

Patent

active

040550001

ABSTRACT:
An elongated tube, adapted to be longitudinally supported by a spear gun, or the like, is provided with a transparent transverse partition at its forward end portion for preventing water entering the major portion of the tube when its forward end portion is immersed. A battery powered lamp, secured by a bracket within the water excluded end portion of the tube, illuminates a target through the transparent partition. A sight area, scored on the transparent partition, visually indicates when the gun is aligned with the target.

REFERENCES:
patent: 982280 (1911-01-01), Lewis
patent: 1215171 (1917-02-01), Lewis
patent: 1376357 (1921-04-01), Place
patent: 2528080 (1950-10-01), Robertson
patent: 3656845 (1972-04-01), Koch-Bossard et al.
patent: 3872853 (1975-03-01), Nakatani

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