Binoculars of the center focus type with lock means for locking

Details Binoculars of the center focus type with lock means for locking Binoculars of the center focus type with lock means for locking

1990-09-27

1992-04-07

Henry, Jon W.

Optical: systems and elements

Compound lens system

Telescope

359823, G02B 706

Patent

active

051032481

ABSTRACT:
Binoculars of the center focus type having a pair of bodytubes connected together through an axis shaft comprise a focus adjusting rotational member rotatably supported on the axis shaft, a moving member supported on the axis shaft in proximity to the rotational member and provided for axial movement along the axis shaft, a mechanism for arbitrarily moving the moving member only axially, and a lock mechanism responsive to the movement of the moving member to preclude the rotation of the rotational member.

REFERENCES:
patent: 4229074 (1980-10-01), Nonogaki
patent: 4818086 (1989-04-01), Moore
patent: 4867533 (1989-09-01), Akin

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