Two-speed continuous tangent screw

Details Two-speed continuous tangent screw Two-speed continuous tangent screw

1996-03-07

1997-11-25

Fulton, Christopher W.

Geometrical instruments

Straight-line light ray type

Level

33285, 33 1N, 33281, G01C 102

Patent

active

056898924

ABSTRACT:
An adjustment mechanism for a telescope of a theodolite. The mechanism includes a worm gear that is coupled to a friction gear of the theodolite. The friction gear is coupled to the telescope so that any rotation of the gear will induce a corresponding movement of the scope. The worm gear is coupled to a linear screw and an outer sleeve. The linear screw has a shaft that can push the worm gear and rotate the friction gear to provide a fine movement of the telescope. The linear screw also has a stop that engages an arm of the sleeve. Continued rotation of the linear screw rotates the engaged sleeve and the worm gear to provide a coarse movement of the telescope. The linear screw is connected to a knob which can be rotated by an operator. The operator can induce a coarse movement of the telescope by turning the linear screw so that the stop engages the sleeve. The operator can induce a fine movement of the telescope by rotating the knob in a reverse direction so that the linear screw pushes the worm gear and rotates the friction gear.

REFERENCES:
patent: 2667693 (1954-02-01), Baker
patent: 4084327 (1978-04-01), Kooi
patent: 4656878 (1987-04-01), Iwai et al.
patent: 4752126 (1988-06-01), Fujii

Affiliated with

Also associated with

Rating

Two-speed continuous tangent screw does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-speed continuous tangent screw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-speed continuous tangent screw will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2097352