Patent Application
20100271637
1. Field of the Invention
The present invention relates to a theodolite, and more particularly to a theodolite with laser indicators generating laser beams to indicate a predicted position for improved measuring accuracy.
2. Description of Related Art
A conventional theodolite has a base, a body and three laser indicators. The body is fixed on the base and has three orthogonal surfaces. The three laser indicators are respectively, rotatably mounted on the three orthogonal surfaces of the body. The three laser indicators respectively generate three orthogonal laser beams to indicate X-, Y- and Z-axes to improve 3-D measuring and precisely display a predicted position.
However, the body is fixed on the base and cannot be rotated. Therefore, laser beams from the three laser indicators only can be adjusted one by one and cannot be directly rotated on the body to adjust an indicating angle. Furthermore, the conventional theodolite has three laser indicators, which are difficult to simultaneously calibrate.
To overcome the shortcomings, the present invention tends to provide a theodolite with laser indicators having a rotatably body to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide a theodolite with laser indicators generating laser beams to indicate a predicted position for improved measuring accuracy.
The theodolite with laser indicators comprising a seat, a body, a rotating case, a horizontal laser indicator and a vertical laser indicator. The seat can be set on a tripod and has a level base. The level base is adjustable and can be adjusted to a virtual level. The body is rotatably mounted on the level base and has a frame and two arms. The frame has a top. The two arms respectively extend from the top of the frame. The rotating case is rotatably mounted between the two arms of the body and has a top and a bottom. The horizontal laser indicator is rotatably mounted on the top of the rotating case and generates a horizontal laser beam. The vertical laser indicator is rotatably mounted on the bottom of the rotating case and generates a vertical laser beam. The horizontal and vertical laser indicators indicate a predicted position for improved measuring accuracy.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The seat (10) has a bottom, three adjusting knobs and a level base (11). The bottom of the seat (10) may be set on a tripod. The three adjusting knobs are rotatably mounted on the bottom. The level base (11) is adjustable and is adjustably mounted on the three adjusting knobs and can be adjusted to a virtual level by the three adjusting knobs.
The body (12) is rotatably mounted on the level base (11) and has a frame (121), two arms (122), a laser controller (123) and a theodolite controller (124). The frame (121) is rotatably mounted on the level base (11) and has a top, a front surface and a rear surface. The two arms (122) respectively extend from the top of the frame (121). The laser controller (123) is mounted on the rear surface of the frame (121) and can control the laser indicators (20). The theodolite controller (124) is mounted on the front surface of the frame (121) and can control the theodolite.
The rotating case (13) is rotatably mounted between the arms (21, 22) and can be turned to adjust a locating angle, and has perpendicular planes, and may has a front, a rear, a top, a bottom, a through hole (131) and a laser recess (132). The front and the rear of the rotating case (13) are perpendicularly defined between the top and the bottom of the rotating case (13). The through hole (131) is formed through the front and the rear of the rotating case (13), and may be a circular hole.
The laser recess (132) is formed in the bottom of the rotating case (13) adjacent to the front and has a side wall and a slot. The side wall is perpendicular to the front of the rotating case (13). The slot is formed in the front of the rotating case (13) and communicates with laser recess (132).
With further reference to
The telescope (30) is mounted in the through hole (131) of the rotating case (13) and has an eyepiece (31). The eyepiece (31) is mounted on the rear of the rotating case (13).
In use, the two laser indicators (20) can are used and adjusted independently or simultaneously as is well known in the art.
With further reference to
With reference to
Furthermore, the theodolite also has the telescope (30) being controlled by the theodolite controller (124) to make a transit survey and provide a multi-use theodolite.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
