DIGITAL ANGLE MEASURING DEVICE

• US 20100043243A1
• Filed: 11/08/2008
• Published: 02/25/2010
• Est. Priority Date: 08/22/2008
• Status: Abandoned Application

• Current Assignee: Guilin Gemred Sensor Technology Co., Ltd.
• Original Assignee: Guilin Gemred Sensor Technology Co., Ltd.
• Inventors: JIANG, Changsong, LI, Guangjin
• Application Number:
  US12/267,562
• Publication Number:
  US 20100043243A1
• Time in Patent Office: Days
• US Class Current: 33/471
• CPC Class Codes: B43L 7/10 Plural straightedges relatively movable
• CPC Class Codes: G01B 3/04 rigid
• CPC Class Codes: G01B 3/563 Protractors for use in geodesy G01C1/00; protractor heads for drawing machines B43L13/08

Abstract

Provided is a digital angle measuring device, comprising an upper ruler having a first center hole, a lower ruler having a second center hole, a capacitive gate angle sensor, a display portion, a connecting base having a through hole, a rotary axis, a locking knob, and a stop screw, wherein the upper ruler and the lower ruler are connected to the rotary axis via the center holes, the display portion is connected to the rotary axis via the through hole, the locking knob is disposed on the connecting base and connected to the rotary axis, and the stop screw is disposed on one end of the rotary axis. The digital angle measuring device is easily installed and cost-effective.

Claims

1. A digital angle measuring device, comprising

an upper ruler (1) having a first center hole;

a lower ruler (2) having a second center hole;

a capacitive gate angle sensor;

a display portion (11);

a connecting base (5) having a through hole;

a rotary axis (3);

a locking knob (6); and

a stop screw (7);

wherein

said upper ruler (1) and said lower ruler (2) are connected to said rotary axis (3) via said center holes;

said display portion (11) is connected to said rotary axis (3) via said through hole;

said locking knob (6) is disposed on said connecting base (5) and connected to said rotary axis (3); and

said stop screw (7) is disposed on one end of said rotary axis (3).

2. The digital angle measuring device of claim 1, wherein the center hole of said lower ruler (2) is connected to said rotary axis (3).

3. The digital angle measuring device of claim 1, wherein a spring (4) is disposed between the center hole of said upper ruler (1) and that of said lower ruler (2).

4. The digital angle measuring device of claim 1, wherein said connecting base (5) is connected to said upper ruler (1).

5. The digital angle measuring device of claim 1, wherein

said capacitive gate angle sensor has a grid tray (9), a transmitter (10) and a receiver (8) and employs a three-piece structure;

said grid tray (9) is connected to said rotary axis (3);

said transmitter (10) and said receiver (8) are connected to said upper ruler (1); and

said display portion (11) is connected to said transmitter (10).

6. The digital angle measuring device of claim 1, wherein content on said display portion (11) is normally displayed as said display portion (11) is turned up side down.

7. The digital angle measuring device of claim 1, wherein an upper side of said upper ruler (1) is parallel to a lower side thereof.

8. The digital angle measuring device of claim 1, wherein scale line is marked on said upper ruler (1).

9. The digital angle measuring device of claim 1, wherein an upper side of said lower ruler (2) is parallel to a lower side thereof.

10. The digital angle measuring device of claim 1, wherein scale line is marked on said upper ruler (2).

11. A digital angle measuring device, comprising

a pair of rulers (1, 2) each having a first center hole;

a capacitive gate angle sensor;

a display portion (11);

a connecting base (5) having a through hole;

a rotary axis (3);

a locking knob (6); and

a stop screw (7);

wherein

said rulers (1, 2) are connected to said rotary axis (3) via said center holes;

said display portion (11) is connected to said rotary axis (3) via said through hole;

said locking knob (6) is disposed on said connecting base (5) and connected to said rotary axis (3); and

said stop screw (7) is disposed on one end of said rotary axis (3).

12. The digital angle measuring device of claim 11, wherein the center hole of one of said rulers (1, 2) is connected to said rotary axis (3).

13. The digital angle measuring device of claim 12, wherein said connecting base (5) is connected to the other ruler.

14. The digital angle measuring device of claim 11, wherein a spring (4) is disposed between the center holes of said rulers (1, 2).

15. The digital angle measuring device of claim 11, wherein

said capacitive gate angle sensor has a grid tray (9), a transmitter (10) and a receiver (8) and employs a three-piece structure;

said grid tray (9) is connected to said rotary axis (3);

said transmitter (10) and said receiver (8) are connected to said upper ruler (1); and

said display portion (11) is connected to said transmitter (10).

16. The digital angle measuring device of claim 11, wherein content on said display portion (11) is normally displayed as said display portion (11) is turned up side down.

17. The digital angle measuring device of claim 11, wherein an upper side of each of said rulers (1, 2) is parallel to a lower side thereof.

18. The digital angle measuring device of claim 11, wherein scale line is marked on said rulers (1, 2).