CA2167255A1 - Structure of cursor control device - Google Patents
Structure of cursor control deviceInfo
- Publication number
- CA2167255A1 CA2167255A1 CA002167255A CA2167255A CA2167255A1 CA 2167255 A1 CA2167255 A1 CA 2167255A1 CA 002167255 A CA002167255 A CA 002167255A CA 2167255 A CA2167255 A CA 2167255A CA 2167255 A1 CA2167255 A1 CA 2167255A1
- Authority
- CA
- Canada
- Prior art keywords
- wheel
- ball
- circuit board
- roller
- spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0312—Detection arrangements using opto-electronic means for tracking the rotation of a spherical or circular member, e.g. optical rotary encoders used in mice or trackballs using a tracking ball or in mouse scroll wheels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03543—Mice or pucks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0362—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/14—Operating parts, e.g. turn knob
- H01H2019/146—Roller type actuators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
A structure of cursor control device includes a body accommodating a circuit board and having a circular hole in a bottom side for containing a ball which may move freely therein. The body further has a pair of encoders, each of which consists of a wheel, a light source and a sensor. The wheel, light source and sensor may be secured on a securing seat which are provided with insert means at a bottom side thereof for insertion into corresponding holes in the circuit board. The securing seat further supports an idle wheel which is disposed between a roller at an end of a spindle of the wheel and the ball for transmitting rolling actions of the ball to the roller, so that when the ball rotates, the wheel is caused to synchronously rotate therewith.
The arrangement of the idle wheel enables the spindle of the wheel to be located at a relatively higher position so that the diameter of the wheel may be increased to achieve precise reading of signals and the wheel may be mounted on the circuit board before tin soldering.
The arrangement of the idle wheel enables the spindle of the wheel to be located at a relatively higher position so that the diameter of the wheel may be increased to achieve precise reading of signals and the wheel may be mounted on the circuit board before tin soldering.
Description
216725~
TIT~E: STRUCTURE OF CURSOR CONTROL DEVlCE
BACKGROUND OF THE INVENTION
(a) Field of the Invention:
The present invention relates generally to a cursor control device construction, and more particularly to a cursor control device construction which facilitates mounting of the wheels, light sources and sensors on a circuit board-and which permits a spindle of the wheel to be disposed at a rela~ively higher position to achieve --precise reading:of signals and-to~--enable- the wheel to be mounted on the circuit board prior to tin soldering.
(b) Descri~tion of the Prior Art:
Conventional cursor control devices may be generally classified into three màin types, namely, mechanical, optical and.semi-optical.
In semi-optical cursor control devices, the construction generally includes a body containing a circuit board~
therein and having a hole in a bottom side thereof for mounting of a ball which may roll freely therein. The body also accommodates a couple of encoders, each . including a wheel which has a spindle~extending~in~ the direction of the ball, the spindle being provided with a roller which is in a frictional relationship with the ball, such that the wheel may rotate synchronously therewith. The wheel is provided with a light source 21672~
and a sensor on both sides. The light emitted by the light source is just perpendicular to the spindle, and the sensor is disposed in the proximity of the periphery of the wheel so as to receive light passing via the periphery of the wheel. When the wheel rotates, some of the light emitted by the light source will be blocked by the wheel while some will pass via the periphery thereof to reach the sensor. These two conditions may be respectively represented by 0 and 1. When the wheel performs continuous rotation (whether clockwisely or counter-clockwiselyl~ the following four signals will be obtained: (1, 1), (0, 1), (0, 0) and (1, 0). After undergoing conversion by means of the circuit board, these signals may control a cursor to move across the screen of a display. The two encoders are provided to respectively control the cursor to move across the screen horizontally and vertically, or in any other direction.
However, since the roller at one end of the spindle of the wheel rubs against the ball so that the ball and the wheel may synchronously rotate, the spindle has to be maintained at a certain height in order that the roller may always be in contact with the ball withln a suitable extent. In other words, the wheel may have a lower rim thereof in contact with the circuit board below when mounted thereon. Therefore, the wheel cannot 216~2~
be mounted on the circuit board before the circuit board has undergone tin soldering since the wheel, due to its material and its position on the circuit board, may be easily damaged during the process. Besides, as the spindle of the wheel has to be maintained at a certain height, the diameter of the wheel is restricted and cannot be increased as desired. If the diameter of the wheel is prolonged, the wheel will certainly have the lower rim thereof touching the body. However as reading of signals may become more precise with the increase of the diameter of the wheel, it is imperative to find a solution to solve the above-mentioned problem.
Furthermore, the relative relationship among the wheels, light sources, and sensors will greatly affect the precision of signal reading. If these components are not properly mounted and positioned on the body of the cursor control device, signal reading will be defective or will even fail. But in the prior art, these components are individually welded to the circuit board directly so that it is necessary to adjust their position to ensure that they are properly positioned on the circuit board, which is very inconvenient and time-consumptive.
SUMMARY OF THE INVENTION
Accordingly, a primary object of the present invention is to provide a cursor control device 21fi72~5 construction wherein a wheel has a larger diameter and a spindle of the wheel may be arranged at a relatively higher position to permit precise reading of signals and to enable the wheel to be disposed above a circuit board and to be mounted on the circuit board before the circuit board is subjected to tin welding.
Another object of the present invention is to provide a cursor control device construction wherein the wheels, light sources and sensors may be conveniently and speedily mounted and positioned on the circuit board without the need for adjustment as in the prior art.
To achieve the above-mentioned objects, the cursor control device construction according to the invention essentially comprises a pair of encoders, each of which consists of a securing seat with a plurality of mountings for supporting a wheel and a couple positioning slots for securing a light source and a sensor, so that the wheel, light source and sensor may be mounted on the securing seat before the securing seat is mounted onto a circuit board by means of insert means which are inserted into corresponding holes in the circuit board. The securing seat further supports an idle wheel which is located intermediate a roller at one end of a spindle of the wheel and the ball for transmitting rolling actions of the ball to the roller so that the wheel may synchronously rotate with the 216725~
ball. The provision of the idle wheel enables the spindle of the wheel to be located at a relatively higher position so that the diameter of the wheel may be increased to achieve precise reading of signals and the wheel may be mounted on the circuit board prior to tin welding.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other features and advantages of the present invention will be more clearly understood from the following detailed description and the accompanying drawings, in which, Fig. l is a perspective view of the cursor control device construction according to the present invention in an assembled state;
Fig.lA is an enlarged view of part A of Figure 1;
Fig. 2 is a perspective exploded view of the present invention;
Fig. 2A is an enlarged view of part A of Figure 2;
Fig. 2B is an enlarged view of part B of Figure 2;
Fig. 3 is a top view of the encoders and a ball of the cursor control device construction according to the present invention, and Fig. 4 is a side view of the encoders and the ball of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Figs. l and 2, the cursor control 21672~
device construction according to the present invention essentially comprises a body lO, a cap 11 having a plurality of push buttons 12 for sealing the interior of the body 10, and a circuit board 13 accommodated within the body 10. The body 10 further has a circular hole 14 formed in a bottom side thereof for accommodating a ball 15, which may roll freely within the hole 14.
The body 10 is provided with a pair of encoders 16.
Each encoder 16 includes a wheel 17 having a spindle 18 extending in the direction of the ball 15, the spindle 18 having one end thereof fixedly provided with a roller 19. A securing seat 20 is disposed below the wheel 17 and has a plurality of plate-like mountings 24, 25, 26 respectively having slots 21, 22 and 23 for pivotally supporting the spindle 18, such that the wheel 17 may be disposed beside an inner side of the mounting 24 and the roller 19 may be.~disposed intermediate the mountings Z5 - - and 26. ~he mountings 25 and 26 are~ fur.ther .. .. = ~= . . . ~
respectively provided with individual notches 27, 28 in a vertical side thereof at a same elevation. An idle wheel 29 is disposed at a position lower than the spindle 19, with a spindle 30 at both ends thereof pivotally supported by the notches 27, 28. The idle wheel 29 is located between the roller 19 and the ball 15 and is in contact with both the roller 19 and the ball 15, so that the idle wheel 29 may transmit the 216-72~
rolling action of the ball 15 to the roller 19 (see Figs. 3 and 4).
A light source 31 (such as an LED) and a sensor 32 are individually disposed on both sides of the wheel 17.
The light source 31 and the sensor 32 are respectively inserted into positioning slots 33 and 34 of the securing seat 20. Two through holes 35 are formed in one side of the positioning slot 34 to allow light emitted from the light source 31 to reach the sensor 32 via the wheel 17. The positioning slots 33 and 34 have individual positioning plates 36 and 37 at an upper end thereof for positioning the light source 31 and the sensor 32 respectively. ~ - -The securing seat 20 has at least two hook-like : -lS lugs 38 and a positioning pin 39 projecting from a bottom side thereof. The wheel 17, light source 31 and sensor 32 are positioned properly on the securing seat ---.-20 before the securing seat 20 is mounted onto *he circuit board 13 by means of the lugs 38 and positioning~
pin 39 which are individually inserted into insert holes 40 and a positioning hole 41 correspondingly formed in the circuit board 13.
The light source 31 is disposed such that its light is just perpendicular to the wheel 17, and the sensor 32 is located near the periphery of the wheel 17 for receiving the light emitted by the light source 31 via _ . .
21~25~
the periphery of the wheel 17. When the wheel 17 rotates, some of the light emitted by the light source 31 will be blocked by the wheel 17 while some will pass via the periphery thereof to reach the sensor 32. These two conditions may be respectively represented by 0 and 1. Therefore, when the wheel 17 performs continuous rotation (whether clockwisely or counter-clockwisely), four signals may be obtained: (1, 1), (0, 1), (0, 0) and (1, 0). These signals are being converted via the circuit board 13 to control the movement of a cursor.
Since there are provided two encoders 16, they may respectively control the horizontal and vertical movements of the cursor, which may move in whatever direction across the screen.
The arrangement of the idle wheel 29 is to enable the spindle 18 of the wheel 17 to be disposed at a relatively higher position so that the diameter of the wheel 17 mav be increased to achieve precise reading of signals. In addition, the wheel 17 may be raised above the circuit board 13 so that it may be mounted on the circuit board 13 before the circuit board 13 undergoes tin soldering. Furthermore, the wheel 17, light source 3 and sensor 32 may be fitted on the securing seat first before the securing seat 32 is assembled to the circuit board 13, thus achieving easy assembly and eliminating the need for adjustment as in the prior art.
2167~3 Although the present invention has been illustrated and described with reference to the preferred embodiment thereof, it should be understood that it is in no way limited to the details of such embodiment but is capable-of numerous modifications within the scope of the appended claims.
.... . . .. ..
TIT~E: STRUCTURE OF CURSOR CONTROL DEVlCE
BACKGROUND OF THE INVENTION
(a) Field of the Invention:
The present invention relates generally to a cursor control device construction, and more particularly to a cursor control device construction which facilitates mounting of the wheels, light sources and sensors on a circuit board-and which permits a spindle of the wheel to be disposed at a rela~ively higher position to achieve --precise reading:of signals and-to~--enable- the wheel to be mounted on the circuit board prior to tin soldering.
(b) Descri~tion of the Prior Art:
Conventional cursor control devices may be generally classified into three màin types, namely, mechanical, optical and.semi-optical.
In semi-optical cursor control devices, the construction generally includes a body containing a circuit board~
therein and having a hole in a bottom side thereof for mounting of a ball which may roll freely therein. The body also accommodates a couple of encoders, each . including a wheel which has a spindle~extending~in~ the direction of the ball, the spindle being provided with a roller which is in a frictional relationship with the ball, such that the wheel may rotate synchronously therewith. The wheel is provided with a light source 21672~
and a sensor on both sides. The light emitted by the light source is just perpendicular to the spindle, and the sensor is disposed in the proximity of the periphery of the wheel so as to receive light passing via the periphery of the wheel. When the wheel rotates, some of the light emitted by the light source will be blocked by the wheel while some will pass via the periphery thereof to reach the sensor. These two conditions may be respectively represented by 0 and 1. When the wheel performs continuous rotation (whether clockwisely or counter-clockwiselyl~ the following four signals will be obtained: (1, 1), (0, 1), (0, 0) and (1, 0). After undergoing conversion by means of the circuit board, these signals may control a cursor to move across the screen of a display. The two encoders are provided to respectively control the cursor to move across the screen horizontally and vertically, or in any other direction.
However, since the roller at one end of the spindle of the wheel rubs against the ball so that the ball and the wheel may synchronously rotate, the spindle has to be maintained at a certain height in order that the roller may always be in contact with the ball withln a suitable extent. In other words, the wheel may have a lower rim thereof in contact with the circuit board below when mounted thereon. Therefore, the wheel cannot 216~2~
be mounted on the circuit board before the circuit board has undergone tin soldering since the wheel, due to its material and its position on the circuit board, may be easily damaged during the process. Besides, as the spindle of the wheel has to be maintained at a certain height, the diameter of the wheel is restricted and cannot be increased as desired. If the diameter of the wheel is prolonged, the wheel will certainly have the lower rim thereof touching the body. However as reading of signals may become more precise with the increase of the diameter of the wheel, it is imperative to find a solution to solve the above-mentioned problem.
Furthermore, the relative relationship among the wheels, light sources, and sensors will greatly affect the precision of signal reading. If these components are not properly mounted and positioned on the body of the cursor control device, signal reading will be defective or will even fail. But in the prior art, these components are individually welded to the circuit board directly so that it is necessary to adjust their position to ensure that they are properly positioned on the circuit board, which is very inconvenient and time-consumptive.
SUMMARY OF THE INVENTION
Accordingly, a primary object of the present invention is to provide a cursor control device 21fi72~5 construction wherein a wheel has a larger diameter and a spindle of the wheel may be arranged at a relatively higher position to permit precise reading of signals and to enable the wheel to be disposed above a circuit board and to be mounted on the circuit board before the circuit board is subjected to tin welding.
Another object of the present invention is to provide a cursor control device construction wherein the wheels, light sources and sensors may be conveniently and speedily mounted and positioned on the circuit board without the need for adjustment as in the prior art.
To achieve the above-mentioned objects, the cursor control device construction according to the invention essentially comprises a pair of encoders, each of which consists of a securing seat with a plurality of mountings for supporting a wheel and a couple positioning slots for securing a light source and a sensor, so that the wheel, light source and sensor may be mounted on the securing seat before the securing seat is mounted onto a circuit board by means of insert means which are inserted into corresponding holes in the circuit board. The securing seat further supports an idle wheel which is located intermediate a roller at one end of a spindle of the wheel and the ball for transmitting rolling actions of the ball to the roller so that the wheel may synchronously rotate with the 216725~
ball. The provision of the idle wheel enables the spindle of the wheel to be located at a relatively higher position so that the diameter of the wheel may be increased to achieve precise reading of signals and the wheel may be mounted on the circuit board prior to tin welding.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other features and advantages of the present invention will be more clearly understood from the following detailed description and the accompanying drawings, in which, Fig. l is a perspective view of the cursor control device construction according to the present invention in an assembled state;
Fig.lA is an enlarged view of part A of Figure 1;
Fig. 2 is a perspective exploded view of the present invention;
Fig. 2A is an enlarged view of part A of Figure 2;
Fig. 2B is an enlarged view of part B of Figure 2;
Fig. 3 is a top view of the encoders and a ball of the cursor control device construction according to the present invention, and Fig. 4 is a side view of the encoders and the ball of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Figs. l and 2, the cursor control 21672~
device construction according to the present invention essentially comprises a body lO, a cap 11 having a plurality of push buttons 12 for sealing the interior of the body 10, and a circuit board 13 accommodated within the body 10. The body 10 further has a circular hole 14 formed in a bottom side thereof for accommodating a ball 15, which may roll freely within the hole 14.
The body 10 is provided with a pair of encoders 16.
Each encoder 16 includes a wheel 17 having a spindle 18 extending in the direction of the ball 15, the spindle 18 having one end thereof fixedly provided with a roller 19. A securing seat 20 is disposed below the wheel 17 and has a plurality of plate-like mountings 24, 25, 26 respectively having slots 21, 22 and 23 for pivotally supporting the spindle 18, such that the wheel 17 may be disposed beside an inner side of the mounting 24 and the roller 19 may be.~disposed intermediate the mountings Z5 - - and 26. ~he mountings 25 and 26 are~ fur.ther .. .. = ~= . . . ~
respectively provided with individual notches 27, 28 in a vertical side thereof at a same elevation. An idle wheel 29 is disposed at a position lower than the spindle 19, with a spindle 30 at both ends thereof pivotally supported by the notches 27, 28. The idle wheel 29 is located between the roller 19 and the ball 15 and is in contact with both the roller 19 and the ball 15, so that the idle wheel 29 may transmit the 216-72~
rolling action of the ball 15 to the roller 19 (see Figs. 3 and 4).
A light source 31 (such as an LED) and a sensor 32 are individually disposed on both sides of the wheel 17.
The light source 31 and the sensor 32 are respectively inserted into positioning slots 33 and 34 of the securing seat 20. Two through holes 35 are formed in one side of the positioning slot 34 to allow light emitted from the light source 31 to reach the sensor 32 via the wheel 17. The positioning slots 33 and 34 have individual positioning plates 36 and 37 at an upper end thereof for positioning the light source 31 and the sensor 32 respectively. ~ - -The securing seat 20 has at least two hook-like : -lS lugs 38 and a positioning pin 39 projecting from a bottom side thereof. The wheel 17, light source 31 and sensor 32 are positioned properly on the securing seat ---.-20 before the securing seat 20 is mounted onto *he circuit board 13 by means of the lugs 38 and positioning~
pin 39 which are individually inserted into insert holes 40 and a positioning hole 41 correspondingly formed in the circuit board 13.
The light source 31 is disposed such that its light is just perpendicular to the wheel 17, and the sensor 32 is located near the periphery of the wheel 17 for receiving the light emitted by the light source 31 via _ . .
21~25~
the periphery of the wheel 17. When the wheel 17 rotates, some of the light emitted by the light source 31 will be blocked by the wheel 17 while some will pass via the periphery thereof to reach the sensor 32. These two conditions may be respectively represented by 0 and 1. Therefore, when the wheel 17 performs continuous rotation (whether clockwisely or counter-clockwisely), four signals may be obtained: (1, 1), (0, 1), (0, 0) and (1, 0). These signals are being converted via the circuit board 13 to control the movement of a cursor.
Since there are provided two encoders 16, they may respectively control the horizontal and vertical movements of the cursor, which may move in whatever direction across the screen.
The arrangement of the idle wheel 29 is to enable the spindle 18 of the wheel 17 to be disposed at a relatively higher position so that the diameter of the wheel 17 mav be increased to achieve precise reading of signals. In addition, the wheel 17 may be raised above the circuit board 13 so that it may be mounted on the circuit board 13 before the circuit board 13 undergoes tin soldering. Furthermore, the wheel 17, light source 3 and sensor 32 may be fitted on the securing seat first before the securing seat 32 is assembled to the circuit board 13, thus achieving easy assembly and eliminating the need for adjustment as in the prior art.
2167~3 Although the present invention has been illustrated and described with reference to the preferred embodiment thereof, it should be understood that it is in no way limited to the details of such embodiment but is capable-of numerous modifications within the scope of the appended claims.
.... . . .. ..
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A structure of cursor control device comprising:
a body having a cap with a plurality of push buttons locked to an upper side thereof, said body accommodating therein a circuit board and having a circular hole in a bottom side thereof for accommodating a ball, said body further having a pair of encoders, each of said encoders including a wheel with a spindle having one end thereof fixedly provided with a roller, a securing seat being disposed below said wheel, said securing seat having a plurality of plate-like mountings for supporting said spindle of said wheel, said mountings further supporting an idle wheel at a position lower than that of said roller, said idle wheel being disposed intermediate said roller and said ball and being in contact with both of said roller and said ball for transmitting rolling actions of said ball to said roller, a light source and a sensor being respectively disposed on both sides of said wheel and being secured in a couple of positioning slots formed in said securing seat, which has a plurality of hook-like lugs and a positioning pin projecting from a bottom side thereof, said lugs and said positioning pin being inserted into a plurality of insert holes and a positioning hole correspondingly formed in said circuit board after said wheel, said light source and said sensor are positioned on said securing seat.
a body having a cap with a plurality of push buttons locked to an upper side thereof, said body accommodating therein a circuit board and having a circular hole in a bottom side thereof for accommodating a ball, said body further having a pair of encoders, each of said encoders including a wheel with a spindle having one end thereof fixedly provided with a roller, a securing seat being disposed below said wheel, said securing seat having a plurality of plate-like mountings for supporting said spindle of said wheel, said mountings further supporting an idle wheel at a position lower than that of said roller, said idle wheel being disposed intermediate said roller and said ball and being in contact with both of said roller and said ball for transmitting rolling actions of said ball to said roller, a light source and a sensor being respectively disposed on both sides of said wheel and being secured in a couple of positioning slots formed in said securing seat, which has a plurality of hook-like lugs and a positioning pin projecting from a bottom side thereof, said lugs and said positioning pin being inserted into a plurality of insert holes and a positioning hole correspondingly formed in said circuit board after said wheel, said light source and said sensor are positioned on said securing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002167255A CA2167255A1 (en) | 1996-01-15 | 1996-01-15 | Structure of cursor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002167255A CA2167255A1 (en) | 1996-01-15 | 1996-01-15 | Structure of cursor control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2167255A1 true CA2167255A1 (en) | 1997-07-16 |
Family
ID=4157357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002167255A Abandoned CA2167255A1 (en) | 1996-01-15 | 1996-01-15 | Structure of cursor control device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2167255A1 (en) |
-
1996
- 1996-01-15 CA CA002167255A patent/CA2167255A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |