Pressure sensitive stylus pen
First Claim
1. A pressure sensitive stylus for sensing a depressing force by using a change in inductance generated by an interval displacement due to the depressing force between a first magnetic body and a second magnetic body having a coil wound thereabout, the stylus comprising:
- a depressing member having a contact portion for receiving the depressing force and a rear end portion located substantially opposite to said contact portion, at least said rear end portion of said depressing member forming a first magnetic body,a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from the rear end plane of said depressing member,an elastic material member disposed between said rear end plane of said depressing member and said front end plane of said second magnetic body,first supporting means for holding the position of said second magnetic body against the depressing force which is transferred through said depressing member and said elastic member, andsecond supporting means for holding the position of said depressing member when the rear end plane of said depressing member and the front end plane of said second magnetic body are placed by the depressing force in a position other than parallel.
1 Assignment
0 Petitions
Accused Products
Abstract
A stylus which has a pressure sensitive arrangement for reliably sensing a depressing force although the stylus being slantingly disposed, by using inductance change generated from an interval displacement between a moveable magnetic body and a fixed magnetic body, which has a coil wounded around thereof and is disposed at a predetermined distance from said moveable magnetic body. The arrangement has a pen tip member having a contact portion for receiving the pen pressure; an elastic material member disposed between the moveable and fixed magnetic bodies; a first supporting device disposed to hold the position of the fixed magnetic body against a depressing pressure; and a second supporting device for supporting the depressing member in a condition established when the rear end plane of the moveable magnetic body and the front end plane of the fixed magnetic body are placed with each other in a parellel position by receiving the depressing pressure.
145 Citations
24 Claims
-
1. A pressure sensitive stylus for sensing a depressing force by using a change in inductance generated by an interval displacement due to the depressing force between a first magnetic body and a second magnetic body having a coil wound thereabout, the stylus comprising:
-
a depressing member having a contact portion for receiving the depressing force and a rear end portion located substantially opposite to said contact portion, at least said rear end portion of said depressing member forming a first magnetic body, a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from the rear end plane of said depressing member, an elastic material member disposed between said rear end plane of said depressing member and said front end plane of said second magnetic body, first supporting means for holding the position of said second magnetic body against the depressing force which is transferred through said depressing member and said elastic member, and second supporting means for holding the position of said depressing member when the rear end plane of said depressing member and the front end plane of said second magnetic body are placed by the depressing force in a position other than parallel. - View Dependent Claims (2, 3)
-
-
4. A pressure sensitive stylus for sensing the depressing force by using a change in the inductance generated by an interval displacement between a first magnetic body and a second magnetic body having a coil wound thereabout in a stylus that comprises a cylindrical pen casing and an electrical resonant circuit, said stylus comprising:
-
a depressing member having a contact portion for receiving pressure applied to said stylus and a rear end portion located substantially opposite said contact portion, said rear end portion forming a first magnetic body, a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from a rear end plane of said rear end portion forming said first magnetic body, an elastic material member disposed between said rear end portion formed by said first magnetic body and the front end plane of said second magnetic body, first supporting means for holding the position of said second magnetic body against the pressure applied to said stylus from said depressing member and said elastic member, and second supporting means for supporting said depressing member in a condition established when said rear end portion forming said first magnetic body and the end plane of said second magnetic body are placed by the pressure in a position other than parallel. - View Dependent Claims (5, 6)
-
-
7. A stylus comprising a cylindrical pen casing and an electrical resonant circuit, and having a pressure sensitive structure for sensing the depressing force by using a change in the inductance generated by an interval displacement between a first magnetic body and a second magnetic body having a coil wound thereabout, wherein said stylus comprises:
-
a depressing member having a contact portion for receiving the pressure applied to said stylus and a rear end portion located on the substantially opposite side of said contact portion, said rear end portion forming a first magnetic body, a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from a rear end plane of said rear end portion forming said first magnetic body, an elastic material member disposed between said rear end portion forming said first magnetic body and the front end plane of said second magnetic body, first supporting means disposed for holding the position of said second magnetic body against the pressure which is transferred from said depressing member and said elastic member, and second supporting means for supporting said depressing member in a condition established when the rear end plane of said rear end portion forming said first magnetic body and the front end plane of said second magnetic body are placed in a position other than parallel by receiving the pen pressure. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A stylus comprising a cylindrical pen casing and an electrical resonant circuit, and having a pressure sensitive structure for sensing the depressing force by using a change in the inductance generated by an interval displacement between a first magnetic body and a second magnetic body having a coil wound thereabout, wherein said stylus comprises:
-
a pen tip member having a contact portion for receiving the pressure applied to said stylus and a rear end plane located on the substantially opposite side of said contact portion, a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from a rear end plane of said pen tip member, an elastic material member into which magnetic material is dispersed to form a first magnetic body, said elastic material member disposed between said rear end plane of said pen tip member and said front end plane of said second magnetic body, first supporting means for holding the position of said second magnetic body against the pressure that is transferred from said pen tip member and said elastic member, and second supporting means for supporting said pen tip member in a condition established when said rear end plane of said pen tip member and said front end plane of said second magnetic body are placed in a position other than parallel by receiving the pen pressure. - View Dependent Claims (22)
-
-
23. A stylus comprising a cylindrical pen casing and an electrical resonant circuit, and having a pressure sensitive structure for sensing the depressing force by using a change in the inductance generated by an interval displacement between a first magnetic body and a second magnetic body having a coil wound thereabout, wherein said stylus comprises:
-
a pen tip member having a contact portion for receiving the pressure applied to said stylus and a rear end plane located substantially opposite to said contact member, a second magnetic body having a coil wound thereabout which is disposed so that its front end plane is located a predetermined distance from a rear end plane of said pen tip member, a plurality of magnetic discs, each of which is connected by an elastic adhesive to form a first magnetic body, disposed between said rear end plane of said pen tip member and said front end plane of said second magnetic body, first supporting means for holding the position of said second magnetic body against the pressure that is transferred from said pen tip member and said plurality of said magnetic discs, and second supporting means for supporting said pen tip member in a condition established when said rear plane of said pen tip member and said front end plane of said second magnetic body are placed in a position other than parallel by receiving the pressure.
-
-
24. A stylus comprising a cylindrical pen casing and an electrical resonant circuit, and having a pressure sensitive structure for sensing the depressing force by using a change in the inductance of a coil wound around a magnetic body, wherein said stylus comprises:
-
a pen tip member having a contact portion for receiving pressure applied to said stylus and a rear end plane located substantially opposite to said contact member, a plurality of magnetic cylinders having a coil wound thereabout, said cylinders disposed to contact the rear end plane of said pen tip member, and connected by elastic adhesive to each other, first supporting means for holding the position of the cylinder disposed at the rear end of said cylinders against the pen pressure transferred from said pen tip member and said plurality of said magnetic cylinders, and second supporting means for supporting said pen tip member in a condition established when said rear plane of said pen tip member and said end planes of said cylinders are placed in a position other than parallel by receiving the pressure.
-
Specification