A sensor device for detecting displacement of a movable object, comprising: a member providing a detectable electrical characteristic that has a value; and a spring that, upon displacement of the movable object, is compressed and acts with the member providing the detectable electrical characteristic; wherein action between the spring and the member providing the detectable electrical characteristic causes the value of the electrical characteristic to change. view more

The sensor device as recited in claim 3, wherein the member providing the detectable electrical characteristic has the shape of a sheet.

The sensor device as recited in claim 3, wherein the value of the electrical characteristic represents an amount of displacement of the movable object and is input to a controller of a musical instrument that produces a sound signal dependent, at least in part, on the value of the electrical characteristic. view more

The sensor device as recited in claim 3, wherein the spring is a coil spring.

The sensor device as recited in claim 3, wherein an elastic member is disposed between the spring and the member providing the detectable electrical characteristic to convey a force from the spring to the member providing the detectable electrical characteristic. view more

The sensor device as recited in claim 3, wherein a member that distributes force of the action between the spring and the member providing the detectable electrical characteristic is disposed between the spring and the member providing the detectable electrical characteristic. view more

The sensor device as recited in claim 3, wherein: the spring has an axis, through which the spring is compressed upon the displacement of the movable object; and the member providing the detectable electrical characteristic has a hole that is concentric with the axis of the spring. view more

The sensor device as recited in claim 17, wherein the hole in the member providing the detectable electrical characteristic receives a shaft disposed through the axis of the spring.

The sensor device as recited in claim 3, wherein: the spring is a coil spring composed of a spring material having a length arranged in multiple loops; and upon compression of the spring, one or more of the multiple loops engage the member providing the detectable electrical characteristic such that the length of the spring material engaging the member providing the detectable electrical characteristic changes with an amount of compression of the spring. view more

A method of making a displacement detector, comprising: providing a member having a detectable electrical characteristic that has a value; disposing a spring opposite to the member having a detectable electrical characteristic; and disposing a movable object relative to the spring to compress the spring and cause the spring to act with the member having the detectable electrical characteristic upon displacement of the movable object, wherein action between the spring and the member having the detectable electrical characteristic causes the value of the electrical characteristic to change. view more

The method as recited in claim 20, wherein the spring is a coil spring.

An electronic pad receiving a strike, detecting the strike and outputting a signal representative of the strike comprising: a frame having a striking surface with a peripheral edge portion; a cover covering the striking surface of the frame; a striking sensor provided on a part of, but not the entire peripheral edge portion of the frame, the striking sensor for detecting the strike transmitted to the frame through the cover; and a jack affixed to the frame and electrically coupled to the striking sensor for outputting signals from the striking sensor, the jack having an opening of a receiving space for receiving an electrical plug, the opening of the receiving space facing in a direction away from the part of the peripheral edge portion of the frame having the striking sensor. view more

The electronic pad according to claim 28, wherein the striking sensor is provided on an upper surface of the peripheral edge portion of the frame.

An electronic pad for mounting on a stand, receiving a strike, detecting the strike and outputting a signal representative of the strike, the electronic pad comprising: a frame having an upper surface with an outer peripheral edge; a cover over the upper surface of the frame and defining a striking surface for receiving a strike; a striking sensor supported on the frame for providing an electronic signal corresponding to a strike on the striking surface a support structure to pivotally support the frame on a stand for pivotal motion of the frame relative to the stand; and a rotation stopper operatively coupled to the frame, for inhibiting rotation of the frame relative to the stand, when the frame is mounted on the stand for pivotal motion. view more

An electronic pad according to claim 30, wherein the rotation stopper comprises a first member on the frame and a second member for fixing to a stand, the first member being pivotal relative to the second member.

An electronic pad according to claim 31, wherein the first and second members are arranged to abut each other and are shaped to inhibit rotation relative to each other.

An electronic pad according to claim 30, wherein the frame has a peripheral edge and wherein the striking sensor is disposed about a portion of, but less than the entire peripheral edge of the frame.

An electronic pad according to claim 30, wherein the frame has a generally circular outer peripheral edge and wherein the striking sensor is disposed on the frame, adjacent to the generally circular outer peripheral edge of the frame and wherein the striking sensor extends around less than the entire circumference of the generally circular outer peripheral edge of the frame. view more

A head for a percussion instrument, the head comprising a frame and a net-like material comprising multiple net members, each net member supported by said frame, said net-like material having openings through which air may pass.

A head for a percussion instrument as recited in claim 19, wherein the multiple net members comprise first and second net members arranged generally flat against each other.

A head as recited in claim 19, wherein each net member comprising a plurality of longitudinally arranged fiber sections and a plurality of transversely arranged fiber sections interwoven with the longitudinally arranged fiber sections.

A percussion instrument, comprising:</claim-text> a generally hollow body having an opening into a body interior; a generally flexible, net-like material tensioned state across the opening of the generally hollow body, the net-like material defining cussion surface for receiving a percussion impact, the net-like material also having openings of a size sufficient to allow air to pass therethrough, upon receiving a percussion impact on the percussion surface; and a sensor supported by said generally hollow body, for providing an electronic signal in response to a percussion impact on the percussion surface of the generally flexible, net-like material. view more

An electronic pad receiving a strike, detecting the strike and outputting a signal representative of the strike comprising:</claim-text> a first frame; a striking sensor detecting the strike transmitted to said first frame; and a second frame rting said first frame from below, having an attachment hole with a pivotal joint; and a rotation stopper member coupled to the second frame for preventing said first frame from circumferentially rotating about a pole of a stand, said pole being inserted into said attachment hole, said attachment hole located in said rotation stopper member, said pivotal joint being rockably fitted into said rotation stopper member with resulting play. view more

The electronic pad according to claim 1, wherein the second frame is made of a softer material than a material for said first frame.

The electronic pad according to claim 1, wherein said first frame has a larger opening portion than said attachment hole of said second frame, the opening portion provided on a central portion of the first frame; and</claim-text> said second frame des a head portion having said attachment hole and inserted into said opening portion from below in an upward direction, and a shoulder portion supporting a surrounding portion of said opening portion of said first frame from below, the surrounding portion surrounding the head portion. view more

A head for an electronic percussion instrument, the head comprising a frame and a net-like material comprising first and second net members, each supported by said frame, said net-like material having openings through which air may pass.

A head as recited in claim <HIL><BOLD>1</BOLD></HIL>, wherein each net member comprising a plurality of longitudinally arranged fiber sections and a plurality of transversely arranged fiber sections interwoven with the longitudinally arranged fiber view more

A head as recited in claim <HIL><BOLD>2</BOLD></HIL>, wherein, within each of said first and second net members, said longitudinally arranged fiber sections and said transversely arranged fiber sections are arranged substantially perpendicular to view more

An electronic percussion instrument, comprising:</claim-text> a generally hollow body having an opening into a body interior; a generally flexible, net-like material disposed in a tensioned state across the opening of the generally hollow body, the ike material defining a percussion surface for receiving a percussion impact, the net-like material also having openings of a size sufficient to allow air to pass therethrough, upon receiving a percussion impact on the percussion surface; and a sensor supported by said generally hollow body, for providing an electronic signal in response to a percussion impact on the percussion surface of the generally flexible, net-like material. view more

An electronic percussion instrument as recited in claim <HIL><BOLD>6</BOLD></HIL>, wherein said net-like material comprises first and second net members, each net member comprising a plurality of longitudinally arranged fiber sections and a plurality d fiber sections interweaved with the longitudinally arranged fiber sections. view more

An electronic percussion instrument as recited in claim <HIL><BOLD>7</BOLD></HIL>, wherein, within each of said first and second net members, said longitudinally arranged fiber sections and said transversely arranged fiber sections are arranged ular to each other. view more

A head for connection with a body of an electronic percussion instrument of the type having a generally hollow body interior and an opening in airflow communication with the body interior, said head comprising:</claim-text> a frame having a size and corresponding to the opening in the body and adapted to be supported on the body, adjacent the opening; a generally flexible, net-like material supported in a generally tensioned state by the frame and having a size and shape suitable for covering at least a portion of said opening, upon the frame being supported on the body, adjacent the opening, the net-like material defining a percussion surface for receiving a percussion impact when the frame is supported on the body, the net-like material first and second net members, each having openings of a size sufficient to allow air to pass therethrough, upon receiving a percussion impact on the percussion surface. view more