Arrow with light emitting function, nock with light emitting function, and light emission control device to be used in arrow technical field

• US 7,316,625 B2
• Filed: 05/21/2004
• Issued: 01/08/2008
• Est. Priority Date: 05/21/2004
• Status: Expired due to Fees

• Current Assignee: Yasuhiro Takahashi
• Original Assignee: Yasuhiro Takahashi
• Inventors: Takahashi, Yasuhiro
• Primary Examiner(s): Ricci; John A.
• Application Number:
  US10/544,554
• Publication Number:
  US 20070105667A1
• Time in Patent Office: 1,327 Days
• Field of Search: 473/570, 473/578
• US Class Current: 473/578
• CPC Class Codes: A63B 2225/74 with powered illuminating means, e.g. lights
• CPC Class Codes: A63B 65/00 Implements for throwing throwing toys A63H33/18 ; Mechanical projectors, e.g. using spring force
• CPC Class Codes: F42B 12/382 emitting an electromagnetic radiation, e.g. laser beam or infrared emission

Abstract

An arrow is provided with a light emitting function, a nock with a light emitting function, and a light emission control device to be used in an arrow which thereby realize accurate and stable light emission periods of time and a reduction in size and weight of light emitting members by using an electronic circuit with an acceleration sensor switch in its light emission control part. The control device includes an acceleration switch, a capacitor circuit including a capacitor and a resistor, and an electrical circuit installed inside the arrow, nock, or attachable to and detachable from the arrow. Electricity is applied when the arrow is discharged from a bow to emit light for a set period of time.

Claims

1. An arrow with a light emitting function having a light emission control part comprising:

a light emission control part that emits light when the arrow is discharged, said control part including an electrical circuit;

said control part including an acceleration sensor switch that starts by an acceleration of the arrow;

a light source provided at a position enabling a shooter to make a visually check;

a battery that supplies a current to the light source when the acceleration sensor switch starts; and

a capacitor circuit to which a current is supplied for a predetermined period of time after the acceleration sensor switch is turned off.

2. The arrow with a light emitting function according to claim 1, wherein the light source is provided in a nock of the arrow.

3. The arrow of claim 1, wherein the acceleration sensor switch closes during acceleration of the arrow and opens when the arrow is not accelerating.

4. The arrow of claim 1, wherein the acceleration sensor switch is comprised of two metal plates, one or both of said metal plates bending toward the other metal plate and closing the acceleration sensor switch when an inertial force acts on the metal plates due to acceleration of the arrow.

5. A nock with a light emitting function provided in an arrow having a light emission control part comprising:

a light emission control part that emits light when the arrow is discharged, said control part including an electrical circuit

said control unit including an acceleration sensor switch that starts by an acceleration of the arrow;

a light source provided in the nock;

a battery that supplies a current to the light source when the acceleration sensor switch starts; and

a capacitor circuit to which a current is supplied for a predetermined period of time after the acceleration sensor switch is turned off.

6. The nock with a light emitting function according to claim 5, wherein

the nock with the light emission control part is attachable to and detachable from an arrow main body.

7. The nock of claim 5, wherein the acceleration sensor switch closes during acceleration of the arrow and opens when the arrow is not accelerating.

8. The nock of claim 5, wherein the acceleration sensor switch is comprised of two metal plates, one or both of said metal plates bending toward the other metal plate and closing the acceleration sensor switch when an inertial force acts on the metal plates due to acceleration of the arrow.

9. A light emission control device with a light emitting function to be attached to an arrow comprising:

an electrical circuit which includes;

an acceleration sensor switch that starts by an acceleration of the arrow;

a light source that emits light when the arrow is discharged;

a battery that supplies a current to the light source when the acceleration sensor switch starts; and

a capacitor circuit to which a current is supplied for a predetermined period of time after the acceleration sensor switch turned off.

10. The light emission control device with a light emitting function according to claim 9, wherein the light emission control device is attachable to and detachable from an arrow main body.

11. The light emission control device of claim 9, wherein the acceleration sensor switch closes during acceleration of the arrow and opens when the arrow is not accelerating.

12. The light emission control device of claim 9, wherein the acceleration sensor switch is comprised of two metal plates, one or both of said metal plates bending toward the other metal plate and closing the acceleration sensor switch when an inertial force acts on the metal plates due to acceleration of the arrow.