Automatically adjustable comb for a firearm

• US 8,863,427 B2
• Filed: 11/21/2012
• Issued: 10/21/2014
• Est. Priority Date: 11/21/2012
• Status: Expired due to Fees

• Current Assignee: Grip Plus, Inc.
• Original Assignee: Grip Plus, Inc.
• Inventors: Chiang, Sai Ming
• Primary Examiner(s): KLEIN, GABRIEL J
• Application Number:
  US13/683,335
• Publication Number:
  US 20140137456A1
• Time in Patent Office: 699 Days
• Field of Search: 42/10.6, 42/710.1, 42/710.2, 42/72, 42/73, 42/74, 42/90
• US Class Current: 42/73
• CPC Class Codes: F41C 23/14 Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop

Abstract

An automatically adjustable comb for a firearm that extends a predetermined distance from an initial position, flush with the top of a stock, when the firearm moves to a predetermined angular orientation. The automatic adjustable comb may include a detector that detects when the firearm and/or comb has moved to a predetermined angular orientation with respect to a horizontal orientation. The detector may actuate an actuator to extend the comb the predetermined distance from the initial position. The extension of the comb elevates the top of the comb with respect to the top of the stock. The user may be able to vary both the predetermined angular orientation and the predetermined distance. The detection device may detect when the firearm is lowered to a horizontal orientation from an elevated angular orientation causing the actuator to lower the comb so that it is flush with the stock of the firearm.

Claims

1. An accessory for a firearm, the accessory comprising:

a comb configured to be attached to a portion of a firearm, the comb configured to be extended a predetermined distance from an initial position while attached to the portion of the firearm;

the comb configured to automatically extend the predetermined distance from the initial position when the comb moves from a first angular orientation to a second angular orientation;

a detector configured to detect an angular orientation of the comb; and

an actuator connected to the comb and being in communication with the detector,

wherein upon detection of movement of the comb to the second angular orientation by the detector the actuator is actuated extending the comb the predetermined distance.

2. The accessory of claim 1, wherein the first angular orientation is a horizontal angular orientation and the second angular orientation is at least fifteen degrees inclined above the horizontal orientation.

3. The accessory of claim 1, wherein the detector is a tilt switch, a motion sensor, or a computer connected to a control sensor.

4. The accessory of claim 1, wherein the detector is configured to detect when the comb is at the second angular orientation, the second orientation being a predetermined inclination above the first angular orientation.

5. The accessory of claim 4, wherein the predetermined inclination is at least fifteen degrees.

6. The accessory of claim 4, wherein the predetermined inclination is adjustable.

7. The accessory of claim 1, wherein the predetermined distance is 0.375 inches.

8. The accessory of claim 1, wherein the predetermined distance is adjustable.

9. The accessory of claim 1, wherein the actuator comprises one of the following systems:

an earth magnet, an electromagnet, and a power source, wherein detection of the second angular orientation connects the power source to the electromagnet causing a repulsion between the earth magnet and the electromagnet to extend the comb the predetermined distance;

a pneumatic air cylinder and an air supply, wherein detection of the second angular orientation connects the air source to the pneumatic air cylinder to extend the comb the predetermined distance;

an electric motor and a power source, wherein detection of the second angular orientation connects the power source to the electric motor to actuate the motor to extend the comb to the predetermined distance;

a piezoeletric transducer and a power source, wherein detection of the second angular orientation connects the powers source to the piezoelectric transducer to extend the comb the predetermined distance; and

a biased spring and a latch, wherein detection of the second angular orientation actuates the latch to release the biased spring to extend the comb the predetermined distance.

10. The accessory of claim 1, wherein the detector is configured to detect that the angular orientation of the comb has moved from the second angular orientation to the first angular orientation and the actuator is configured to retract the comb the predetermined distance based on the detector detecting that the angular orientation of the comb has moved from the second angular orientation to the first angular orientation.