FASTENER-DRIVING TOOL INCLUDING A FASTENING RESULT DETECTOR

• US 20130319705A1
• Filed: 03/12/2013
• Published: 12/05/2013
• Est. Priority Date: 06/05/2012
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Moore, Stephen P., Birk, Daniel J.
• Granted Patent: US 9,381,635 B2
• Time in Patent Office: Days
• US Class Current: 173/20
• CPC Class Codes: B25C 1/00 Hand-held nailing tools hammers per se B25D; nailing machines B27F7/02; Nail feeding devices
• CPC Class Codes: B25C 1/04 operated by fluid pressure , e.g. by air pressure
• CPC Class Codes: B25C 1/047 Mechanical details
• CPC Class Codes: B25C 1/08 operated by combustion pressure
• CPC Class Codes: G01D 5/20 by varying inductance, e.g. by a movable armature

Abstract

A fastener driving tool including a housing, a cylinder enclosed by the housing, at least one sensor associated with the cylinder and a piston configured to reciprocate within the cylinder and having a driver blade depending therefrom. The tool includes at least one signal generator associated with the piston, where movement of the piston relative to the at least one sensor generates a signal. A controller is configured to receive the signal and indicate a fastening result based on the signal.

Claims

1. A fastener driving tool comprising:

a housing;

a cylinder enclosed by said housing;

at least one sensor associated with said cylinder;

a piston configured to reciprocate within said cylinder and having a driver blade depending therefrom; and

at least one signal generator associated with said piston, wherein movement of said piston relative to said at least one sensor generates a signal; and

a controller configured to receive said signal and indicate a fastening result based on said signal.

2. The tool of claim 1, further including at least one indicator selected from a group consisting of:

a visual indicator, an audio indicator, a tactile indicator and a marking indicator connected to said controller, wherein said controller activates said at least one indicator based on said fastening result.

3. The tool of claim 1, wherein said controller determines piston speed data based on an average speed of said piston at a beginning and at an end of said fastening result and compares said piston speed data to a desired range of piston speeds, wherein said controller indicates the fastening result being one of a “

hit”

when said piston speed data is in said desired range of piston speeds or a “

miss”

when said piston speed data is not in said desired range of piston speeds.

4. The tool of claim 1, wherein said fastening result is a “

hit”

when piston speed data is in a desired range of piston speeds or a “

miss”

when said piston speed data is not in said desired range of piston speeds.

5. The tool of claim 1, wherein said at least one signal generator includes a magnet and said at least one sensor includes an inductor.

6. The tool of claim 4, wherein said inductor includes at least one wire coil.

7. The tool of claim 1, wherein said at least one signal generator includes a plurality of magnets and said at least one sensor includes a plurality of inductors.

8. The tool of claim 6, wherein each of said plurality of inductors includes at least one wire coil.

9. A fastener driving tool comprising:

a housing;

a cylinder enclosed by said housing;

a plurality of sensors associated with said cylinder;

a piston configured to reciprocate within said cylinder and having a driver blade depending therefrom; and

at least one signal generator associated with said piston, wherein movement of said piston relative to each of said plurality of sensors generates a signal at each of said sensors;

a controller configured to communicate with each of said plurality of sensors and receive each of said signals, wherein said controller determines if a fastening result has occurred based on at least two of said signals; and

a selector movably connected to said housing and in communication with said controller, said selector being movable between a first position associated with a first set of fastening result parameters and a first amount of kinetic energy of said piston, and a second position associated with a second set of fastening result parameters and a second amount of kinetic energy of said piston, wherein said controller determines an amount of kinetic energy of said piston based on said at least two signals and indicates one of said first fastening result when said amount of kinetic energy is equal to said first amount of kinetic energy or said second fastening result when said amount of kinetic energy is equal to said second amount of kinetic energy.

10. The tool of claim 9, further including at least one indicator selected from a group consisting of:

a visual indicator, an audio indicator, a tactile indicator and a marking indicator connected to said controller, wherein said controller activates said at least one indicator based on one of said first fastening result and said second fastening result.

11. The tool of claim 9, wherein said first fastening result is a “

hit,”

which is a desired fastening result, and said second fastening result is a “

miss,”

which is not a desired fastening result.

12. The tool of claim 9, wherein said at least one signal generator includes a magnet and at least one of said plurality of sensors includes an inductor.

13. The tool of claim 12, wherein said inductor includes at least one wire coil.

14. The tool of claim 9, wherein said at least one signal generator includes a plurality of magnets and each of said plurality of sensors is an inductor.

15. The tool of claim 14, wherein each of said plurality of inductors includes at least one wire coil.