Power tools

• US 7,540,334 B2
• Filed: 02/11/2008
• Issued: 06/02/2009
• Est. Priority Date: 04/29/1999
• Status: Expired due to Fees

• Current Assignee: David S. D'Ascenzo, Stephen F Gass
• Original Assignee: David S. D'Ascenzo, Stephen F Gass
• Inventors: D'Ascenzo, David S., Gass, Stephen F.
• Primary Examiner(s): Smith; Scott A.
• Application Number:
  US12/069,556
• Publication Number:
  US 20080196912A1
• Time in Patent Office: 477 Days
• Field of Search: 173/2, 173/217, 173/20, 173/21, 173/176, 173/171, 379/62, 379/902, 379/150, 318/281, 318/282, 318/293
• US Class Current: 173/2
• CPC Class Codes: B23B 2260/128 Sensors
• CPC Class Codes: B23B 31/123 with locking arrangements locking arrangements for chucks with simultaneously-acting jaws moving radially actuated by one or more spiral grooves B23B31/16041
• CPC Class Codes: B23B 45/008 Gear boxes, clutches, bearings, feeding mechanisms or like equipment
• CPC Class Codes: B23B 49/008 Attached to the nose of the drilling machines
• CPC Class Codes: B23G 1/18 Machines with one working spindle
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/0064 Means for adjusting screwing depth
• CPC Class Codes: B25B 23/147 specially adapted for electrically operated wrenches or screwdrivers
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: B25F 5/001 Gearings, speed selectors, clutches or the like specially adapted for rotary tools
• CPC Class Codes: B25F 5/003 Stops for limiting depth in rotary hand tools for drilling tools: B23B49/003
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: B25F 5/021 with guiding devices guiding devices for hand tools on stands or supports B25H1/0078
• CPC Class Codes: B25H 1/0092 by optical means

Abstract

An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed.

Claims

1. An electrically powered hand drill/driver, comprising:

a rotatable work element adapted to receive a bit;

a motor adapted to drive the rotation of the work element during powered operation of the drill/driver;

a body having a housing containing at least the motor and a handle adapted to be gripped by a user while operating the drill/driver;

a power source adapted to deliver power to the motor;

at least one user input;

wherein the at least one user input includes an actuator adapted to be depressed by a user to select powered operation of the drill/driver;

at least one distance sensor adapted to measure a distance from the distance sensor to a workpiece; and

a controller electrically connected to the at least one distance sensor, wherein responsive to the distance, the controller is adapted to at least one of control the delivery of power to the motor from the power source and actuate a feedback mechanism.

2. An electrically powered hand tool, comprising:

a housing;

a work element extending from the housing and adapted to receive a bit;

a motor adapted to drive rotation of the work element during powered operation of the tool;

a power source adapted to deliver power to the motor;

a distance sensor adapted to emit and detect a distance-measuring signal;

a user interface adapted to receive a user-selected value corresponding to a desired setting; and

a controller adapted to receive a signal from the distance sensor and determine therefrom a measured distance from a reference position on the tool to a workpiece, wherein the controller is further adapted to determine when the desired setting is achieved by comparing the measured distance to the user-selected value.

3. The electrically powered hand tool of claim 2, wherein the desired setting is a desired distance between a reference position associated with the tool and the workpiece.

4. The electrically powered hand tool of claim 3, wherein the desired distance corresponds to one of a distance to which the bit is inserted into the workpiece and a distance a screw rotated by the bit is inserted into the workpiece.

5. The electrically powered hand tool of claim 3, wherein the desired distance corresponds to a relative distance measured from a reference distance between the distance sensor and the workpiece before powered operation of the hand tool is initiated.

6. The electrically powered hand tool of claim 5, wherein the controller is further adapted to determine a change in the relative distance, and further wherein the desired distance is achieved when the change in the relative distance is equal to the desired distance.

7. The electrically powered hand tool of claim 3, wherein the controller is further adapted to interrupt delivery of power to the motor when the desired distance is achieved.

8. The electrically powered hand tool of claim 3, wherein the controller is further adapted to at least one of apply a reverse torque to the work element when the desired distance is achieved and electrically brake the work element when the desired distance is achieved.

9. The electrically powered hand tool of claim 3, wherein the controller is further adapted to actuate a feedback mechanism after commencement of a powered operation of the tool and prior to the desired distance being achieved.

10. The electrically powered hand tool of claim 9, wherein the feedback mechanism includes at least one of an audible signal, a visual signal, and reducing the delivery of power to the motor.

11. The electrically powered hand tool of claim 3, further comprising a plurality of distance sensors, each distance sensor adapted to emit and detect a distance-measuring signal;

wherein the controller is adapted to receive a signal from each of the distance sensors and determine from the signals a measured distance from a reference position on the tool to the workpiece.

12. The electrically powered hand tool of claim 2, wherein the desired setting is a desired angular orientation of the tool relative to the workpiece;

wherein the tool further comprises a plurality of distance sensors, each distance sensor adapted to emit and detect a distance-measuring signal; and

further wherein the controller is adapted to receive a signal from each of the distance sensors and determine from the signals an actual angular orientation of the tool with respect to the workpiece.

13. The electrically powered hand tool of claim 12, wherein the controller is adapted to determined the actual angular orientation of the tool with respect to the workpiece regardless of the angular orientation of the tool relative to a ground surface, a true vertical position, and a true horizontal position.

14. The electrically powered hand tool of claim 12, wherein the controller is further adapted to prevent powered operation of the tool when the actual angular orientation does not equal the desired angular orientation and to permit powered operation of the tool when the actual angular orientation is equal to the desired angular orientation.

15. The electrically powered hand tool of claim 12, wherein the controller is further adapted to determine if the actual angular orientation is within a predetermined tolerance of the desired angular orientation.

16. The electrically powered hand tool of claim 15, wherein the controller is further adapted to prevent powered operation of the tool when the actual angular orientation is not within the predetermined tolerance of the desired angular orientation and to permit powered operation of the tool when the actual angular orientation is within the predetermined tolerance of the desired angular orientation.

17. The electrically powered hand tool of claim 12, wherein the controller is further adapted to actuate a feedback mechanism to guide a user to position the tool in the desired angular orientation.

18. The electrically powered hand tool of claim 17, wherein the controller is adapted to actuate the feedback mechanism when the actual angular orientation equals the desired angular orientation.

19. An electrically powered hand tool, comprising:

a housing;

a work element extending from the housing and adapted to receive a bit;

a motor adapted to drive rotation of the work element during powered operation of the tool;

a power source adapted to deliver power to the motor;

a plurality of distance sensors, each distance sensor adapted to emit and detect a distance-measuring signal; and

a controller adapted to receive a signal from the plurality of distance sensors and determine therefrom an angular orientation of the tool with respect to the workpiece; and

further wherein the controller is adapted to at least one of (1) restrict powered operation of the tool when the angular orientation is not within a predetermined tolerance of a predetermined angular orientation, (2) indicate the angular orientation to a user via a display on a user interface; and

(3) indicate to the user via a visual or audio feedback mechanism when the angular orientation is within a predetermined tolerance of the predetermined angular orientation.

20. The electrically powered hand tool of claim 19, further comprising a user interface adapted to receive a user input selecting at least one of the predetermined angular orientation and the predetermined tolerance.