US 2003/0192933 A1 · Modified electrical motor driven nail gun

Abstract

A portable electric nailing gun operating from a power source. The motor accelerates a flywheel which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The motor accelerates a flywheel that is then clutched to the output anvil causing the nail to be driven. The position of the output anvil is sensed and once the nail is driven, the motor is dynamically braked reducing the excess energy in the flywheel. This method uses a highly responsive motor and power source which enables the motor to come up to speed, drive the nail and return to a low energy condition in less than 2 seconds. The electrical control circuit and brake allow precise control and improve safety. The power source is preferably a rechargeable low impedance battery.

Drawings

Drawings are temporarily unavailable. Open the PDF at USPTO

Drawings

Claims25

Dependent claims

An apparatus for driving a fastener into a material comprising:

a power source;
a motor;
means for coupling said power source to said motor for the purpose of directing power from the power source to the motor;
a kinetic energy storing mechanism;
means for coupling said motor to said kinetic energy storing mechanism to allow the motor to supply and transfer energy to said kinetic energy storing mechanism;
a clutching mechanism;
means for engaging said clutching mechanism with said kinetic energy storing mechanism;
a fastener driving device comprising a slider crank mechanism coupled to said clutching mechanism;
means for transferring energy from said kinetic energy storing mechanism to said fastener driving device;
a fastener;
means for bringing the fastener driving device into contact with said fastener to drive said fastener into a substrate material;
and
means for returning and biasing fastener driving device at top dead center.

10 more elements

Dependencies are inferred from the claim text.

Description4,216 words

Summary1,955 words

#Not Applicable

#This application is a continuation of utility application Ser. No. 10/091,410 and all parts of the parent application are incorporated herein by this specific reference.

Brief description of the drawings6 figures

#In the drawings, closely related figures have the same number but different alphabetic suffixes.

#FIGS. 1a and 1b show various aspects of the nail fastening system in which the motor is coupled to a flywheel. The flywheel is coupled to the nail driving system;

#FIG. 2 is an overview of the fastener-driving tool embodying the invention;

Detailed description2,151 words

#Reference Numbers in Drawings:

#1 Power Source

#2 Motor

Family

Application60/313,618Us provisional application · filed 20 Aug 2001

Application10/091,410Continuation · filed 7 Mar 2002

Application10/426,149Continuation · filed 29 Apr 2003

US 6,604,666 B1Related patent

US 6,766,935 B2Related patent

US 2003/0192933 A1This patent

From the US filing history. Foreign family members aren’t listed.

Modified electrical motor driven nail gun

Life of this patent

Modified electrical motor driven nail gun

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims25

Description4,216 words

Drawings

Classification2 codes

Life of this patent

Description4,216 words