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US 2003/0116601 A1Published application
Impact enhancing device of an electric nailer
AssigneesChao-Cheng Lu, Hung-Fei Chen
InventorChao-Cheng Lu
Life of this patent
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Abstract
An impact enhancing device of an electric nailer, comprising: an AC power source, a protection circuit, a first switch, a full-wave rectifier, a timing controller circuit, an energy-storage circuit, a solid-state switch circuit, an electromagnetic coil device, a DC power source, a second switch, a reset enable single shot trigger circuit, and a relay. Thus, the electric nailer provides a larger impact force with a smaller volume and a lighter weight.
Claims13
An impact enhancing device of an electric nailer, comprising:
- an AC power source, a protection circuit, a first switch, a full-wave rectifier/full-wave doubler, a timing controller circuit, an energy-storage circuit, a solid-state switch circuit, an electromagnetic coil device, a DC power source, a second switch, a reset enable single shot trigger circuit, and a relay.
A circuit device for inverting a DC power source into an AC power source, comprising:
- a photo coupler module circuit including a light emitting diode containing a first port connected to a first port of a current limited resistor and a second port connected to the grounding port of the reset enable single shot trigger circuit, the current limited resistor contains a second port connected to an pulse output terminal of a timing controller module circuit, wherein the photo coupler module circuit transfers an pulse signal;
- and
- a relay circuit including an electromagnetic coil, a normally closed connector, a transistor, and a base resistor, wherein the electromagnetic coil contains a first port connected to the positive terminal of a DC power supply and a second port connected to the collector of the transistor, the emitter of the transistor is grounding, the base of the transistor is connected to the base resistor and to a first port of the output port of the photo coupler module circuit, the output port of the photo coupler module circuit contains a second port connected to the first port of the current limited resistor, the normally closed connector contains a first port connected to a first port of a first switch of the DC power supply and a second port connected to the positive supply terminal of an oscillation circuit, the first switch of the DC power supply contains a second port connected to the positive terminal of the DC power supply, so that when the output port of the photo coupler module circuit is conducted, the oscillation circuit stops operation, and when the output port of the photo coupler module circuit is shutoff, the oscillation circuit starts operating.
Dependencies are inferred from the claim text.