IP Library Granted Patent US 7,832,610
Granted Patent B2
US 7,832,610 · App. 12/055,366 · Granted Nov 16, 2010

Fastener driving tool having impact buffering mechanism

Assignee: Hitachi Koki Co., Ltd.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,832,610
App. No.
12/055,366
Granted
Nov 16, 2010
Kind
B2
Abstract

A fastener driving tool includes a housing, a motor, a plunger, a spring, a power transmission mechanism, and an impact buffering portion. The motor is provided in the housing. The plunger is provided in the housing and impacts a fastener in one direction. The spring urges the plunger in the one direction. The power transmission mechanism connects the motor and the plunger for moving the plunger in another direction opposite to the one direction against an urging force of the spring. The impact buffering portion is provided in one of the power transmission mechanism and the plunger.

Claims (10)

1. A fastener driving tool comprising:

a housing;

a motor provided in the housing and having an output shaft;

a plunger provided in the housing and impacting a fastener in one direction;

a spring urging the plunger in the one direction;

a power transmitting member connected with the plunger;

a clutch mechanism having a movable member fixed to the output shaft of the motor and movable between a transmission position where a driving force of the motor is transmitted to the power transmitting member to move the plunger in another direction opposite to the one direction against an urging force of the spring and a shut-off position where transmission of the driving force of the motor to the power transmitting member is shut-off; and

an impact buffering portion disposed between the clutch mechanism and the plunger.

2. The fastener driving tool according to claim

wherein the power transmitting member comprises a cable movably connected to the plunger.

Assignments (3)
CHANGE OF NAME Recorded Jul 26, 2018
From: HITACHI KOKI KABUSHIKI KAISHA
To: KOKI HOLDINGS CO., LTD.
Reel/Frame 047270/0107 →
CORRECTED ASSIGNMENT TO CORRECT THE 4TH INVENTOR WAS OMITTED ON BOTH ELECTRONIC COVER SHEET AND NOTICE OF RECORDATION REEL 020701/FRAME 0048. Recorded May 8, 2008
From: TANIMOTO, HIDEYUKI; SAKABA, TOSHIHITO; ODA, HIROYUKI; NAKANO, YOSHIHIRO
To: HITACHI KOKI CO., LTD.
Reel/Frame 020955/0504 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 26, 2008
From: TANIMOTO, HIDEYUKI; SAKABA, TOSHIHITO; ODA, HIROYUKI
To: HITACHI KOKI CO., LTD.
Reel/Frame 020701/0048 →
Priority Claims (1)
JP P2007-078980 · Mar 26, 2007 · national
Continuity (1)
Related Publication 20080237294A1 · Oct 2, 2008