Impact screwdriver having a shaft locking device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8191649
APP PUB NO 20100126745A1
SERIAL NO

12592361

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention provides both an impact switching function and a shaft locking function for use in an impact screwdriver. The impact screwdriver includes a housing, a motor located in the housing, a motor drive shaft driven by the motor, a hammer which can move axially and rotate around the motor drive shaft, a hammer anvil, an impact switching device and a shaft locking apparatus. The shaft locking apparatus has a mating member coupled with the hammer anvil, an engagement ring fixed to the housing and a middle member located between the mating member and the engagement ring. The shaft locking apparatus has a locked position, where the mating member is secured to the hammer anvil and also secured to the engagement ring and the housing.

First Claim

See full text

Other Claims data not available

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CHERVON LIMITEDFLAT C 21/F STAGE 1 TUNG CHUN INDUSTRIAL BUILDING 9-11 CHEUNG WING RD KWAI CHUNG NT

International Classification(s)

loading....
  • 2009 Application Filing Year
  • B25B Class
  • 548 Applications Filed
  • 363 Patents Issued To-Date
  • 66.25 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20092010201120122013201420152016201720180255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Zhu, Yongbing Nanjing, CN 7 20

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • 6 Citation Count
  • B25B Class
  • 5.98 % this patent is cited more than
  • 13 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges262876926128312101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 80100 +020406080100120140160180200220240260280300320

Forward Cite Landscape

Load Citation