Hex head wrench

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5873290
SERIAL NO

08870463

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A hexagonal head wrench having a body, six sides and six corners. A protuberance is formed on each corner. Each protuberance has two oppositely oriented flank members angled at a predetermined angle outwardly and away from each corner. Engagement of the wrench with a fastener occurs on a portion of each respective flank member distal from the corner. Continued application of torque progressively radially engages each flank member with the fastener.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EASCO HAND TOOLS, INC.SIMSBURY, CT9

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chaconas, Peter Constantine Glyndon, MD 7 271

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TEXTRON IPMP L.P. (1)
* 5279190 Elliptical lobed drive system 58 1993
 
Other [Check patent profile for assignment information] (1)
* 4625598 Positive engagement screw driver tool 16 1985
 
SIMONS, LEON, 303 EAST 57TH STREET, NEW YORK, NY. (1)
* 4338835 Recessed head fastener and driver therefor 27 1980
 
WERA WERK HERMANN WERNER GMBH & CO. KG (2)
* 5284075 Screwing tool, particularly a screwdriver 6 1992
* 5259279 Slot screwdriver 9 1992
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
6276242 Drain compression ring wrench 2 2000
* 8302255 Hexagonal wrench 4 2010
* 2011/0271,800 HEXAGONAL WRENCH 1 2010
 
HAND INNOVATIONS LLC (1)
* 2005/0166,724 Twisted and tapered driver for a threaded fastener 10 2004
 
BASF CORPORATION (1)
* 2005/0221,078 Lignocellulosic composite material and method for preparing the same 2 2004
 
NEW WAY TOOLS CO., LTD. (2)
* 8640575 Ball end hex wrench 2 2011
* 2013/0047,798 Ball End Hex Wrench 0 2011
 
WERA WERK HERMANN WERNER GMBH & CO. KG (1)
* 6263771 Force transmission structure especially for a screwing wrench with multiple corners 0 2000
 
PHILLIPS SCREW COMPANY (2)
* 6152000 Driver bit and driver 6 1998
6609862 Tool bit 3 2001
 
INFASTECH INTELLECTUAL PROPERTIES PTE. LTD. (1)
* 2013/0213,193 TAPERED LOBULAR DRIVER AND FASTENER 5 2012
 
SYNTHES USA, LLC (1)
7225710 Combination driver and combination fastener 23 2005
 
DIONEX CORPORATION (2)
* 8037788 Tight-spot fitting and driver, and method of use thereof 3 2008
* 2010/0018,359 Tight-spot fitting and driver, and method of use thereof 2 2008
* Cited By Examiner