US Patent No: 7,007,658

Number of patents in Portfolio can not be more than 2000

Vacuum shutdown system

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Importance

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Abstract

A device for shutdown of an internal combustion engine which provides for the cessation of fuel and air mixture in a carburetor supplying the cylinders of the engine with fuel for ignition. The device features a conduit in sealed engagement with the fuel supply bowl of the carburetor which may by switched from engagement between the atmosphere or a negative air pressure supply. When switched to communication with negative air pressure the device causes a vacuum in the fuel bowl of the carburator thereby ceasing fuel flow and shutting down the engine due to lack of fuel.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SMARTPLUGS CORPORATIONSANDPOINT, ID1

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cherry, Mark A Sandpoint, ID 6 90
Chudyk, Stephen Michael Sandpoint, ID 1 11
Course, Richard D Sandpoint, ID 1 11

Cited Art

Patent Info (Count) # Cites Year
 
KELLER, JOHN M. (1)
6,371,074 Method and apparatus for preventing backfiring in spark ignition, internal combustion engines 4 2000
 
WALBRO ENGINE MANAGEMENT, L.L.C. (1)
6,615,792 Carburetor fuel shut-off system 12 2002

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
MCALISTER TECHNOLOGIES, LLC (11)
8,297,254 Multifuel storage, metering and ignition system 0 2009
8,413,634 Integrated fuel injector igniters with conductive cable assemblies 0 2010
8,387,599 Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines 0 2010
8,365,700 Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control 0 2010
8,267,063 Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control 0 2010
8,192,852 Ceramic insulator and methods of use and manufacture thereof 0 2010
8,074,625 Fuel injector actuator assemblies and associated methods of use and manufacture 0 2010
8,225,768 Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture 0 2010
8,091,528 Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture 1 2010
8,297,265 Methods and systems for adaptively cooling combustion chambers in engines 0 2011
8,205,805 Fuel injector assemblies having acoustical force modifiers and associated methods of use and manufacture 0 2011

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 7, 2013
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 7, 2017
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00