US Patent No: 7,077,742

Number of patents in Portfolio can not be more than 2000

Pressure relief valve and method of forming the same

ALSO PUBLISHED AS: 20050227607

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Importance

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Abstract

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A pressure relief valve (10) includes a housing (12) with a peripheral side wall defining at least one central airflow passage and at least one flap valve element (14). The housing (12) and the flap valve element (14) have a molded connection for enabling rotation of the flap valve element relative to the housing between a closed condition overlying the at least one central airflow passage (24) to prevent airflow from atmosphere (21) into the passenger compartment (19) and an open condition permitting airflow out of the passenger compartment of the vehicle to atmosphere. The at least one flap valve element (14) moves from the closed condition to the open condition in response to differential pressure between the passenger compartment (19) and atmosphere (21). A method of manufacturing the pressure relief valve (10) includes the steps of molding a housing (12) with a first plastic material; molding a valve element (14) with a second plastic material different from the first plastic material and forming a connection between the valve element and the housing simultaneous with the molding of a latter one of the valve element and the housing.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TRW AUTOMOTIVE U.S. LLCLIVONIA, MI135

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blake, III Thomas E South Lyon, MI 8 48
Stevenson, Jordan Walled Lake, MI 2 3

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TRW INC. (6)
5,105,849 Body relief valve flap 20 1991
5,419,739 Flap-type pressure relief valve and method of forming the same 11 1993
5,355,910 Dual component flap 18 1993
5,601,117 Flap-type pressure relief valve 14 1995
* 5,727,999 Vehicle ventilation valve 7 1997
* 5,904,618 Pressure relief valve 16 1997
 
BLUE WATER AUTOMOTIVE SYSTEMS, INC. (2)
6,026,852 Pressure relief valve and method of manufacturing the same 8 1998
6,210,266 Pressure relief valve and method of manufacturing the same 16 1999
 
CHRYSLER GROUP LLC (1)
6,135,543 Air exhaust and water management system for a motor vehicle 3 1999
 
DRAFTEX INDUSTRIES LIMITED (1)
* 5,759,097 Air extractor valve 6 1996
 
GENERAL MOTORS CORPORATION (1)
5,492,205 High cooling air flow rate brake rotor 17 1994
 
GM GLOBAL TECHNOLOGY OPERATIONS, INC. (1)
5,715,782 Composite molded butterfly valve for an internal combustion engine 39 1996
 
LIGON BROTHERS MANUFACTURING COMPANY (1)
6,357,473 One way anti-backflow valve 12 2000
 
NISSAN MOTOR CO., LTD. (1)
4,546,695 Louvered grille unit and method of its manufacture 8 1982
 
RESMED LIMITED (1)
* 6,119,723 Apparatus for varying the flow area of a conduit 9 1998
 
Schawk, Inc (1)
5,617,897 Nonreturn valve for medical fluid technologies 29 1994
 
TOYODA GOSEI CO., LTD. (1)
* 6,648,749 Quarter vent duct 3 2002
 
TRW ADVANCED PLASTIC TECHNOLOGIES GMBH & CO. KG (1)
5,298,215 Method for injection molding objects of at least two parts 20 1993
 
Wegu-und Kunststoffwerke GmbH & Co. KG (1)
* 6,132,308 Forced ventilation system for motor vehicles 7 1999
 
WEIR VALVES & CONTROLS USA INC. (1)
* 5,305,787 Disk valve with improved disk mounting 47 1993
 
Other [Check patent profile for assignment information] (2)
5,295,478 Mouth-to-mask resuscitator 25 1993
* 5,738,087 Aerosol medication delivery system 25 1996
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BROAN-NUTONE LLC (1)
D626644 Vent 1 2008
 
ITW AUTOMOTIVE PRODUCTS GMBH & CO. KG (1)
8,328,609 Ventilation assembly for the pressure relief of the interior of an automobile 2 2007
 
TRW AUTOMOTIVE U.S. LLC (1)
* 2012/0003,907 VEHICLE VENT VALVE ASSEMBLY 0 2010
 
WEGU HOLDING GMBH (1)
* 8,528,678 Integrally molded plastic part comprising a door snapping into a closed position without play 0 2013
* Cited By Examiner

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 18, 2018
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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