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
Stats
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Jul 18, 2006
Issued date -
Apr 5, 2004
filing date -
10/818,254
serial no -
In Force
status
Importance
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Abstract
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
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,105,849 Body relief valve flap | 16 | 1991 | |
| 5,419,739 Flap-type pressure relief valve and method of forming the same | 10 | 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 | |
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| 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 | 13 | 1999 | |
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| 6,135,543 Air exhaust and water management system for a motor vehicle | 3 | 1999 | |
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| 5,759,097 Air extractor valve | 6 | 1996 | |
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| 5,492,205 High cooling air flow rate brake rotor | 16 | 1994 | |
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| 5,715,782 Composite molded butterfly valve for an internal combustion engine | 35 | 1996 | |
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| 6,357,473 One way anti-backflow valve | 10 | 2000 | |
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| 4,546,695 Louvered grille unit and method of its manufacture | 8 | 1982 | |
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| 6,119,723 Apparatus for varying the flow area of a conduit | 6 | 1998 | |
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| 4,230,150 Tilting disc check valve | 32 | 1979 | |
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| 5,617,897 Nonreturn valve for medical fluid technologies | 23 | 1994 | |
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| 6,648,749 Quarter vent duct | 2 | 2002 | |
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| 5,298,215 Method for injection molding objects of at least two parts | 20 | 1993 | |
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| 6,132,308 Forced ventilation system for motor vehicles | 5 | 1999 | |
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| 5,305,787 Disk valve with improved disk mounting | 45 | 1993 | |
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| 5,295,478 Mouth-to-mask resuscitator | 21 | 1993 | |
| 5,738,087 Aerosol medication delivery system | 20 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 18, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 18, 2018 |
| 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 |