Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1998-06-08
2000-02-22
Ferensic, Denise L.
Fluid handling
Line condition change responsive valves
Direct response valves
1375121, F16K 1500
Patent
active
060268522
ABSTRACT:
A pressure relief valve such as is used to relieve over-pressure in the passenger compartment of an automotive vehicle has valve flaps which are retained in connection with a housing by molded-in-place retainer strips. The valve is manufactured by an injection molding tool having a pair of mold halves defining a first mold cavity for forming the housing and a second mold cavity for forming the flaps. After the housing and flaps have set, the mold is opened, with the housing remaining in contact with one mold half and the flaps remaining in contact with the other mold half. One mold half is then moved relative to the other to place the housing and the flaps in alignment with one another, and the mold halves are closed again to place the flaps inside the housing and define a third mold cavity extending along the lines of desired attachment between the flaps and the valve seats. A third quantity of thermoplastic material is injected into the third mold cavity where it sets to form the retainer strips, bonding with the edges of the flap and the adjacent edges of the valve seat. The third mold cavity also extends around a peripheral flange surrounding the housing, forming a seal which is bonded to the housing. The part is complete when ejected from the mold, with no additional assembly required.
REFERENCES:
patent: 3391628 (1968-07-01), Ziegenfelder
patent: 3405968 (1968-10-01), Feles et al.
patent: 4558634 (1985-12-01), Oshiro et al.
patent: 4667578 (1987-05-01), Hagenah
patent: 4691623 (1987-09-01), Mizusawa
patent: 4781106 (1988-11-01), Frien
patent: 4972765 (1990-11-01), Dixon
patent: 5105731 (1992-04-01), Kraus
patent: 5194038 (1993-03-01), Klomhaus et al.
patent: 5263895 (1993-11-01), Kraus
patent: 5354532 (1994-10-01), Nakai et al.
patent: 5419739 (1995-05-01), Lewis
patent: 5582789 (1996-12-01), Stein
patent: 5601117 (1997-02-01), Lewis et al.
patent: 5690881 (1997-11-01), Horie et al.
Barton Richard J.
Forster Darlene E.
Gallagher Robert M.
Martin Brian L.
Blue Water Plastics, Inc.
Ferensic Denise L.
Kim Joanne Y.
LandOfFree
Pressure relief valve and method of manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure relief valve and method of manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure relief valve and method of manufacturing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-513165