Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1995-08-07
1997-04-01
Denion, Thomas E.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
92103R, 92 96, 92261, F01B 1900
Patent
active
056155972
ABSTRACT:
A pump diaphragm that is composed of two different shore-hardness materials of the same base polymer. The diaphragm includes a strong layer that will withstand hydraulic pressures and one or more soft layers that can be shaped into desirable sealing configurations. The diaphragm is constructed by first injecting a first thermoplastic material, with a relatively lower percentage of rubber filler, into a mold cavity and allowing the first material to cure. The hardened first material is then placed into a second mold cavity. A second thermoplastic material which contains the same base polymer but a relatively higher percentage of rubber filler is then injected into the second cavity. The first and second material utilize the same base polymer and thus will have the same melt temperature, as well as a strong propensity to bond to each other when molten. The second material is introduced to the cavity at a temperature that melts the interface of the first material. As the second material and the interface hardness, the two layers have become chemically welded together. The second cavity gives shape to the sealing areas of the diaphragm.
REFERENCES:
patent: 4020828 (1977-05-01), Steed
patent: 5353689 (1994-10-01), Bolt et al.
patent: 5466146 (1995-11-01), Fritz et al.
Aquatec Water Systems, Inc.
Denion Thomas E.
LandOfFree
Composite diaphragm for diaphragm pumps having two different sho does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite diaphragm for diaphragm pumps having two different sho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite diaphragm for diaphragm pumps having two different sho will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-531700