End caps for filter elements

Details End caps for filter elements End caps for filter elements

1991-04-26

1993-08-24

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

2104932, 210454, 210232, 2103232, B01D 2708

Patent

active

052387178

ABSTRACT:
An end cap for a filter element comprises first and second concentric components of a thermoplastic material. The first of the components forms a side wall and a base of a peripheral groove of the end cap while the second of the components forms a second side of the peripheral groove. The first and second components are connected by a weld extending around the components in the region of the peripheral groove. The weld may be an ultrasonic weld. This prevents distortion of the components at high temperatures by strengthening the composite while allowing use of lightweight inexpensive components that have smooth sealing surfaces with no injection mould parting lines.

REFERENCES:
patent: Re29447 (1977-10-01), Farrow et al.
patent: 3850813 (1974-11-01), Pall et al.
patent: 3867294 (1975-02-01), Pall et al.
patent: 4402830 (1983-09-01), Pall
patent: 4725323 (1988-02-01), Ostreicher et al.
patent: 4799602 (1989-01-01), Collins et al.
patent: 4908130 (1990-03-01), Lynne

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