Search International and National Patent Collections

1. (WO2017034431) OIL FILTER

Pub. No.:    WO/2017/034431    International Application No.:    PCT/RU2015/000529
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 22 01:59:59 CEST 2015
IPC: F01M 11/03
B01D 35/14
B01D 35/153
Applicants: ZUEV, Boris Konstantinovich
ЗУЕВ, Борис Константинович
Inventors: ZUEV, Boris Konstantinovich
ЗУЕВ, Борис Константинович
Title: OIL FILTER
Abstract:
An oil filter contains a housing (1), a cap (2), a cap reinforcer (3), a filtering element (5), an anti-drainback valve (21), a bypass valve (12), and a spacer (6). An anti-drainback valve (30) is designed in the form of a disc with a central aperture. The spacer (6) contains annular elements (8, 9) of different height, which are connected by ribs (10) that form a seat (11) of the bypass valve (12), and uprights (15), which are connected by ribs (16) to the disc (17). The bypass valve (12) is designed in the form of a ring made from an elastic material and is pressed against the bypass valve seat (11) via a ring (13) by a plate spring (14), the central portion of which is locked against displacement by the ribs (16) on a projection (18) of the disc (17), and the tongues of which bear on the bypass valve (12) via the ring (13). An additional anti-drainback valve (25) with a seat in a central projection (23) of the upper cap (20) is provided, which is centered by a spring (26), which has a socket in the disc (17) and is seated on the central projection of the additional anti-drainback valve (25). The additional anti-drainback valve (25) increases the anti-drainback properties of the oil filter, thus minimizing the run-off of oil into a casing during idle time.