Liquid purification or separation – With repair or assembling means – Removable treatment part with normally disabled flow controller
Patent
1987-10-23
1990-06-19
Chin, Peter
Liquid purification or separation
With repair or assembling means
Removable treatment part with normally disabled flow controller
210232, 210238, 210440, 210443, 210450, 210456, B01D 2708, B01D 3502
Patent
active
049351354
ABSTRACT:
An oil filter available for hydraulic fluid circuit of automobiles and machine tools or the like, having a bypass-discharging passage for changing an accommodated filter element for a new one, and a film which surrounds the lower end periphery of the filter element enabling pressure transmission from the hydraulic fluid toward the filter element. The bypass-discharging passage is formed in a fastening bolt which secures a casing and its cover, and when pulling off the fastening bolt, an inlet of the circulated hydraulic fluid directly communicates with a recovery passage, thereby allowing no hydraulic fluid to pass through the filter element in the casing. The film is applied so that the pressure of the hydraulic fluid may be transmitted to the outer periphery of the filter element, causing the density of the wound filter paper to be larger than the upper portion thereof.
REFERENCES:
patent: 2533192 (1950-12-01), Kennedy
patent: 2642188 (1953-06-01), Layte et al.
patent: 3056503 (1962-10-01), Roosa
patent: 3275144 (1966-09-01), Stripp et al.
patent: 3502214 (1970-03-01), Mills et al.
patent: 3608726 (1971-09-01), Crowther
patent: 4600512 (1986-07-01), Aid
patent: 4610786 (1986-09-01), Pearson
patent: 4678572 (1987-07-01), Hehl
Nakashima Yuzuru
Yamamoto Kiyomi
Al-Flow Co., Ltd.
Chin Peter
Dang Thi
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