The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 1996
Filed:
Feb. 17, 1995
Kyoji Kitajima, Saitama, JP;
Shunichi Nogami, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a filter device suitable for use in an automotive automatic transmission system employing a fluid torque converter, two layers of filter sheets are interposed between upper and lower casing halves provided with an outlet and an inlet, respectively. The inlet is communicated with a filter chamber defined between the upper and lower filter sheets, and a communication passage is defined between an upper chamber and a lower chamber defined above and below the filter sheets inside the casing, respectively. A pair of flow paths are defined between the inlet and the outlet. The first of the flow paths passes the upper filter sheet and heads directly for the outlet. The second of the flow paths passes through the lower filter sheet, and passes through the communication passage before heading for the outlet. An obstruction is provided in the first flow path to the end of evenly or optimally distributing the flow of the working fluid between the two filter sheets. Creation of high flow speed regions near the inlet and the outlet can be avoided even when the inlet and outlet are placed close to each other. Thus, the entire surface area of the filter element can be effectively utilized so that the filtering efficiency can be improved, and the pressure drop across the filter device can be reduced.