DONALD B SCHMIDT, II
Electrician at Steves Ave, San Antonio, TX

License number
Texas 281962
Expiration Date
Apr 16, 2017
Category
Journeyman Electrician
Address
Address
846 Steves Ave, San Antonio, TX 78210
Phone
(210) 426-6985

Professional information

Donald Schmidt Photo 1

Modified Full-Flow Filter And By-Pass Filter Apparatus For Internal Combustion Engines

US Patent:
4524733, Jun 25, 1985
Filed:
Nov 14, 1983
Appl. No.:
6/550872
Inventors:
Donald R. Schmidt - San Antonio TX
Assignee:
Encon Systems, Ltd. - San Antonio TX
International Classification:
F01M 100
US Classification:
123196A
Abstract:
Oil filter apparatus including a first modified high performance full-flow filter and a second super efficient by-pass filter. The modified full-flow filter is adapted to permit the attachment of a by-pass filter hose thereto on the forward end thereof for passage of a portion of oil from the modified full-flow filter to the by-pass filter. A drain plug hose is further connected to the by-pass filter for passage of oil from the by-pass filter to the oil pan. The by-pass filter hose and drain plug hose are connected to the modified full-flow filter, by-pass filter, and the oil pan by means of pivotal swivel fittings adapted to permit attachment of the filter apparatus to any make automobile. The by-pass filter may be mounted inside of a neoprene coated nylon sleeve, by a special mounting bracket, or by a modified by-pass filter base. A method of retrofitting an engine to accommodate the oil filter apparatus is also provided.


Donald Schmidt Photo 2

Full-Flow Filter For Internal Combustion Engine, Adaptable For Use With A By-Pass Filter

US Patent:
4672932, Jun 16, 1987
Filed:
Oct 7, 1986
Appl. No.:
6/916194
Inventors:
Donald R. Schmidt - San Antonio TX
Assignee:
Encon Systems, Ltd. - San Antonio TX
International Classification:
F01M 100
US Classification:
123196A
Abstract:
An apparatus for filtering the oil flow of an engine. The apparatus includes a full-flow filter, whose forward end is adapted to permit use of the full-flow filter either with or without a by-pass filter. The rear end of the full-flow filter is attached to an oil filter bushing, in the same manner as the typical spin-on type oil filter. If the user desires to use the full-flow filter with the by-pass filter, a small hole may be punched in the forward end of the full-flow filter. From this hole, a small portion of oil flows through a connecting hose into the by-pass filter. This small portion of oil is then filtered by the by-pass filter and flows out of the by-pass filter through a second connecting hose to an existing oil system line access, such as the drain pan plug, oil filter cap, or engine valve cover. The by-pass filter is mounted to the engine with a sleeve having grommets. A method of retrofitting an engine for use with the full-flow filter and by-pass filter is also provided.


Donald Schmidt Photo 3

Full-Flow And By-Pass Filter Conversion System For Internal Combustion Engines

US Patent:
4452695, Jun 5, 1984
Filed:
Jul 14, 1983
Appl. No.:
6/513733
Inventors:
Donald R. Schmidt - San Antonio TX
Assignee:
Energy Extension Industries - San Antonio TX
International Classification:
B01D 2710
US Classification:
210168
Abstract:
The filter system includes a high performance full-flow filter and the second super efficient by-pass filter. An adapter and adapter bushing is located between the engine block and the full-flow filter. The adapter is tapped to provide a pressure source through a filter hose to the by-pass filter. The by-pass filter is then connected to the low pressure side of the oil by connecting through a special drain plug fitting. The hoses are connected to the by-pass filter and the drain plug through a special pivotal connection to fit any make automobile. The by-pass filter may be mounted inside of a neoprene coated nylon sleeve or by a special mounting bracket.