Class 335/305 - Magnetic plug type (e.g., crankcase plug)

Subclass of Class 335 - Electricity: magnetically operated switches, magnets, and electromagnets
Definition: Subject matter wherein the permanent magnet is in the form
No. of patents: 28
Last issue date: 06/02/2009

Number	Title	Issue Date
7541907	Auto-aligning and connecting structure between electronic device and accessory An auto-aligning and connecting structure used to connect and align an electronic device and an accessory, wherein a plurality of first magnetic bodies are disposed on a first surface of the electrical device and a plurality of second magnetic bodies are disposed on...	06/02/2009
7357225	Two part oil or fluid drain plug with magnet A two part oil drain plug assembly facilitates the draining of oil or fluid from a sump, and its use prevents the threads of the sump, which may be an automotive oil pan, from becoming stripped or damaged. Further, the device aids in the determination of the physica...	04/15/2008
7331336	Power air-fuel levitation compression Apparatus for magnetically conditioning incoming air and fuel to an internal combustion engine to improve engine operation. Magnets are applied in a bipolar arrangement to the fuel system and air intake apparatus of an internal combustion engine system for reducing ...	02/19/2008
7289011	Animal pill magnet having single polarity An improved animal pill or cow magnet that is inserted into the stomach of a bovine animal to attract and hold tramp metal ingested by the animal so as to prevent the adverse condition commonly referred to as “hardware disease.” The disclosed device has at least...	10/30/2007
7041022	Actuator for a vehicle steering device An actuator for superimposed steering engagement in a vehicle steering system having first and second input shafts, an output shaft coaxial with the first input shaft, and a superposition gear disposed between the shafts. The superposition gear has a two-stage, modi...	05/09/2006
6946941	Permanent magnet assembly A permanent magnet assembly is disclosed that is adapted to provide a magnetic field across an arc-shaped gap. Such a permanent magnet assembly can be used, for example, to provide a time-varying magnetic field to an annular region. ...	09/20/2005
6717498	Magnetic body A magnetic body includes a disc-shaped carrier having one or more layers of magnetic powder that is blended with a viscous liquid and sprayed on outer surfaces of the carrier. Magnetic lines of the magnetic body together with earth poles produce a radiated magnetic ...	04/06/2004
6503393	Oil pan containing a magnetic filter apparatus An oil pan containing a magnetic filter apparatus includes an oil pan member having a magnet assembly reception channel. A magnetic filter assembly is received in the magnet assembly reception channel, and attachment means are provided for attaching the m...	01/07/2003
6078238	Bolt with a magnet A bolt to be screwed-in into a lubricant-containing housing, including a magnet (4), a head portion (2) having rotation-transmitting surfaces, and a shank portion (3) extending from the head portion (2) and having an outer thread (31) and a recess (32) pr...	06/20/2000
5949317	Magnetic drain plug A magnet set forth used is in a drain plug. A drain plug is assembled with an attached holder securing an inserted cylindrical magnet. The drain plug is formed of non ferrous material such as brass, aluminum, stainless steel, etc. It is constructed in acc...	09/07/1999
5564526	Magnetic drain plug A drain plug has an interior cylindrical component with exterior screw threads adapted to be threadedly secured with respect to a threaded aperture in a crank case. The drain plug also has an enlarged exterior head with an external periphery. The drain pl...	10/15/1996
5465078	Magnetic drain bolt A magnetic drain bolt comprising a bolt body and a magnet. The bolt body comprises of a male-threaded member and a head member, the male-threaded member having a fastening protuberance formed at an end thereof. The magnet is comprised of a sintered ferrit...	11/07/1995
5420557	Magnetic drain plug A magnetic drain plug comprises a resilient plastic plug member and a permanent magnet disposed therein. The plug member has a threaded upper section, a medial flange, and a lower head section with engagement surfaces for a hand tool such as a wrench. An ...	05/30/1995
5314625	External oil pan magnet The external oil pan magnet (10) is placed on the external surface of the oil pan (2) where it attracts and captures metallic particles suspended in a motor's oil supply. In a first embodiment, the external oil pan magnet (10) is comprised of magnet (12) ...	05/24/1994
4995971	Dual purpose automatic transmission oil pan A dual purpose automatic transmission oil pan (10) for covering transmission components (20,22) and containing a reservoir of oil in a sump portion (32). First and second drainback channels (34,36) extend to the sump portion (32) from spaced drain opening...	02/26/1991
4894153	Magnetic attachment for a filter A plurality of magnets are detachably attached to the exterior of the cylindrical casing of a liquid filter unit to attract and capture ferromagnetic particles from the fluid, particles too small to be captured by the basic filtering element but large eno...	01/16/1990
4851116	Magnet filter A magnet filter for removing magnetic metal powder mixed with oil in an oil reservoir or the like which is easily mounted to and dismounted from the oil reservoir. The magnet filter includes a recess formed on a top surface of a screw head having a screw ...	07/25/1989
4810148	Drain bolt A drain bolt wherein a recess is formed at the end of a male-threaded portion of a bolt body, and a sinker portion of a synthetic resin magnet is embedded in the recess of the bolt body so that a projecting portion of the magnet is projected from the end ...	03/07/1989
4763092	Magnetic filter A magnetic filter consisting of a screw plug having a recess formed at the tip end of its screw rod portion and directed in the axial direction thereof, a rod-shaped permanent magnet piece fitted in the recess, and a non-magnetic member interposed between...	08/09/1988
4752759	Magnet plug The known magnet plug in which a cylindrical permanent magnet is fitted in and secured to a recess formed in a top surface of a threaded plug main body, is improved so that the permanent magnet can be firmly secured to the plug main body without damaging ...	06/21/1988
4568901	Magnetic fuel ion modifier Elongate magnets are arranged about a copper fuel duct with each magnet having a like pole adjacent a flattened or faceted portion of the duct. Each magnet has a flat pole face and bevelled end edges with the bevelled end edges being in contact with the s...	02/04/1986
4401961	Permanent magnetic holding arrangement, particularly for temporary holding of ferro-magnetic parts A permanent magnetic holding arrangement for temporarily holding at least two ferro-magnetic parts wherein the holding of the second part does not decrease the holding of the first part. A disc-shaped permanent magnet magnetized through its smallest thick...	08/30/1983
4323843	Magnetic contamination detector Apparatus is provided for detecting ferrous contamination in a fluid such as engine transmission lubricant. The apparatus has two spaced apart electrodes, a magnetic flux extending between the electrodes the lines of force of which are substantially recti...	04/06/1982
4254393	Treatment of fuel Fuel, such as flows from a fuel pump to a carburetor, is treated by subjecting the fuel to the influence of magnetic fields and thereafter an electric field; the magnetic fields are applied by a series of sets of spaced magnets aligned with each other....	03/03/1981
4113611	Magnetic pipe cleaner A nonmetallic disc has a plurality of kerfs extending radially inwardly from the outer periphery. Magnets are disposed in the bottom of the kerfs so as to form a space between the magnets and the outer periphery of the disc to collect magnetic particulate...	09/12/1978
4100491	Automatic self-cleaning ferromagnetic metal detector A ferrous metal detecting apparatus is disclosed for detecting metal particles in a flowing fluid, such as engine oil. The detecting apparatus has soft-iron pole pieces with a bridging gap therebetween. The soft-iron pole pieces are electrically insulated...	07/11/1978
4070660	Wear particle detector A wear particle detector for use with hydraulic systems, capable of collecting wear particles formerly suspended in the hydraulic fluid and of discriminating between larger and smaller particles by indicating the former, but destroying the latter automati...	01/24/1978
4008464	Lubricant contamination warning device Apparatus for providing an electrical warning signal when ferrous contamination builds up in the lubricant of a mechanism utilizing gearing. The apparatus includes a pair of annular magnetic members positioned in a spaced-apart relation on a support membe...	02/15/1977

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Class 335/305 - Magnetic plug type (e.g., crankcase plug)