Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 4904352 | Electrodeposited multilayer coating for titanium A process for the electrodeposition of a multilayered coating on an article formed of titanium or titanium alloy comprises the steps of: (i) cleaning the article by conventional means, such as by descaling, dry blasing, soaking, and rinsing, so as to remo... | 02/27/1990 |
| 4877362 | Sheathed composite blind rivet A composite blind plastic rivet having a ductile plastic sheath fully covering the blind head on the rivet to preclude protrusion of fibers upon formation thereof.... | 10/31/1989 |
| 4862745 | Fuel tank float A fuel tank float for use with gasoline-alcohol mixtures comprising a closed container formed of a material resistant to such mixtures and filled with a slurry of a low specific gravity material such as hollow glass beads in a medium substantially similar... | 09/05/1989 |
| 4859128 | Sheathed composite blind rivet A composite blind rivet wherein a ductile metallic sheath fully covers the blind head forming portion of the rivet before and after deformation thereof so as to preclude protrustion of said fibers upon formation of said blind head. The sheath is initially... | 08/22/1989 |
| 4846674 | Method and apparatus for heating removably attachable heading tool dies An apparatus for precisely heating a continuous stream of heading tool dies to a desired temperature for immediate use thereafter in a rivet heading operation comprises a closed-loop transport system having a variable-speed drive and receptacle means for ... | 07/11/1989 |
| 4836806 | Pin connector An improved pin connector system comprising a compliant pin that effects a resilient interference fit within a complementary circular aperture of a printed circuit board. The pin utilizes an improved three beam configuration that optimizes electrical cont... | 06/06/1989 |
| 4811703 | Valve stem seal A fixed valve stem oil seal comprises a cup-shaped case engageable with the valve guide of a piston-type internal combustion engine. An "O-ring" type seal element is disposed between radial flanges on the case and the valve guide so as to be radially mova... | 03/14/1989 |
| 4811960 | Fixed valve stem oil seal A fixed valve stem oil seal comprises cup-shaped inner and outer cases engageable with the valve guide of a piston-type internal combustion engine. A seal element is disposed between radial flanges on the cases so as to be radially movable relative theret... | 03/14/1989 |
| 4799691 | Rear crankshaft seal housing with integrally bonded seal A plastic seal housing with an integrally bonded elastomeric seal for use about the rear crankshaft of an internal combustion engine featuring fewer leak paths and requiring no secondary machining of the seal housing subsequent to the molding thereof.... | 01/24/1989 |
| 4789166 | Rotary shaft wave seal A seal for use about a rotatable shaft comprises an annular cylindrical elastic sealing element having a radially inwardly extending flange defining a sealing lip at its radially innermost edge. An axially undulatory wave spring molded internally of the f... | 12/06/1988 |
| 4789343 | Electrical connectors system for adjustable automotive suspension components An improved electrical connector system for connecting an electronic control system to electrically adjustable automotive suspension components, such as shock absorbers and MacPherson struts, features ease of connectibility and serviceability, superior el... | 12/06/1988 |
| 4773363 | Fixed valve stem oil deflector An oil deflector adapted to be secured to the valve guide of an internal combustion engine comprises a generally cup-shaped molded plastic member having a seal element in a transverse end wall with lips engageable with both the valve and valve guide in se... | 09/27/1988 |
| 4763618 | Valve stem oil deflector An oil deflector adapted to be mounted on the stem of a valve of an internal combustion engine comprises a generally cup-shaped molded plastic member having a generally cylindrical section and a transversal end wall section having a bore with a radially i... | 08/16/1988 |
| 4756078 | Integrated circuit package extraction tool A tool to extract an integrated circuit package from a socket with minimal damage to package or socket.... | 07/12/1988 |
| 4752996 | Insert installation tool A tool for installing an externally threaded and keyed insert comprising a mandrel for the acceptance of an externally threaded insert. A cylindrical key-set sleeve is journaled on the mandrel and is movable axially thereof so as to bias the keys on the i... | 06/28/1988 |
| 4736865 | Engine block plug An engine block plug having a cylindrical grommet provided with a radially extending flange, a central longitudinal radially inwardly tapering aperture with an internal circumferential groove and an insert having a radially inwardly tapering outer surface... | 04/12/1988 |
| 4736507 | Tool for setting plastic rivets A tool for forming a head on a plastic rivet while achieving and maintaining "draw up" of the elements to be conjugally secured thereby. The tool may be heated to facilitate head forming and to effect complete polymerization of a plastic rivet, such as a ... | 04/12/1988 |
| 4733028 | Switch A low voltage switch having relatively long plunger travel that maximizes internal self-wiping of the contacts thereby to prolong switch life. The support for the internal contacts functions as a guide for the plunger as well as providing the necessary el... | 03/22/1988 |
| 4730836 | Gasket alignment insert An insert which ensures contiguity and proper alignment during installation of a plurality of gasket elements used to seal the joint between the mating surfaces of components comprising an internal combustion engine.... | 03/15/1988 |
| 4730583 | Valve stem oil deflector A molded thermoplastic valve stem oil deflector for an internal combustion engine comprises a two piece cup-shaped member having a skirt and a neck defined by two axially spaced radial flanges. The flanges have apertures therethrough defining a radially i... | 03/15/1988 |
| 4718801 | Composite core fastener A fastener comprises composite head and shank portions having an encapsulating metal sheath thereon that is electrically isolated from conductive fibers in the head and shank portions and from an exposed surface of the head portion.... | 01/12/1988 |
| 4717160 | High pressure rotary shaft seal A seal assembly for a shaft comprises one or more annular sealing elements having an initial internal diameter larger than the diameter of the shaft. The elements are deformed by a pair of annular backup rings disposed on opposite sides thereof. The backu... | 01/05/1988 |
| 4705277 | Hydrodynamic seal A polytetrafluoroethylene seal is provided with surface effect vanes that effect hydrodynamic pumping of oil upon rotation of a shaft about which the seal is disposed.... | 11/10/1987 |
| 4695212 | Composite channel and plate nut assembly A composite channel and plate nut assembly comprises a U-shaped channel having a plurality of apertures in the web portion thereof immediately adjacent the flanges therein for the acceptance of a plurality of downwardly extending lugs on the plate nut whe... | 09/22/1987 |
| 4687396 | One-piece composite rivet with deformable head portion and mandrel A composite rivet comprises an integral mandrel from which material is sheared to form a head on the blind side of a workpiece.... | 08/18/1987 |
| 4687397 | Composite rivet with strippable mandrel A composite rivet comprises an integral mandrel having a collar telescoped thereabout for controlling radial deformation of a head forming portion thereof.... | 08/18/1987 |
| 4687398 | Composite rivet with collar reinforced with circumferential fibers A composite rivet comprising an axially compressible and radially expandable tubular plastic preform with a mandrel extending centrally thereof and a collar radially aligned with an annular recess in said mandrel for controlling radial deformation of the ... | 08/18/1987 |
| 4687394 | Composite rivet with deformable plastic locking ring A composite rivet comprises a preformed head portion, a shear portion, an integral mandrel extending from said shear portion having an annular recess therein, a deformable plastic locking ring radially aligned with and filling the recess in said mandrel, ... | 08/18/1987 |
| 4687395 | Composite rivet with deformable annular collar containing randomly chopped fibers A composite rivet comprises a preformed head portion, a shear portion, an integral mandrel extending from said shear portion having an annular recess therein, a deformable plastic locking ring radially aligned with and filling the recess in said mandrel, ... | 08/18/1987 |
| 4681497 | Encapsulated fastener An encapsulated metal bolt comprises a head portion having an encapsulating cap thereon with a plurality of conductive fibers therein electrically isolated from the head but electrically exposed to the surface of a complementary aperture.... | 07/21/1987 |
| 4669937 | Capped nut The disclosure relates to a wheel nut comprising a nut body having conventional wrenching flats that are sheathed in part by a stainless steel sheet metal cap. The cap covers one end of the nut body and extends down the wrenching flats thereof. The nut is... | 06/02/1987 |
| 4635945 | Anti-extrusion seal with primary and secondary complementary elements A composite seal comprising a primary seal element and a secondary sealing element. The primary seal element is more readily deformable than the secondary seal element. Juxtaposed surfaces of the seal elements are configured to minimize extrusion of the p... | 01/13/1987 |
| 4632483 | Electrical terminal An electrical connector is disclosed which is of the kind comprising a male tab insertable in a female clip. The female clip (3) has the general form of a hollow parallelepiped the bottom wall (5,6) of which comprises an elastically deformable tab portion... | 12/30/1986 |
| 4630877 | Socket A socket for the reception of a bulb comprising a housing having a grommet receptacle therein for the acceptance of a grommet in sealing relationship. An electrically conductive wire extends through the grommet for connection to an internal terminal strip... | 12/23/1986 |
| 4601622 | Fastener A bolt is provided with a male thread, an end portion of which is of modified configuration, for acceptance in an element having a female thread of standard configuration. The modified portion of the male thread has a wedge ramp at the root thereof and a ... | 07/22/1986 |
| 4594039 | Fastener A fastener comprising a nut with V-threads modified to have a wedge ramp between adjacent flanks at the root thereof and characterized by the uniform pitch of the nut thread being a predetermined amount greater than the uniform pitch of the bolt thread wh... | 06/10/1986 |
| 4588248 | Socket A socket for the reception of a bulb comprising a housing having an elongated cylindrical aperture for the acceptance of a multipurpose resilient grommet in sealing relationship, an electrically conductive wire extending through the central bore of said g... | 05/13/1986 |
| 4586556 | Guide ring for bottom pour ingot mould system A quick change guide ring for a bottom pour ingot mould system to effect positioning of a plurality of moulds relative to outlets in a sprue plate.... | 05/06/1986 |
| 4586861 | Convex wedge ramp thread configuration An internal thread configuration for use in nuts and threaded holes has a wedge ramp root section that is convexly curved so that a portion thereof is substantially parallel to the axis of the threads.... | 05/06/1986 |
| 4580964 | Press loading apparatus A method and apparatus for loading an array of articles into a front loading molding press. Two pairs of rails and two carriages are utilized to facilitate the various loading movements. The first or lower pair of rails is fixed and slidably mounts the fi... | 04/08/1986 |
