Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7288139 | Three-phase cyclonic fluid separator with a debris trap An apparatus separates liquid, gas and solid components of a mixture in a fluid system. An inlet for receiving the mixture opens into a separation chamber tangentially with a cylindrical side wall and a gas outlet has an opening in a first end wall adjacent the inle... | 10/30/2007 |
| 6874608 | Clutch internal shielding device A frictional clutch for a motor vehicle includes a cover, a pressure plate, a biasing member, an adjustment mechanism and a dust shield assembly. The cover has an axis of rotation. The pressure plate is coupled to the cover for rotation therewith about the axis. The... | 04/05/2005 |
| 6769720 | Coupling assembly with profiled ramp A coupling assembly includes a female member having a receiving end with an axially extending passageway and inwardly facing groove extending outwardly from said passageway in a position spaced from the receiving end. A split metal locking ring is positioned in the ... | 08/03/2004 |
| 6666313 | Dual mass clutch system A dual mass flywheel and clutch system for minimizing torsional vibration levels during engine start-up and during low speed engine operation where the rotational moment of inertia of a clutch input assembly is minimized to raise the torsional natural fre... | 12/23/2003 |
| 6666315 | Ball ramp clutch with indexing plates A driveline master clutch assembly is disclosed where a unidirectional ball ramp mechanism is used to apply a clamping load to a clutch pack for frictionally coupling a prime mover such as an engine to a gear change transmission. The ball ramp mechanism i... | 12/23/2003 |
| 6637569 | Ball ramp actuator with indexing plates A ball ramp mechanism is used to apply an axial force in the same regardless of the direction of the flow of torque whenever there is relative rotation between an input shaft and an output hub using unidirectional grooves in both a control ring and an act... | 10/28/2003 |
| 6561332 | Ball ramp clutch with frictional damping A ball ramp mechanism is used to apply a clamping load to a clutch pack to rotationally couple an input shaft to an output shaft. The ball ramp mechanism is comprised of a control plate having a control extension radially extending therefrom and an activa... | 05/13/2003 |
| 6443284 | Torsion bar isolator Disclosed herein is an apparatus and system for isolating torsional vibrations in a driveline having a friction torque device and a ratio-change transmission. The friction torque device includes a driven member having radially extending projections for co... | 09/03/2002 |
| 6374944 | Silencer with internal rain diverter Disclosed herein is a silencer for reducing acoustic energy in a flow of exhaust gas from a combustion power source which prevents rain or snow from entering an exhaust stack without the need for a weather cap or hood. The silencer achieves acoustic energ... | 04/23/2002 |
| 6082504 | Friction brake device utilizing dual ball ramp devices A friction brake assembly for applying a braking torque to a rotating shaft such as a transmission output shaft utilizing a primary ball ramp mechanism having a control ring and activation ring with opposed variable depth grooves and rolling members dispo... | 07/04/2000 |
| 6039163 | Clutch friction disc balancing method A method of balancing a clutch disc using one or more balancing weights inserted into balancing voids formed in the clutch disc carrier plate which are trapped between the friction facings. A first method involves determining the imbalance of the complete... | 03/21/2000 |
| 6039014 | System and method for regenerative electromagnetic engine valve actuation A system for actuating an engine valve includes a linear machine having a coaxially aligned field assembly and armature assembly. In one embodiment, the field assembly reciprocates relative to the armature assembly to actuate the valve. One configuration ... | 03/21/2000 |
| 6013959 | Lamination structure for an electromagnetic device A lamination structure for an electromagnetic device such as a linear machine having a coaxially aligned field assembly and armature assembly. In one embodiment, the field assembly reciprocates relative to the armature assembly to actuate the valve. One c... | 01/11/2000 |
| 5690066 | Engine valve control actuator with knee action linkage A latchable rocker arm is actuated with a solenoid device having a stator and an armature where the armature is connected to an output link which is connected to a first connecting link and a second connecting link which are disposed to form a "knee" link... | 11/25/1997 |
| 5682848 | Engine valve control system using a latchable rocker arm activated by a solenoid mechanism A valve control system for an internal combustion engine which does not require synchronization with the engine rotation is disclosed. The system includes an actuator having a coil electrically energized by a control unit causing a stator to magnetically ... | 11/04/1997 |
| 5682846 | Engine valve actuator with differential area pistons A high pressure fluid is used to power an actuator for opening and closing an engine poppet valve when the actuator has a valve stem supporting an upper piston and an adjacent lower piston which axially transverse an actuator housing in response to the fl... | 11/04/1997 |
| 5680328 | Computer assisted driver vehicle inspection reporting system A computerized electronic system (10) for use in conjunction with a fleet of vehicles for complying with pre- and post-trip vehicle inspection reporting requirements while improving fleet maintenance and operations efficiency. An on-board computer (OBC) (... | 10/21/1997 |
| 5623897 | Engine valve control system using a latchable rocker arm activated by a solenoid mechanism A valve control system for an internal combustion engine which does not require synchronization with the engine rotation is disclosed. The system includes an actuator having a coil electrically energized by a control unit causing a stator to magnetically ... | 04/29/1997 |
| 5619958 | Engine valve control system using a latchable rocker arm A valve control system for an internal combustion engine. The system includes an outer rocker arm which is engageable with an engine poppet valve, and an inner rocker arm which is engageable with a cam lobe formed in an engine camshaft and a slidable latc... | 04/15/1997 |
| 5617067 | Electromagnetic actuator having a low aspect ratio stator An electromagnetic actuator having a coil, stator and an armature where dual parallel channels are formed in the stator for receiving the coil and where the armature is hinged to the stator for movement toward the stator upon application of an electrical ... | 04/01/1997 |
| 5597991 | Enclosed electrical power disconnect switches and circuit breaker An electrical power switch assembly has a disconnect switch electrically connected to a circuit breaker mounted within an enclosure having a hinge cover where the disconnect switch has a movable element that opens and closes electrical contacts. The movab... | 01/28/1997 |
| 5582141 | Engine valve hydraulic actuator locating mechanism An engine valve hydraulic actuator having an upper actuator housing slidably attached to a lower actuator housing is disposed between an oil supply header and an engine cylinder head where the supply header and the cylinder head are fixed relative to one ... | 12/10/1996 |
| 5507316 | Engine hydraulic valve actuator spool valve A lightweight spool valve for an engine hydraulic valve actuator having a lightweight main body with a center bore therethrough with one end plugged to balance hydraulic forces and a soft iron magnetic ring attached to the main body where the magnetic sle... | 04/16/1996 |
| 5471052 | Color sensor system using a secondary light receiver A system for photoelectrically sensing the color of an object includes two or more light sources having different characteristic ranges of chromaticity and one primary photosensitive element which receives light from the light sources after it has reflect... | 11/28/1995 |
| 5448973 | Method of reducing the pressure and energy consumption of hydraulic actuators when activating engine exhaust valves A method of operating at least two exhaust valves in an engine cylinder using a four-way hydraulic actuator to open a first exhaust valve and after a time delay using a three-way hydraulic actuator to open a second exhaust valve to minimize the overall en... | 09/12/1995 |
| 5441389 | Eddy current drive and motor control system for oil well pumping An eddy current coupling with an electrically controllable field current is used to rotatably connect a drive motor to an oil well pumping mechanism where the eddy current drive speed is controlled to a reference speed using a speed feedback control syste... | 08/15/1995 |
| 5430613 | Current transformer using a laminated toroidal core structure and a lead frame A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surf... | 07/04/1995 |
| 5425166 | Current transformer using a laminated toroidal core structure and a lead frame A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surf... | 06/20/1995 |
| 5397924 | Truck tractor and trailer electrical communication system A truck tractor and trailer electrical communication system having one electronic control unit located in tractor and another electronic control unit located in at least one trailer both respectively controlling the state of a plurality of switching devic... | 03/14/1995 |
| 5383538 | Brake squeal spring clip dampener A drum brake spring clip dampener for reducing the level of brake squeal noise where the spring clip dampener includes a leaf spring disposed into a gap formed between a wheel rim and an annular brake drum squealer band and where the leaf spring is held i... | 01/24/1995 |
| 5377797 | Clutch engagement control method in response to transmission shift lever position A method to control a driveline clutch system disposed between an engine and a manual or semi-automatic transmission where position sensors indicate the location of a gearshift lever in a gear selection gate to provide information to a clutch controller c... | 01/03/1995 |
| 5369879 | Method of mounting a semiconductor device to a heat sink A method of mounting a semiconductor device to a heat sink where an opening in the circuit board is formed and sized to allow the semiconductor device to pass therethrough, where a heat sink is positioned on one side of the circuit board and a load is int... | 12/06/1994 |
| 5359309 | Multiple pole solenoid using simultaneously energized AC and DC coils A multiple pole solenoid (10) having outer pole flanges 44a-44d and inner pole flanges 46a-46d magnetically act on outer armature flanges (32-35) and inner armature flanges (36-39) respectively, to move an armature (14) where an AC coil (16) and a DC coil... | 10/25/1994 |
| 5351024 | Electrical contactor and interrupter employing a rotary disc An electrical power switching device employing a rotary disc driven by an actuation means whose position is selected by a control means where disc contacts engage and disengage stationary contacts where the stationary contacts are deflected away from the ... | 09/27/1994 |
| 5339519 | Method of cooling an electrical device using a heat sink attached to a circuit board containing heat conductive layers and channels A method of attaching a heat sink to a circuit board for cooling an electrical device mounting system employing a plurality of heat conductive layers embedded in a printed circuit board where heat conduction therebetween is facilitated by a plurality of h... | 08/23/1994 |
| 5283908 | Elastic garment with displaceable section An elastic garment stretched from the wearer's shoulders to the legs and encircling the wearer's legs with leg portions and having a crotch section covering the wearer's crotch and having a posterior opening which is covered by a posterior cover formed by... | 02/08/1994 |
| 5102332 | Braided fiber dental retainer and container therefor A container for a dental retainer consisting of a straight or curved section of hollow tubular material that is opaque to a resin curing light source which encloses a length of fiber which can be braided that is preimpregnated with a light curable bonding... | 04/07/1992 |
