Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5886432 | Magnetically-positioned X-Y stage having six-degrees of freedom The respective square cross-section permanent magnets of each of a plurality of spaced Halbach magnet arrays, attached to the bottom of movable X-Y stage and aligned with a given one of the X and Y axes, are spaced from one another parallel to the other o... | 03/23/1999 |
| 5886442 | Magnetic attraction driving engine using permanent magnet A magnetic attraction driving engine utilizing a permanent magnet is provided with a permanent magnet, an electromagnet formed by winding a coil on a magnetic core with one end thereof stuck to one magnetic pole end of the permanent magnet, an excitation ... | 03/23/1999 |
| 5850111 | Free piston variable-stroke linear-alternator generator A free-piston variable stroke linear-alternator AC power generator for a combustion engine. An alternator mechanism and oscillator system generates AC current. The oscillation system includes two oscillation devices each having a combustion cylinder and a... | 12/15/1998 |
| 5818131 | Linear motor compressor and its application in cooling system A compressor (10; 100; 200; 300; 500) with a build-in reciprocating motor, comprises a cylindrical housing (20; 120; 210; 510) with two ends thereof fitted with two opposing electromagnets (30; 130; 230; 530), each has a circular inner pole (36; 136) and ... | 10/06/1998 |
| 5789837 | High-temperature superconducting magnetic bearing A passive magnetic bearing structure for radially supporting a rotor with respect to a stator is provided, in which a magnetic circuit is mounted on the rotor or stator for generating two strongly different axial magnetic fields in two concentric angular ... | 08/04/1998 |
| 5760501 | Compression driver motor structure A structure for a compression driver motor assembly which utilizes a pot with an integral top plate and a pole cap, thereby reducing magnetic losses and permitting manufacture of a driver structure with fewer parts and reduced weight. A more efficient pro... | 06/02/1998 |
| 5757092 | Vibratory drive unit A vibratory drive unit of modular construction includes a bottom plate, a first side plate attached to one side of the bottom plate, a second side plate attached to an opposite side of the bottom plate, a front plate attached to the bottom plate, first si... | 05/26/1998 |
| 5753985 | Electric motor with oscillating rotary output and controlled amplitude Disclosed is an AC electric motor with oscillating rotary output, a permanent magnet rotor having radially magnetized magnets, and feedback control of oscillation amplitude. Amplitude control is accomplished without a separate amplitude sensor by using an... | 05/19/1998 |
| 5747951 | Vibration motor with a rotor/stator interface made of shape memory alloy A vibration motor comprising a stator and a rotor together with excitation means for deforming said stator in a vibratory mode enabling it to rotate the rotor, the motor being characterized in that the stator and/or the rotor include(s) a shape memory all... | 05/05/1998 |
| 5696413 | Reciprocating electric generator An electric generator includes a base having an outer pole flux core supported on the base and having a linear bore extending thereinto. A plurality of permanent magnets are mounted to the outer pole along the interior of the linear bore. A center pole fl... | 12/09/1997 |
| 5693990 | Vibration isolating apparatus and vibration isolating table A vibration isolating apparatus and a vibration isolating table for reliably controlling vibration of an object of vibration isolation. A coil-mounting main body is mounted on the vibration isolating table and a yoke-mounting main body is mounted on a flo... | 12/02/1997 |
| 5691582 | Can body maker with linear motor redraw actuator A can body maker wherein the redraw sleeve is provided with an plurality of air escape openings to provide for the passage of air as the ram moves through the redraw sleeve and wherein the redraw sleeve is attached to the armature of a linear motor which ... | 11/25/1997 |
| 5614778 | Servo cylinder apparatus Compressed air is introduced into a cylinder chamber to displace a piston closely to a target position. Then, a ball screw shaft is rotated about its own axis by an electric motor to inch the piston to the target position. Upon arrival of the piston at th... | 03/25/1997 |
| 5602433 | Modular drive component for a vibratory feeder device Means and apparatus for use in a vibratory device such as an artide feeder. Said apparatus including a housing having changeable side plate selected from a group of side plates of different mass in order to allow mass adjustment of the artide feeder drivi... | 02/11/1997 |
| 5602432 | Silent warning vibration generator for portable equipment A vibration generator in a pager or massage device for giving vibration to the user including a coil fixed to a base and a movable member vibratably supported on the base. The movable member has inner and outer yokes defining therebetween a magnet gap in ... | 02/11/1997 |
| 5587615 | Electromagnetic force generator The electromagnetic force generator disclosed herein employs first and second elongate magnetic cores having transversely facing pole faces at each end, the cores being essentially parallel with pole faces aligned and facing. Between each pair of aligned ... | 12/24/1996 |
| 5578877 | Apparatus for converting vibratory motion to electrical energy An apparatus for convening vibratory motion along a predetermined vibration axis to electrical energy comprises an enclosure having first and second opposite walls substantially parallel to one another. A magnet carrier structure in the enclosure also has... | 11/26/1996 |
| 5559378 | Three-pole electromagnetic actuator for pneumatic distributing devices The present invention relates to an electromagnetic actuator comprised of a stator structure made of soft magnetic material which is unsaturated in rated operating conditions, comprising two stator parts (1 and 2) at least one of the stator structures (1)... | 09/24/1996 |
| 5554012 | Air controller for air pump An air controller for an air pump capable of simply regulating the air delivery rate of the air pump. In an air pump including an electromagnetic driving mechanism 11, 13, 14, a magnet 17 carried on the tip of an arm 16, and a diaphragm 18 connected to th... | 09/10/1996 |
| 5525845 | Fluid bearing with compliant linkage for centering reciprocating bodies An improved mechanical transducer of the type having a body reciprocating in a chamber, the body being linked to a housing by a linkage including an axially compliant spring. An anti-friction fluid bearing applies a lateral centering force upon the body a... | 06/11/1996 |
| 5495131 | Parallel air gap serial flux A.C. electrical machine An a.c. electrical machine includes a plurality of first elements spaced from each other; a plurality of second elements spaced from each other and interstitially disposed with the first elements; a plurality of electrical windings on each of the first el... | 02/27/1996 |
| 5446319 | Permanent magnet energy storage apparatus An energy storage apparatus is disclosed in which a plurality of permanent magnets are used to store kinetic energy. The apparatus includes first and second fixed magnets which are positioned a guide rod. A third moveable magnet is mounted on a guide rod ... | 08/29/1995 |
| 5444313 | Electromagnetic actuator having two opposite phase movable parts Electromagnetic actuator comprising a stationary stator (I) with a central pole (3) of length Xc and two lateral poles (4,5) of length XL, said stator including an exciting coil (6). The actuator further comprises a moving part (2) w... | 08/22/1995 |
| 5432382 | Permanent magnet energy storage apparatus An energy storage apparatus is disclosed in which a plurality of permanent magnets are used to store kinetic energy. The apparatus includes first and second fixed magnets which are positioned a distance apart along a longitudinal axis with both magnets ha... | 07/11/1995 |
| 5424592 | Electromagnetic transducer An improved electromagnetic actuator includes a first assembly, a second assembly disposed for relative movement with respect to the first assembly and at least a first flexure interconnecting the first assembly and the second assembly. The first assembly... | 06/13/1995 |
| 5406152 | Electromagnetic vibration generator An electromagnetic vibration generator includes a housing, a U-shaped magnet core disposed in the housing and having parallel-extending legs each terminating in a pole face, and an excitation winding inserted on each core leg. The magnet core is encased i... | 04/11/1995 |
| 5397922 | Integrated thermo-electro engine An internal combustion unit having a cylinder with at least one power piston with thermal means for reciprocating the power piston in the cylinder, the power piston and cylinder defining a combustion chamber, and a generator unit having a linear inductor ... | 03/14/1995 |
| 5392881 | Device for dampening vibratory motion There is presented a device for dampening vibratory motion. The device coises a ferromagnetic housing, a non-magnetic, electrically conductive wall upstanding in the housing, and a plunger assembly. The plunger assembly includes a magnetic body movable i... | 02/28/1995 |
| 5389844 | Linear electrodynamic machine A linear electrodynamic machine is disclosed having non-axisymmetric, interdigitating interfaces between moving and fixed magnetic circuit elements. The moving magnet elements may be of permanent magnet or electromagnetic construction, and in one embodime... | 02/14/1995 |
| 5361045 | High-stability resonators of solid elastic material and oscillators using them A preferred embodiment of a resonator embodying the invention comprises entially a resonating plate, an action electrode and a detection electrode, and a supporting base. The electrodes are placed facing symmetrical narrow edges of the plate, opposite vi... | 11/01/1994 |
| 5350344 | Exercise machine An exercise machine includes a weight stack with a plurality of separate weights and a lift bar for vertical movement with the stack. A pin assembly removably secures a desired portion of the weight stack to the lift bar for vertical movement therewith so... | 09/27/1994 |
| 5349256 | Linear transducer A linear transducer includes a pair of electrical conductors and first and second transducer members. The electrical conductors are spaced apart along a reference axis. The first and second transducer members are positioned transversely adjacent to each o... | 09/20/1994 |
| 5315278 | Filament magnetic flux circuit A length of wire is toroidally wound, and then the toroid is encapsulated and cut in two along a plane that is perpendicular to the toroidal axis. The resulting portions are used as stator and/or armature of a solenoid, and in the solenoid the cut face of... | 05/24/1994 |
| 5287027 | Electromagnetic drive for use with vibratory conveyors An electromechanical exciter for use in driving a vibratory conveyor includes a non-linear spring system which provides an increase in spring force as the stroke of the electromagnet increases.... | 02/15/1994 |
| 5277744 | Friction welder having a drive which produces orbital motion An electromagnetically actuated friction welder produces orbital motion at interfaces between parts (usually of thermoplastic material) to bond the parts by fusion generated by friction. This welder can also be operated alternatively to produce reciprocat... | 01/11/1994 |
| 5270594 | Compact bidirectional torque motor with increased torque A compact torque motor provides increased bidirectional, limited angle, reactionless torque to opposed structures. A torque motor (50) includes an X-shaped core (52), and first and second pole pieces (54) and (56), which are disposed at opposite sides of ... | 12/14/1993 |
| 5261799 | Balanced linear motor compressor This invention relates to balanced linear motor compressors which operate without the use of oil and externally tuned resonant balancers. Such structures of this type, generally, provide a highly reliable oil-free compressor which is internally balanced f... | 11/16/1993 |
| 5246353 | Air breezing pump An air breezing pump designed to supply air for biasing the vibrator of a speaker by providing a conventional speaker with an air inlet valve and an air outlet valve on its vibrating medium, and thereby excluding existing ducts from the enclosure of the s... | 09/21/1993 |
| 5239219 | Electromagnetic vibrating apparatus An electromagnetic feeder comprises a movable core secured to one mass of two masses connected by a resilient member, two fixed cores secured to the other mass so that said fixed cores are positioned on opposite sides of said movable core, two exciting co... | 08/24/1993 |
| 5231336 | Actuator for active vibration control An electromagnetic actuator is disclosed which is especially suitable for active vibration control applications. The actuator may be either of the moving coil or moving magnet type so that a moving element undergoes reciprocal motion in response to an ele... | 07/27/1993 |
