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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 4968224 | Vibrator for diaphragm pump and magnet holder therefor A vibrator for diaphragm pump and magnet holder for the vibrator wherein a stopper is formed on the inner perimeter of the side wall of the magnet insertion window in the vicinity of one main plane of the magnet holder, and that the supporting surface of ... | 11/06/1990 |
| 4968909 | Compact bi-directional torque motor A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite sides of the core. Two... | 11/06/1990 |
| 4968225 | Magnet holder for electromagnetic diaphragm pump A magnet holder for an electromagnetic diaphragm pump comprising a reinforcing member having at least in part thereof a width smaller than the distance between a pair of magnets placed in the predetermined positions in magnet insertion windows is provided... | 11/06/1990 |
| 4965864 | Linear motor An electromechanical linear motor incorporating a number of electrically conductive drive coils arranged axially and embedded in a composite matrix so as to form a hollow cylinder within which a piston or pistons are placed. Permanent magnets or conductiv... | 10/23/1990 |
| 4906878 | Fluid circulated linear motor for robotic systems A linear motor comprised of a plurality of primary coils arranged and spaced sequentially. A fluid intake manifold and a fluid exhaust manifold with at least one conduit in fluid communication between the intake and exhaust manifolds, such that the fluid ... | 03/06/1990 |
| 4827911 | Method and apparatus for ultrasonic surgical fragmentation and removal of tissue A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentati... | 05/09/1989 |
| 4692673 | Electromagnetic reciprocating pump and motor means An electromagnetic reciprocating motor or pump for use for providing mechanical force for actuation of other fluids or components, and includes a cylinder provided with closures at each end, at least a pair of electromagnets operatively associated with th... | 09/08/1987 |
| 4491738 | Means for generating electricity during drilling of a borehole A generator for providing electric energy in a borehole during drilling thereof, the generator comprising an anchor which is movable in a reciprocating mode in response to pressure pulses in the drilling fluid caused by rapidly opening or closing a valve.... | 01/01/1985 |
| 4443721 | Electrodynamic device for translating an objective An electrodynamic device translates an objective 1 along a path 4 in a radial direction relative to the axis of rotation 2 of an optical disc 3 and comprises a slide 6 on which the objective is arranged and a parallel-guide arrangement along which the sli... | 04/17/1984 |
| 4272225 | Electromagnetically-operated fixed displacement pump In an electromagnetically-operated fixed displacement pump, a lubricating oil storage tank and a communicating hole with one end opening upon the bottom of the tank are formed in a pump body, the other end of the hole in the pump body communicating with o... | 06/09/1981 |
| 4248225 | Gauge device for hypodermic syringes A gauge device for a hypodermic syringe may be readily applied to the flanged end of the hypodermic syringe barrel. The gauge device includes a rigid bar which is spaced a predetermined distance from the free end of the plunger of the hypodermic syringe w... | 02/03/1981 |
| 4184088 | Detachable head appliance driven by an electric motor In an apparatus which is driven by an electric motor, for example, a dry-shaving apparatus or the like, which consists of a basic appliance on which a structural unit equipped with a tool can be placed and which comprises an appliance element which perfor... | 01/15/1980 |
| 4171493 | Integral braking system for linear induction motor A linear induction motor includes one ferromagnetic member thereof which is movably resiliently mounted in the motor frame so as to move toward the stator in the motor whenever current is applied thereto. A portion of the armature in the motor extends bet... | 10/16/1979 |
| 4168577 | Device for stepwise displacement of a work-piece The present invention refers to a device for stepwise displacement of a work-piece or a similar body, the device comprising a rod made from a reversibly expanding or compressing material coupled to an activation device whereby the rod has its ends resting... | 09/25/1979 |
| 4160924 | Cryogenic temperature operated magnetic reciprocating motor system A permanent magnet armature is reciprocated between electromagnetic coil assemblies in a motor chamber that is evacuated and maintained at a cryogenic temperature by circulation of a cryogenic cooling medium through pressure sealed, coil enclosing spaces ... | 07/10/1979 |
| 4128161 | Vibratory device A vibratory feeder system includes a track having a linear, circular or helical configuration upon which articles that are to be transported are positioned. The vibratory feeder system further includes a support structure for supporting the track. The tra... | 12/05/1978 |
| 3949249 | Electro-magnetic reciprocating motor A magnetic motor wherein a piston mounted magnet is reciprocated through a predetermined stroke in timed relation to polarity reversal of a pair of electro-magnetic assemblies at opposite axial ends of the piston cylinder. Polarity reversal and the intens... | 04/06/1976 |
| 3947155 | Linear compressor A moving-iron, linear-motor compressor suitable for use in a refrigerant system, wherein a conical armature reciprocates in a complementary air-gap under the influence of an electromagnetic circuit and a pair of linear (constant rate) complementary return... | 03/30/1976 |
