Patents Represented by Attorney, Agent or Law Firm Donald E. Stout
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Patent number: 5620720Abstract: The invention provides a disposable plastic mold assembly for an intraocular lens or the optic body thereof, which is inexpensive, less labor intensive than prior art intraocular lens molding techniques, and produces an intraocular lens having smooth, polished edges which require little or no post-mold finishing work. Numerous innovative features of the invention include an edge design which assures a seal between the male and female molds to thereby minimize flash during the cast molding operation, and the provision of a way to pre-align the male and female molds during assembly, consisting of an interference fitting relationship between the male and female molds.Type: GrantFiled: November 29, 1994Date of Patent: April 15, 1997Assignee: AllerganInventors: Robert E. Glick, Jim Deacon, Bruce W. Kent
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Patent number: 5611509Abstract: A quick release mechanism is provided for securing a member to a structure, such as a support leg to a sign stand, wherein the member includes a slot having a bottom surface and the structure has a slot having an open top end. A latch member releasably attaches the member to the structure, and is adapted to extend axially through both the member and structure slots, so that a proximal portion of the latch member extends forwardly of the member slot and a distal portion of the latch member extends rearwardly into the structure slot. With this arrangement, when the latch member proximal portion is actuated downwardly, the latch member distal portion swings upwardly through the open top end of the structure slot, thereby disengaging from the structure slot and releasing the member so that it may pivot relative to the structure.Type: GrantFiled: November 22, 1994Date of Patent: March 18, 1997Assignee: Traffix Devices, Inc.Inventors: Jack H. Kulp, John D. McKenney
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Patent number: 5589648Abstract: A gripping apparatus for a pool or spa water test kit is provided, which comprises a tubular handle element and a retaining bracket adapted to receive and securely grip the water test kit. The gripping apparatus may be used to manipulate the water test kit into any predetermined submerged location within the pool or spa from a remote location spaced from the edge thereof, for the purpose of obtaining one or more water samples. The ability to submerge the test kit into the water from a remote location eliminates the need in the prior art to kneel down at the edge of the pool or spa or to extend one's arm into the water to obtain necessary water samples.Type: GrantFiled: November 18, 1994Date of Patent: December 31, 1996Inventor: Matthew A. Valbuena
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Patent number: 5588800Abstract: An active control device for reducing blade-vortex interactions (BVI) noise generated by a rotorcraft, such as a helicopter, comprises a trailing edge flap located near the tip of each of the rotorcraft's rotor blades. The flap may be actuated in any conventional way, and is scheduled to be actuated to a deflected position during rotation of the rotor blade through predetermined regions of the rotor azimuth, and is further scheduled to be actuated to a retracted position through the remaining regions of the rotor azimuth. Through the careful azimuth-dependent deployment and retraction of the flap over the rotor disk, blade tip vortices which are the primary source for BVI noise are (a) made weaker and (b) pushed farther away from the rotor disk (that is, larger blade-vortex separation distances are achieved).Type: GrantFiled: May 31, 1994Date of Patent: December 31, 1996Assignee: McDonnell Douglas Helicopter Co.Inventors: Bruce D. Charles, Ahmed A. Hassan, Hormoz Tadghighi, Ram D. JanakiRam, Lakshmi N. Sankar
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Patent number: 5589758Abstract: A power system provides various levels of electrical power at various radio frequencies to specific input locations of a neutral particle beam accelerator system. Both the power system and the accelerator system are mounted on a space platform. The power system includes separate modules mounted on two hinged members of the platform. The modules utilize turbines, generators and fuel cells to provide the needed electrical power which is amplified to the desired levels required by the accelerator system. In addition, a fuel cell is utilized to power a pulse drive motor to drive the generators during turbine start up in order to provide high voltage output power during the start up. A regenerator produces hydrogen and oxygen from the water effluent produced by the fuel cells and the combustors which powers the turbines thereby recycling the fuel and working fluid and consequently making the power system generally non-contaminating and fuel efficient.Type: GrantFiled: September 7, 1993Date of Patent: December 31, 1996Assignee: McDonnell Douglas CorporationInventors: James B. Blackmon, Robert E. Drubka, Nelson E. Jones, R. Andrew Gerrick, Michael L. Hand
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Patent number: 5583312Abstract: There is provided a renewable energy source ejector rack for retaining and releasing stores (bombs or the like) on an aircraft, which has on-board pressurization capability, employs a single pressurization system for two or more release mechanisms, and uses air or other clean non-pyrotechnic pressurized gases both as the energy source and energy transfer medium. The aircraft contains a miniature compressor and purification system. Ambient air is filtered, dried and stored as an energy medium. Since the compressor system is onboard, the pressure can be constantly maintained regardless of temperature change. Using purified air eliminates the excessive cleaning burden imposed when using state-of-the-art pyrotechnics, and eliminates the sealing problems associated with hydraulics.Type: GrantFiled: March 1, 1995Date of Patent: December 10, 1996Assignee: McDonnell Douglas Helicopter CompanyInventor: Thaddeus Jakubowski, Jr.
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Patent number: 5570682Abstract: A hand-held nebulizer system is provided which nebulizes during the patient's inspiration cycle only. The system includes a universal sensor port adapter which is adapted to fluidly connect an airway device with a sensor port of the system's source of pressurized gas in such a manner as to permit the patient to inhale and exhale atmospheric air, while permitting the use of standard airway devices. A unique valve arrangement is also provided in the device for supplying the pressurized gas which permits the system to be extremely sensitive to small pressure differentials, thereby ensuring that the system detects the respiratory cycle phases of even the weakest patients.Type: GrantFiled: December 14, 1993Date of Patent: November 5, 1996Assignee: Ethex International, Inc.Inventor: Robert J. Johnson
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Patent number: 5567535Abstract: Currently, fiber/metal laminate sheets are limited in width due to restrictions in the width of thin metal sheets available. This invention solves that problem by providing an integral splice concept and a method for manufacturing a laminate employing the inventive concept. Specifically, a fiber/metal laminate sheet is provided having at least two metal plies and at least one fiber layer. Each of the metal plies comprises at least two metal sheets which are arranged side-by-side and have sheet metal breaks therebetween. All of the sheet metal breaks lie within the integral splice. An important feature of the invention is that the sheet metal breaks in each metal ply are staggered widthwise across the laminate with respect to the sheet metal breaks in the remaining metal plies, in accordance with a predetermined metal break staggering pattern, thereby maximizing the bond engagement of the discontinuous metal plies with the adjacent fiber layers.Type: GrantFiled: May 4, 1994Date of Patent: October 22, 1996Assignee: McDonnell Douglas CorporationInventor: Richard G. Pettit
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Patent number: 5560732Abstract: A safety delineator is provided having either a conical or a tubular body portion, which has an improved handle feature permitting easy and comfortable full hand gripping of the delineator. The invention additionally solves a longstanding problem common to prior art support bases for delineators and the like, by providing a convenient handle, molded integrally with the support base element, for picking up the base. The inventive handle not only provides a convenient means for grabbing the delineator, but it also provides an additional advantage with respect to conical delineators, in that it prevents them from sticking together when they are stacked. Two types of inventive support bases are disclosed. One is a base molded from a heavy solid material, such as rubber, and includes additional advantageous features such as anti-skid grippers on the bottom surface of the base element and stacking rings molded onto the upper surface of the base element for assisting in compactly stacking a plurality of bases.Type: GrantFiled: February 10, 1994Date of Patent: October 1, 1996Assignee: Traffix DevicesInventors: Jack H. Kulp, James P. Sullivan
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Patent number: 5559911Abstract: An optical fiber manifold is provided for coupling light from an illumination source to a plurality of spaced, large diameter output fibers, or "light pipes", which are used for a variety of purposes, such as illuminating pools, spas, hazardous material zones, jail cells, and other applications where direct lighting is dangerous, difficult to maintain, or subject to vandalism. The manifold comprises a light converging element, which may be either a lens or a reflector, for converging light separately on each of the spaced optical fibers. The light converging element is segmented, with each segment corresponding to one of the optical fibers, and is precise enough that substantially all of the convergent light is received by the respective cores of each of the spaced output fibers, thereby minimizing light loss.Type: GrantFiled: January 17, 1995Date of Patent: September 24, 1996Assignee: Radiant Imaging, Inc.Inventors: John F. Forkner, Andrew P. Riser, Ronald F. Rykowski, Stephen S. Wilson
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Patent number: 5533363Abstract: A pierced earring converter comprising a cuff sized and configured to be worn on the cartilage of the ear along the side of the ear, a hanger carried by the cuff and extending from the cuff and a mounting member carried by the hanger. The mounting member is sized and configured to receive a post of a pierced ear earring so that the pierced ear earring can be worn by a wearer who does not have pierced ears.Type: GrantFiled: January 7, 1994Date of Patent: July 9, 1996Inventor: Sandra L. Callisto
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Patent number: 5527155Abstract: A variable pitch fan for a helicopter equipped with a NOTAR.TM. mechanical antitorque directional control system comprises a plurality of blade assemblies. Each blade assembly includes a blade portion, which is molded from a blended material which includes fiber reinforced polypropylene. A key to the invention is the use of long fibers, having a length of at least approximately one-half inch, for reinforcement, the long fibers providing for about twice the pull-out strength of short or chopped fibers. Another key aspect of the invention is the use of a blowing agent in the blended material, which serves to reduce weight and warpage by creating a foamed structure having a variable density, the structure retaining considerable strength because of the fiber reinforcement. The blade portion is molded about a spar which has holes therethrough, the holes providing a mechanical interlock between the blade and the spar.Type: GrantFiled: November 1, 1993Date of Patent: June 18, 1996Assignee: McDonnell Douglas Corp.Inventors: Steve P. Chen, John E. Schibler, Ramesh J. Patel
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Patent number: 5527049Abstract: A stabilizing or digger accessory for in-line skates is provided which is adapted to assist roller hockey goaltenders by permitting them to stabilize themselves in a stationary position in goal so that they may react laterally to incoming shots on goal. The digger accessory is easily installed and removed, replacing the frontmost wheel of the skate, so that it may be utilized while the skater is tending goal but removed when he or she wishes to skate normally. Furthermore, even when installed, because of its configuration and orientation with respect to the remaining wheels, the goaltender may skate normally with only a slight change of skating style, so that he or she may easily perform those goaltending duties which require mobility. Essentially, the digger accessory comprises a molded rubber insert wherein the bottom surface consists of a tread. When the heel of the skate is lifted, the tread contacts the skating surface to prevent rolling of the skate.Type: GrantFiled: March 3, 1995Date of Patent: June 18, 1996Inventor: Juan C. Ortiz
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Patent number: 5518210Abstract: A fixed seal plate for an aircraft functions to seal the gap between a movable flight control surface and its associated airfoil when the control surface is in a deflected position. The seal plate is fixed to the airfoil (typically a wing) so that it does not articulate with the airfoil movable surface, therefore having no moving parts, yet blocks airflow through the gap effectively enough to measurably improve aircraft flight performance by reducing aerodynamic drag.Type: GrantFiled: April 11, 1994Date of Patent: May 21, 1996Assignee: McDonnell Douglas CorporationInventor: Darren A. Friberg
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Patent number: 5505686Abstract: An endoscope including an elongated endoscope body sized and adapted for insertion into a passage, such as a passage of the body of a patient. Optical components are carried by the endoscope body to enable viewing of the passage distally of the distal end of the endoscope body within a field of view of the endoscope. An elongated, resilient member is mounted on and carried by the endoscope body such that the endoscope body and the resilient member are a unitary assembly which can be inserted as a unit into the passage. The resilient member extends beyond the distal end of the endoscope body and is capable of contacting material within or forming the passage and relatively displacing the distal end of the endoscope body and such material within the field of view of the endoscope to enhance viewing of the passage with the endoscope.Type: GrantFiled: May 5, 1994Date of Patent: April 9, 1996Assignee: Imagyn Medical, Inc.Inventors: Allan F. Willis, Richard L. Quick, Hien Van Nguyen, Tuoc T. Nguyen, John P. Greelis
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Patent number: 5494180Abstract: A hybrid resistance card (R-Card) is manufactured using a two-step process wherein an electrically conductive ink layer and an electrically resistive ink layer are printed onto a surface, which may be either a substrate or the part on which the R-Card is to be used. The conductive ink layer is selectively applied in a pattern of shapes to electrically short out portions of the resistive ink layer, thereby permitting the R-Card to have a predetermined resistive taper across its width according to a desired resistivity curve. The resistive ink layer comprises grid-like lines bordering and separating the conductive shapes. The resistive taper is substantially continuous along the length of the R-Card, at least linearly, though if the card is designed to cover an entire part, it is substantially continuous along a plurality of directions on the card, with the tapers being designed to round into one another.Type: GrantFiled: September 26, 1994Date of Patent: February 27, 1996Assignee: McDonnell Douglas Helicopter CompanyInventor: Stephen A. Callahan
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Patent number: 5491307Abstract: Single expansion ramp to extend from the exhaust opening of a fluid nozzle. A surface of the ramp lying adjacent to fluid flow exhausting the nozzle is porous. The ramp of the present invention reduces the shock wave noise resulting from supersonic flow exhausting the nozzle by causing the formation of weak compression waves in the exhaust plume, which in turn weaken the strength of the standing shock waves in the plume.Type: GrantFiled: October 5, 1990Date of Patent: February 13, 1996Assignee: McDonnell Douglas CorporationInventor: Richard W. Wlezien
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Patent number: 5489830Abstract: The control system includes a control member connected to a control centering device which resists operational control member movement and returns it to a neutral position upon release thereof. Force and position sensors connected to the control member determine operator force exerted thereon as well as the position thereof. Output from the sensors is transmitted to a computer which also receives data relating to position of aircraft controlled surfaces and aerodynamic forces acting on the aircraft as well as flight data, etc. The computer combines and compares that data with other data relating to frictional forces produced by movement of the mechanical control system and data relating to desired control member resistive forces under predetermined operational conditions. The computer thereby determines the magnitude of the control member resistive forces required to produce the desired tactile feel and provides an output based thereon to an actuator which applies these forces to the control member.Type: GrantFiled: September 9, 1994Date of Patent: February 6, 1996Assignee: McDonnell Douglas CorporationInventor: Carlos P. Fernandez
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Patent number: 5488530Abstract: A system and method for protecting relay contacts from erosion utilizes a sensor which senses voltage change in a switch controlling a load relay. In response to operation of the switch, the sensor sends a current to a set of pass transistors which are connected in series to the load power source and the load to turn off the transistors thereby cutting off load current flow to the load. A delay element is connected in series between the sensor and the set of transistors which cuts off the current flow to the set of transistors for a period of time selected to enable the load relay contacts to fully close or fully open before conducting electrical current therethrough.Type: GrantFiled: April 22, 1993Date of Patent: January 30, 1996Assignee: McDonnell Douglas CorporationInventor: Hans E. De Jong
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Patent number: 5484277Abstract: A tool for fabricating fiber reinforced resin matrix composite structures having molded outside surfaces with intermittent molded inside surfaces e.g. aircraft skin with internal stiffeners. The tool employs a hybrid vacuum bag with soft portions in combination with rigid portions to produce the internal stiffeners. The stiffeners are supported and shaped during curing by pressurized elastomeric tubes, in lieu of mandrels, which can be easily removed when collapsed. The stiffeners and skin can be made from wet lay-ups or prepregs, formed in place or preformed, and in combinations where one part is precured or both parts are co-cured.Type: GrantFiled: December 26, 1989Date of Patent: January 16, 1996Assignee: McDonnell Douglas CorporationInventor: William E. Lindsay