Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 4899637 | Oscilatory hydraulic actuators with internal supply, return, and control passageways for multi-axis wrist actuator A rotary actuator includes a shaft rotatably mounted on a body, and a servovalve arranged to operate a vane motor for selectively rotating the shaft relative to the body. A portion of the shaft extends beyond the body. Supply and return passages are provi... | 02/13/1990 |
| 4872874 | Method and apparatus for transarterial aortic graft insertion and implantation A method for implanting a tubular graft within a preselected blood vessel utilizes apparatus embodiments for inserting the graft endwise and axially through the blood vessel into place therein and for operatively securing the graft to the inside wall of t... | 10/10/1989 |
| 4867201 | Parallel-motion dual-diaphragm valve A valve (10) has a body (11) provided with two separate but parallel flow passages therethrough. A first diaphragm assembly (14) is held between a lower bonnet (12) and the body, and is movable toward and away from a seat (48). A second diaphragm assembly... | 09/19/1989 |
| 4865317 | Push-pull exercise device A push-pull exercise device has a pair of parallel first rods and a pair of parallel second rods. The second rods are arranged to straddle the first rods. The two pairs of rods are longitudinally overlapped. A first member is mounted fast to the overlappe... | 09/12/1989 |
| 4856705 | Automatically-operating bottom structure An automatically-operated bottom structure for an eight-sided container includes a pair of bottom flaps (66,69) pivotally connected to pair of opposed first panels (13,18), and band pivotally connected to an opposed pair of second panels (11,15) arranged ... | 08/15/1989 |
| 4851001 | Prosthetic valve for a blood vein and an associated method of implantation of the valve A prosthetic valve and an associated method of implanting the valve within a blood vein utilize a valve support ring and a pair of leaflet members pivotally connected to the ring. The valve is positionable within a radial plane of the blood vessel for per... | 07/25/1989 |
| 4840228 | Heat exchanger having metal wire screens, and method of making stack of screens therefor A heat exchanger comprising a stack of metal cloth or wire screens partitioned by sealant material into different regions through which separate fluids flow to exchange heat by way of conduction through the metal wires.... | 06/20/1989 |
| 4840111 | Energy-conserving regenerative-flow valves for hydraulic servomotors An improved energy-conserving servoactuator has at least one valve operatively associated with a double-acting fluid-powered actuator. When a load is applied to the actuator, the pressure in one actuator chamber will be greater than in the other. If the l... | 06/20/1989 |
| 4827981 | Fail-fixed servovalve with controlled hard-over leakage The second stage (10) of a fail-fixed flow-control servovalve has a five-lobed valve spool (12) slidably mounted in a body bore (19). At null, the end lobes (41,45) are substantially zero-lapped with respect to supply pressure slots (22,26), the middle lo... | 05/09/1989 |
| 4825819 | Hypergolic/catalytic actuator A fluid-powered actuator has a piston slidably mounted in a cylinder. The piston subdivides the cylinder into first and second end chambers. A plurality of solenoid valves are arranged to selectively inject fuel and oxidizer into either chamber, or to inj... | 05/02/1989 |
| 4825894 | Piezoelectric torque motor A piezoelectric torque motor (10) includes a body (11), a pair of opposed nozzle assemblies (12,13) mounted on the body, a pair of piezoelectric actuators (14,15) extending upwardly away from the body, and a lever assembly (16) having an upper portion (95... | 05/02/1989 |
| 4799375 | Instrumented test hammer An instrumented test hammer for use in vibrationally exciting a test object includes a head assembly having an impact tip and a transducer operatively arranged to sense the force of an impact between the tip and object and to convert such sensed force int... | 01/24/1989 |
| 4796664 | Two-axis force motor A two-axis force motor (10) has an armature (12) mounted within a body (11) for omni-directional pivotal movement relative to the body. The motor has an electrical section for causing the armature to pivot selectively in either or both of two mutually-per... | 01/10/1989 |
| 4794619 | Optical fiber temperature sensor A temperature measuring device comprises an optical temperature probe (20) and a control module (21). Thermal emission from a recess (28a, 28b) in the tip end portion (23) of an optical fiber (22) is transmitted to the remote end (26) of the fiber for det... | 12/27/1988 |
| 4776610 | Short-stroke position transducer for a vehicle suspension system A vehicle suspension system (10) has a spring (11) operatively arranged to act between sprung (15) and unsprung (13) masses. The coil (24) of an LVDT (22) is mounted on the sprung mass. The core (23) of the LVDT is connected to an intermediate portion (25... | 10/11/1988 |
| 4771816 | Plastic hinged and weatherstripped metal overhead door Overhead door construction for a truck van or the like including metal door sections pivotally connected by the rigid part of a dual durometer plastic hinge member having a flexible part for sealing the joint between adjacent door sections when the door i... | 09/20/1988 |
| 4766921 | Method of operating a PWM solenoid valve The invention provides an improved method of operating a pulse-width-modulated solenoid valve so as to improve the proportionality of the flow-to-command pulse width characteristics of the valve. A train of command pulses (P1, P2, . ... | 08/30/1988 |
| 4767956 | Transducer clamp An improved clamping mechanism is used to mount a transducer (11) on a motor housing (12). The motor housing has an inclined surface (18). The clamp (13) has one portion (32) engaging the inclined housing surface, and has another portion (30) engaging the... | 08/30/1988 |
| 4765587 | Pulse-width-modulated solenoid valve A pulse-width-modulated solenoid valve has a body provided with an elongated chamber. The body has inlet and outlet openings communicating with the chamber, and has a seat surrounding the inlet opening and arranged to face into the chamber. An armature is... | 08/23/1988 |
| 4747299 | Method of testing a package seal A method of testing the integrity of a package seal (14) provided between a container portion (11) and a lid portion (12), includes the steps of: initially reducing the pressure acting on the outer surface of the container portion to cause the lid portion... | 05/31/1988 |
| 4746094 | Pulse-width-modulated solenoid valve A pulse-width-modulated solenoid valve has a body provided with an elongated chamber. The body has inlet and outlet openings communicating with the chamber, and has a seat surrounding the inlet opening and arranged to face into the chamber. An armature is... | 05/24/1988 |
| 4744922 | Neutron-absorbing material and method of making same A neutron-absorbing material is formed by a process which includes the steps of: mixing an absorptive material having a high thermal neutron capture cross-section (e.g., B4 C), a neutron-moderating material (e.g., graphite) and a binder (e.g., ... | 05/17/1988 |
| 4733416 | Push-button operating mechanism for a water closet Disclosed is a push button apparatus for operating a flush valve or the like of a water closet, comprising button actuator means including a button and housing, said housing having a shank for passing through an opening in a water closet tank wall, the bu... | 03/29/1988 |
| 4722559 | Spray hose assembly A spray hose comprises a plurality of ducts extending through the length thereof, and a plurality of spray slots which are distributed over the lengths of the respective ducts and which open under pressure to provide a spray from the hose. Mounted at the ... | 02/02/1988 |
| 4715215 | Method and apparatus for testing the fluid-tight sealed integrity of a hermetically-sealed package in a rapidly-stabilized environment A leak detector is adapted to test the fluid-tight sealed integrity of a hermetically-sealed package having a movable wall portion. An enclosure surrounds a package-to-be-tested, and the space within the enclosure is evacuated by a vacuum pump. As the pre... | 12/29/1987 |
| 4693798 | Method of treating contaminant ions in an aqueous medium with electrolytically generated ferrous ions, and apparatus therefor An aqueous medium containing contaminant ions such as hexavalent chromium ions is treated by introducing electrolytically generated ferrous ions which are preferably generated in water acidified to a low enough pH to prevent the formation of flocculent ma... | 09/15/1987 |
| 4691621 | Piston-and-cylinder arrangement with radially-yieldable piston head An improved piston-and-cylinder arrangement has a pressure-balanced piston head mounted on an actuator rod. The piston head is mounted for axial movement with the rod, and for radial movement relative thereto. Three annular ring-type seals are provided be... | 09/08/1987 |
| 4687293 | Metal-encased light conductor A metal-encased light conductor having a continuous pressure boundary seal capable of use to transmit light signals in an environment having a pressure up to about 5000 psi based on a sealing length of a minimum of 6 inches and a temperature falling in th... | 08/18/1987 |
| 4685813 | Hydrostatic bearing A hydrostatic bearing is provided between two relatively movable members. Opposing sensing and bearing pads extend into either member and face the other member. These pads communicate with one another. An inlet orifice is defined between the members and e... | 08/11/1987 |
| 4681135 | Time-delay valve A time-delay valve is adapted to be used in association with a source of pressurized first fluid, such as CO2. When CO2 is admitted to the inlet of the time-delay valve, an entrapped liquid is pressurized to a known level. Such press... | 07/21/1987 |
| 4669413 | Transfer chamber and method of operating same An improved transfer chamber for a space vehicle has an enclosure mounted on the hull of a spacecraft, and is provided with inner and outer doors. Two bladders are placed within this transfer chamber, and are selectively movable toward and away from one a... | 06/02/1987 |
| 4664149 | Automatically-operated self-sealing zero-spillage fluid coupling device A fluid coupling device have separable male and female sections. Each section has a ball valve mounted for rotational and axial movement relative to a housing. When the sections are joined together, each ball valve rotates automatically to a flow-permitti... | 05/12/1987 |
| 4641072 | Electro-mechanical actuator An electro-mechanical actuator has a ferrous alloy armature movably mounted within a body chamber. Two axially-spaced permanent magnets are arranged radially inwardly of the chamber and partially define the chamber at the ends thereof. A coil surrounds th... | 02/03/1987 |
| 4631430 | Linear force motor A linear force motor has an elongated body provided with an annular chamber therewithin. An armature is arranged within the chamber for axial movement relative thereto. Two axially-spaced permanent magnets, with their like poles arranged to face one anoth... | 12/23/1986 |
| 4627598 | Coupling device with eccentrically-mounted rotary valve element A coupling device has a male section selectively insertable into a female section. At least one of the sections has a ball valve rotatably mounted within a housing. When one section is inserted into the other, the ball valve is constrained to rotate about... | 12/09/1986 |
| 4618198 | Connector for sealingly joining the ends of a pair of electrical cables A connector for sealingly joining the ends of a pair of electrical cables which provides a reusable quick-disconnect metal-to-metal sealing joint. Without the use of elastomeric seals. The connector has a male housing encircling the marginal end portion o... | 10/21/1986 |
| 4607911 | Connector for an optical fiber having a stationary clamp engaged and operated by a rotatable member A way of terminating an optical fiber is provided by collet-chuck type means which do not involve stripping, crimping or cementing.... | 08/26/1986 |
| 4597322 | Seal assemblies A seal assembly is arranged to contain leakage of hydraulic fluid passing between a wall opening and a penetrant rod portion passing through the opening. The seal assembly includes a sliding-seal member mounted on a portion of the rod for sliding movement... | 07/01/1986 |
| 4593970 | Fiber optic feedthrough module, and method of making same A fiber optic feedthrough module which comprises a metal sleeve, a fiber optic element extending through the sleeve relation thereto, and a tandem series of centrally-apertured mating annular sealant bodies of thermoplastic material surrounding the fiber ... | 06/10/1986 |
| 4569805 | Apparatus for the submerged introduction of a fluid into a body of liquid A fluid supply pipe has uniformly spaced diffuser location holes arranged in a line along its length at each of which a saddle is secured to the pipe which includes changeable means for controlling the desired flowrate of fluid from the pipe to a diffuser... | 02/11/1986 |
