| Patent Number |
Title Of Patent |
Date Issued |
| 4797065 |
Turbine blade retainer |
January 10, 1989 |
| Two-part turbine-blade retainer structures are disclosed for axial retention of each of a plurality of turbine blades to a rotor wheel, wherein radial retention is via fir-tree engagement of individual blade roots to the wheel. In a preferred embodiment, a male or bolt element of the |
| 4723894 |
Low-pressure air pump |
February 9, 1988 |
| A motor-driven continuously running system wherein multiple reciprocating bellows units are disposed in angularly spaced relation about the rotary axis of a swashplate. Each bellows is frame-referenced at one end, and its other end is axially driven by the swashplate. As the bellows unit |
| 4670754 |
Microwave tank-contents level measuring assembly with a phase controlled lens |
June 2, 1987 |
| High amplitude signals reflected back to the horn radiator-receptor in a microwave tank-contents measuring assembly from the interface between a microwave dielectric lens and the tank-contents-atmosphere, which reflected signals mimic returning ranging signals and interfere with dete |
| 4658651 |
Wheatstone bridge-type transducers with reduced thermal shift |
April 21, 1987 |
| Thermal shift in Wheatstone bridge-type transducers is reduced by providing a diaphragm of semiconductor material accepting formation of strain gages therein having a uniform temperature coefficient of resistance therethrough. That diaphragm is supported in a mechanically floating co |
| 4628375 |
Control systems for magnetic recording tapes |
December 9, 1986 |
| Methods and apparatus for recording information with a magnetic recording head advance magnetic recording tape from a first rotating tape coil into a second rotating tape coil and assure constant head-to-tape contact with constant tape tension independently of variations in coil diameter |
| 4624662 |
Catheter flushing systems |
November 25, 1986 |
| A catheter is flushed intermittently at a flushing flow rate higher than a seeping flow rate with the aid of a valve connected to a supply of flushing liquid. The valve has an operator of an elastic material providing an integral elastic sleeve about a valve stem, for biasing the ope |
| 4611601 |
Disposable transducer systems |
September 16, 1986 |
| Methods and systems for operating a disposable transducer or other disposable apparatus, which may be subject to sterilization inimical to that disposable apparatus, determine parameters required for operation of the disposable apparatus and provide a record of that determined parame |
| 4604787 |
Tool changer for manipulator arm |
August 12, 1986 |
| A tool changer for use with the manipulator arm of a robot or the like. A tool changer in which the manipulator arm is engaged with the end effector carrying the tool by a simple linear motion, and disengaged by a linear motion in the opposite direction, without requiring any separate co |
| 4592665 |
Temperature-controlled systems for non-thermal parameter measurements |
June 3, 1986 |
| Methods and apparatus for measuring a non-thermal physical parameter with temperature sensitive elements impart a predetermined temperature sensitive elements, while measuring the physical parameter therewith. The same termperature-sensitive elements are employed for effecting a meas |
| 4578954 |
Means for degassifying and superheating hotwell condensate in a recycling steam system |
April 1, 1986 |
| In a recycling steam system, a flow of waste steam is retrieved from the power cycle at a pressure in excess of condenser pressure and directs this waste-steam flow into a network of pipes vertically suspended in and distributed throughout the hotwell condensate, the pipes being so v |
| 4571803 |
Fabrication apparatus for cushioned line support |
February 25, 1986 |
| Partially formed metal straps are fed to a pick up point where a carriage assembly grips a strap and transports it across the path of a previously severed and loaded measured length of C-shape cushion material. The movement is coordinated with that of a clamping bar for the cushion to |
| 4566321 |
Microwave tank-contents level measuring assembly with lens-obturated wall-opening |
January 28, 1986 |
| A microwave tank-contents level measuring system is housed within a housing having an open end obturated by a hyperbolically curved convex-plano fluid impermeable solid dielectric lens providing a seal for the tank opening over which the housing is installed while collimating the outgoin |
| 4564831 |
Analog to digital converters for converting a plurality of different input signals |
January 14, 1986 |
| An analog to digital converter apparatus arranged to convert a plurality C (=4) of different input signals to digital representations thereof. The apparatus comprises a multiplexer arranged sequentially to couple each of the 4 input signals to a fast a-to-d converter (such as a successiv |
| 4552023 |
Transducer systems with overload protection |
November 12, 1985 |
| A transducer diaphragm overload protection system provides a core of insulating material for supporting a sensor and being movable relative to a deflectable diaphragm portion, and establishes a mechanical interconnection between that deflectable portion of the diaphragm and that mova |
| 4537219 |
Fluid-sampling valve for a hydraulic system |
August 27, 1985 |
| For the purpose of safely sampling fluid from a high pressure hydraulic system there is provided a valve assembly in which the passage of fluid through a fluid flow passage in a valve housing is controlled by a pressure regulated flow velocity limiting valve followed by an external l |
| 4537070 |
Magnetically responsive circuit-element module for liquid-level monitoring and probe therefrom |
August 27, 1985 |
| Components of a .pi.-network of resistors and magnetically responsive reed switches are encapsulated to form modules with keyed ends for end-to-end interlocking assembly. Conductive tabs of one module mate with those of the next module to establish electrical connection therebetween. Key |
| 4533217 |
Light gate assemblies, elements and manufacturing methods |
August 6, 1985 |
| Elongate light gate structures are composed of a plurality of individual chips of electrooptically active light gate material displaying field induced birefringence. The individual chips are provided in rectangular configuration. Each chip has a plurality of alternating electrodes and |
| 4511309 |
Vibration damped asymmetric rotor carrying liquid ring or rings |
April 16, 1985 |
| An asymmetric rotating rotor prevents or inhibits formation of waves in a liquid ring or rings. |
| 4510755 |
Demineralization of feed water in a steam system |
April 16, 1985 |
| The invention contemplates improvement and economy in demineralization of the total flow of recirculating water in a steam-generating system which includes a condenser for recovery and recirculation of feed water. This filter demineralizer operates on a relatively small fraction of the t |
| 4505551 |
Illumination and light gate utilization methods and apparatus |
March 19, 1985 |
| A method of selectively illuminating a surface, such as a light-sensitive recording medium or an information record, provides a slit traveling transversely to a longitudinal dimension thereof and images light from a source of spatially concentrated light through the slit onto the above |
| 4505157 |
Transducers with quick dome connect systems |
March 19, 1985 |
| Methods and apparatus for interconnecting a transducer body with a fluid-receiving transducer dome provide the transducer body with a radial shoulder, where an annular tightening member, rotatable relative to the transducer body, is also provided. An axial bias between the tightening |
| 4505148 |
Leak detection system |
March 19, 1985 |
| Leakage from a gasoline storage tank or other receptacle is detected by differentiating the output from a liquid-level monitoring transmitter with stepped voltage output and applying the differentiated transmitter signal through an amplifier to a latch controlled relay for activating an |
| 4502839 |
Vibration damping of rotor carrying liquid ring |
March 5, 1985 |
| A matrix in a rotating rotor prevents or inhibits formation of waves in a liquid ring. The matrix may be located in first and/or second channel sections defined by the rotor, liquid passing from the first to the second channel section; and a turbine may have a scoop removing liquid from |
| 4480469 |
Adjustable differential fluid level float indicator |
November 6, 1984 |
| The invention contemplates a float-operated electrical switching system with two fluid-level indications and with provision for mechanical adjustment of the difference in elevation between the two indicating points. The switches are magnetically actuated in accordance with proximity |
| 4478495 |
Light gate assemblies, elements and manufacturing methods |
October 23, 1984 |
| Elongate light gate structures are composed of a plurality of individual chips of electrooptically active light gate material displaying field induced birefringence. The individual chips are provided in rectangular configuration. Each chip has a plurality of alternating electrodes and |
| 4463567 |
Power production with two-phase expansion through vapor dome |
August 7, 1984 |
| In a system wherein a fluid exhibits a regressive vapor dome in a T-S diagram, the following are provided:(a) a two-phase nozzle receiving the fluid in pressurized and heated liquid state and expanding the received liquid into saturated or superheated vapor state, and(b) apparatus receiv |
| 4460465 |
Filter/demineralizer unit |
July 17, 1984 |
| The invention contemplates a self-contained unit wherein a continuous flow of contaminated liquid, such as steam-plant condensate recycled as feedwater, may be processed on an on-line basis through a replaceable demineralizing resin bed and through a replaceable filter cartridge. The |
| 4457333 |
Check valve with relief-valve feature |
July 3, 1984 |
| The invention contemplates a check-valve construction which exhibits substantially elevated resistance to onset of unidirectional flow (i.e., to valve opening), as compared with conventional constructions. This elevated resistance to valve-opening is achieved through use of a knuckle |
| 4457171 |
Liquid-level indicator |
July 3, 1984 |
| The present invention relates to an improved liquid-level indicator. The liquid-level indicator comprises an upstanding tube and a float arranged for vertical movement therein. This float is provided with a permanent magnet which is polarized in a horizontal plane and influences magn |
| 4441322 |
Multi-stage, wet steam turbine |
April 10, 1984 |
| A multi-stage, wet steam turbine employs working fluid, such as steam for example, in its two-phase region with vapor and liquid occurring simultaneously for at least part of the cycle, in particular the nozzle expansion. A smaller number of stages than usual is made possible, and the |
| 4437213 |
Means for tenon-forming a shroud to a turbine rotor |
March 20, 1984 |
| The invention contemplates a technique and machine for completing the assembly of a turbine-rotor stage by precision-peening blade tenons to secure shroud segments to successive blades. In the machine, a turbine-rotor assembly of multiple stages of blades on a rotor shaft is mounted |
| 4424776 |
Fuel supply for a diesel engine |
January 10, 1984 |
| The invention contemplates a continuously circulating pumped flow of diesel-engine fuel, involving thermodynamic coupling to the engine's coolant-circulation system (a) while the engine is operating and (b) involving selectively available thermodynamic coupling to an externally suppl |
| 4393998 |
Tube clamp |
July 19, 1983 |
| The invention contemplates tube-clamp structure wherein a split wear sleeve is applied to a metal tube with such resistance to displacement along the tube that displacement wear is accommodated essentially only via the lesser displacement resistance which characterizes a limited axial ra |
| 4382570 |
Draw band line support |
May 10, 1983 |
| The invention contemplates support structure for a conduit or the like wherein one of two cylindrically arcuate metal band parts incorporates mounting-bracket or foot structure and the other such part has articulated connection to one, and releasably tensed connection to the other, of th |
| 4362919 |
Method of welding using a covered tungsten electrode |
December 7, 1982 |
| A method of welding which utilizes a metal electrode core encased within a pre-sintered ceramic insulating sleeve. The method comprising, preplacing a welding wire in the welding kerf formed between the pieces to be welded, tacking the welding wire in place such that the wire abuts the s |
| 4351358 |
Check-valve construction |
September 28, 1982 |
| The invention contemplates a check-valve construction wherein a plurality of at least three generally triangular valve members are independently hinged to the respective base lines of a pyramidal seat configuration, the base lines being in a plane which essentially establishes the upstre |
| 4351301 |
Fuel supply for a diesel engine |
September 28, 1982 |
| The invention contemplates a continuously circulating pumped flow of diesel-engine fuel, involving thermodynamic coupling to the engine's coolant-circulation system (a) while the engine is operating and (b) involving selectively available thermodynamic coupling to an externally suppl |
| 4315436 |
Flow-rate transducer with electrical output |
February 16, 1982 |
| The invention in a preferred form contemplates a valve-like structure adapted for series-connection in a pipe or other conduit line and having a valve member which is caused, within the constraint of a rectilineal guide, to change its longitudinal position as a substantially linear f |
| 4312376 |
Pressure-sustaining valve |
January 26, 1982 |
| The invention contemplates a valve having particular application to the control of flow and pressure within a sanitary-sewer system which includes independently pumped feeders at elevations below an intervening region of greater elevation. The valve, located at the downstream side of the |
| 4305592 |
Gas seal bushing |
December 15, 1981 |
| An improved pressure seal assembly for rotary machinery. The assembly utilizes a buffer oil flowing through a seal ring surrounding the rotating shaft of the machinery. The seal ring includes a plurality of openings about its periphery to pass the oil through the ring to a number of |
| 4304136 |
Electrical transducer responsive to fluid flow |
December 8, 1981 |
| The invention in a preferred form contemplates a valve-like structure adapted for series-connection in a pipe or other conduit line and having a valve member which is caused, within the constraint of a rectilineal guide, to change its longitudinal position as a substantially linear f |
| 4284904 |
Encapsulated magnetically sensitive circuit elements for depth-indicating purposes or the like |
August 18, 1981 |
| The invention contemplates a unitary magnetically sensitive circuit element or network and a flexibly articulatable elongate assembly of a plurality of such elements or networks, with electrical interconnection of the same, such assembly being inherently suited to precision operation as |
| 4268953 |
Method of making an encapsulated magnetic-reed switch circuit element adapted for use in interco |
May 26, 1981 |
| The invention contemplates a unitary magnetically sensitive circuit element or network and a flexibly articulatable elongate assembly of a plurality of such elements or networks, with electrical interconnection of the same, such assembly being inherently suited to precision operation as |
| 4257444 |
Insert check valve or the like |
March 24, 1981 |
| The invention contemplates a particular body construction and assembly for a check valve or the like whereby the entire valve assembly may be readily installed as a unit within the bore of standard pipe or conduit, or a standard fitting therefor. A single circumferentially extending radi |
| 4249567 |
Check-valve construction |
February 10, 1981 |
| The invention contemplates a combined closure spring and upstop having particular application to check valves having multiple valve members. The invention is illustrated by one embodiment involving two valve members hinged on a single axis oriented diametrically of the valve-flow passage |
