| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Instrument for surveying the depth and volume of oil and brine in a static fluid column of an oil well | US09675923 | 2000-09-29 | US06427529B1 | 2002-08-06 | LeGrand A. Daly |
| An instrument and method for surveying the static fluid column of a cased oil well and measuring the volume of oil and brine in the fluid column is disclosed. The instrument uses the inherent differences in specific gravity between water, oil and brine to provide a more simple, convenient, portable and cost effective means for surveying oil columns in cased oil wells. The instrument includes a probe, and a modified fishing rig used to lower and raise the probe into the oil well. The fishing rig includes a handled rod, a reel with a numeric line counter, and length of fused braided fishing line. The numeric line counter visually indicates the length of line expelled from the reel's spool. The probe includes a tubular casing, which is filled with ordinary tap water. The probe is constructed and filled with water so that it has a specific gravity greater than oil and less than brine (approximately 1.0 g/cc). | ||||||
| 262 | Fluid level monitor field of the invention | US09939513 | 2001-08-24 | US20020029633A1 | 2002-03-14 | David Yekutiely; Barak Yekutiely |
| This invention discloses a fluid level monitor including a buoyant element suspended from a filament wound on a spool, a load sensor that senses a tensile force in the filament and a rotation sensor that senses the rotation of the spool around which the filament is wound, wherein the buoyant element is adapted to be initially at least partially submerged at an equilibrium position at an initial level of a fluid, thereby creating a nominal tensile force in the filament, wherein a change in the level of the fluid changes the tensile force in the filament, a positive change in the tensile force corresponding to a downward movement of the buoyant element and a negative change in the tensile force corresponding to an upward movement of the buoyant element, wherein the rotation of the spool corresponds to an amount of distance traveled by the buoyant element. | ||||||
| 263 | Septic tank sludge gauge | US09472030 | 1999-12-27 | US06274033B1 | 2001-08-14 | Glen Hudgin |
| A sludge gauge for measuring the depth of a sludge layer covering a bottom of a septic tank. The sludge gauge has a guide sleeve mountable through a septic tank cover and a probe, at least an upper end of which is slidably received in the guide sleeve. The probe has a base end distal an upper end. The density and base end configuration of the probe are selected to cause the probe to sink through a liquid layer in the septic tank until the base end settles on the sludge layer when the probe is released from a raised position. A cap is securable over an upper end of the guide sleeve and a collapsible connector extends between the cap and the probe for raising the probe into the raised position. An indicator is attached to the cap for indicating a height of the base end of the probe above the bottom of the septic tank thereby indicating sludge depth in the tank. | ||||||
| 264 | Ground water alert device | US784047 | 1997-01-17 | US5729206A | 1998-03-17 | Gary H. Divens |
| A ground water alert device includes an elongated water proof cable member which has a predetermined length and is inserted into a water level monitoring pipe of a well for a predetermined depth above a water table, a cable housing for delivering and collecting the cable member, a water sensor such as a probe which is electrically connected to a free end of the cable member for lowering into the monitoring pipe to the predetermined depth above the water table, a DC power source, a control circuitry electrically connected between the DC power source and the cable member for generating alert signals when the water sensor detects water, a depth indicator having a plurality of length scales uniformly provided along the cable member to indicate the length of the cable member from the water sensor, and a cable supporter for securing the cable member in place at a top end of the monitoring pipe so as to ensure the predetermined length of the cable member retaining in the monitoring pipe. The control circuitry comprises a function switch for electrically connecting with an alarm box by an alarm cable. The alarm box comprises at least an alarm signal device which would be activated to generate an alarm signal when the alarm box detects an electrical short while the water comes in contact with the water sensor or the water table rises to a predetermined safety level for any reason. | ||||||
| 265 | Modular magnetic scour monitoring device and method for using the same | US999616 | 1992-12-31 | US5532687A | 1996-07-02 | Jerry R. Richardson; Gerald R. Price; Everett V. Richardson; Peter F. Lagasse |
| A modular scour monitoring device which employs magnets located within a weighted descending collar is designed for placement about bridge piers, abutments and the like, such that the occurrence of scour causes descent of the collar. This descent is carefully monitored against the initial reference point using one of two systems: a magnetic detecting probe unit or a magnetic switch array. The probe unit utilizes a graduated cable with a magnet detector mounted at one end and a signalling device at the other. The switch array system employs electrical components which are selectively activated with the descent of the collar, permitting periodic readings of the arrays various electrical properties to reveal the new depth. A wide variety of accessory systems may be used in conjunction with the present invention to permit remote monitoring, visual, audible or other warning signals, and data storage and control. The modular design permits effortless storage and shipping of individual units, and more importantly construction of a monitoring unit without expensive construction equipment. | ||||||
| 266 | On-line fishing depth indicator with encapsulated components | US274064 | 1994-07-12 | US5469739A | 1995-11-28 | Michael P. McGuire |
| An on-line fishing depth indicator is adapted to be placed either in series or in parallel on a typical fishing line in combination with fishing bait. The indicator is adapted to sense and store the maximum depth of a bait during a trolling operation under controlled conditions. The indicator is activated by a remote activation switch by placing the indicator in the proximity of a non-invasive, remote activation element. The electronics, pressure transducer and visual readout are contained in a shielded, water-tight, encapsulated compartment within the unit. | ||||||
| 267 | Bin fill indicator | US4837 | 1993-01-19 | US5425329A | 1995-06-20 | Eugene B. Pollock |
| Fill indicator apparatus (10) for use in a feed bin (B) to visually indicate the level to which the bin is filled witch feed (F). A first visual indicator (12) includes a first flag (18) positioned externally of the bin and movable linearly along the side of the bin. The flag is movable to a reference position prior to the bin being filled, and the flag subsequently moves from one position to another as feed is taken from the bin. The subsequent positions of the flag represent the level of feed remaining in the bin. A second and separate visual indicator (14) includes a second flag (22) also positioned externally of the bin. This second flag is movable in response to an increasing level of feed in the bin, as it is being filled, to provide a visual indication of the level to which the bin is filled. This helps prevent spillage. | ||||||
| 268 | Salt level monitoring device for water softeners | US716205 | 1991-06-17 | US5147531A | 1992-09-15 | Stephen W. Dougal |
| A salt level monitoring device for water softeners including a weight for placement upon the salt mass; a drop line connected to the weight at one end and a sensor at the opposing, upper end; and a support member for supporting the sensor and drop line over the salt mass. Once the salt mass drops to a selected level, tension is placed upon the drop line and hence the sensor causing actuation thereof to send forth either an aural or visual signal. The weight has a mass less than the mass of the salt but greater than the mass of brine to prevent the weight from becoming embedded in the salt mass and to prevent false signals. A clip attaches the drop line to the weight for convenient adjustment of the drop line depth so that the salt level may be monitored at selected heights within the softener. | ||||||
| 269 | Liquid level gage system | US572661 | 1990-08-24 | US5136883A | 1992-08-11 | Louis J. Jannotta |
| A liquid level gage system is disclosed. This system includes a displacer secured to a cable and movable in response to winding or unwinding said cable around or from around a rotatable drum. The rotatable drum is coupled to a driven shaft, and a drive assembly is provided to drive the driven shaft. An indicator subsystem is included which provides an indication of a change in the apparent weight of the displacer as the displacer is moved across a liquid level. A strain gage is a key component of the indicator subsystem. In one embodiment, an assembly is provided for powering the indicator subsystem and transferring data from the indicator subsystem which involves two pair of coils. In another embodiment, the gage system can be effectively remotely programmed using light signals. | ||||||
| 270 | Motor assembly | US721919 | 1991-06-21 | US5104056A | 1992-04-14 | Louis J. Jannotta; Raymond C. Reip |
| A motor assembly useful for rotating a drum comprising: a hub adapted to be removably secured to the drum so that the drum rotates in response to rotation of the hub, the hub including a first outer surface adapted to face toward the drum and a second outer surface adapted to face away from the drum; a motor comprising a spring element having a first end adapted to be secured to the hub and being in aligned position relative to the hub to be wound around the hub between the first and second outer surfaces to apply a force to the hub which force urges the hub to rotate in one direction; and a housing adapted to hold the hub and the motor in aligned position substantially without frictional contact with the first and second outer surfaces of the hub. | ||||||
| 271 | Displacement servo gauge | US367026 | 1989-06-16 | US5012589A | 1991-05-07 | Michel Remion |
| A level gauge is used on a tank containing a liquid. The gauge utilizes a displacer suspended on a support wire or tape which is wound on a storage wheel. The storage wheel is balanced by a counterweight. Any change in liquid level results in an imbalance which causes a servo motor to energize and rotate the wheel to bring the counterweight and displacer back into balance. The change in level is determined by counting the steps of motor operation. The changes in level are determined using the relationship between length and steps of motor operation. The level gauge is operable to continually correct calculation to compensate for changes in wire length per turn of the spool. | ||||||
| 272 | Liquid-level detector | US370821 | 1989-06-23 | US4989452A | 1991-02-05 | Donald A. Toon; Douglas J. Belshaw |
| A probe is disclosed, for lowering into a water-well or other hole. The probe includes conductivity measuring electrodes, to distinguish between e.g., water and contaminants, such as gasoline. The probe also includes an optical sensing facility to locate the junction between air and liquid. The probe comprises a transparent plastic tube, mounted inside a housing. A beam of light from a LED passes obliquely through the plastic tube and onto a photo-transistor. When liquid is encountered in the well, the liquid enters the tube: the change in refractive index now directs the beam away from the photo-transistor. The optical and conductivity sensors are both actuated at the same depth. | ||||||
| 273 | Suspended-cable apparatus for measuring level of material in a storage vessel | US321098 | 1989-03-09 | US4910878A | 1990-03-27 | Phillip P. Fleckenstein; Randall J. Regentin; John T. Knepler |
| Apparatus for indicating level of material comprises a cable vertically suspended so as to contact and be surrounded by the material. The cable is suspended from a cam follower mechanism that engages a cam coupled to a motor for selectively introducing slack in the cable, such that the upper portion of the cable unsupported by the material engages and is suspended from a load cell. Circuitry is responsive to cable weight measured by the load cell for indicating level of the material. The motor comprises a rotary electric motor having a horizontal axis of rotation perpendicular to the vertical cable. The cam comprises a cam plate coupled to the motor to rotate about the motor axis and having an asymmetric periphery surrounding the axis of rotation. The cam follower mechanism comprises an arm pivotally mounted in fixed position adjacent to the cam plate and supporting a roller that engages the cam plate periphery. The cable is suspended from the pivot-remote end of the arm, so that weight of the cable and the roller arm hold the roller in contact with the cam plate periphery. The level-indicating circuitry is microprocessor-based and includes facility for indicating level over a 4-20 ma current range, with automatic output correction for changeds in circuit characters. | ||||||
| 274 | Fluid indicator for a containment vessel | US122049 | 1987-11-17 | US4880982A | 1989-11-14 | Harald Hoksaas |
| A fluid indicator for use in a containment vessel. A sensor body is movable by a drive relative to the vessel. An indicator automatically indicates the location of the sensor body relative to the vessel. A passage is in the body through which fluid from the vessel can be viewed and a light emitter is positioned in the body so as to direct a beam through the fluid. A light sensor also positioned in the body receives light after it passes through the fluid and produces a signal in response thereto. | ||||||
| 275 | Hall effect liquid level sensing apparatus and method | US91848 | 1987-09-01 | US4804944A | 1989-02-14 | James D. Golladay; Joseph M. Elder, Jr. |
| Disclosed herein is a Hall-effect liquid level sensing apparatus and method. The device may be mounted on a liquid storage tank and includes at least one float suspended within the tank and floating upon a hollow tube for guidance. The float carries a permanent magnet and a Hall-effect sensor may be reciprocated within the hollow tube to sense the location of the permanent magnet and thereby the location of the float. The device further includes a control device including an optical encoder which enables the device to sense the depth in the hollow tube to which the Hall-effect device has travelled when it senses the height of the permanent magnet. The invention may be used in conjunction with a plurality of floats to determine not only the liquid level but also the level between the liquid and a diverse liquid contained within the same container. In this embodiment, the invention may also be used in conjunction with a specific gravity measuring device so as to ensure that the pressure sensing orifice of the specific gravity measuring device is suspended within the liquid the specific gravity of which is desired to be measured. | ||||||
| 276 | Sensing probe for sludge detectors | US863294 | 1986-05-15 | US4719359A | 1988-01-12 | Thomas A. Rose |
| A sensing head for sludge detectors for use in effecting accurate sludge level detection in settling tanks, clarifiers, digesters, and the like, wherein the head that serves as the device probe comprises a cylindrical housing centered on its longitudinally extending axis and defining a reentrant indentation at one side of the head which extends toward the head other side beyond the longitudinal axis and defines a pair of opposed upper and lower housing walls and a gap therebetween, with such walls respectively having a light source and a light sensitive device, both separately lens covered and field replacable free of tool use, and in electrically connected relation with the detector cable of, for instance, portable detectors, to which cable the head is separately connected, for make-break light principal operation when the head is submerged in use; the head housing has upper and lower end caps sealingly secured thereto, an elastomeric bumper mounted on the lower end cap to protect the head lower end and sides from damage, a lens guard mounted in the housing gap to protect the head sensing mechanism, and a cooperating pressure nut, gland ring, grommet and strain relief washer arrangement at the head upper end for leak free strain relief securement of the head to and about the cable end to which the head is connected. | ||||||
| 277 | Apparatus for monitoring burden distribution in furnace | US751088 | 1985-07-02 | US4697453A | 1987-10-06 | Shigemi Murakawa; Seiji Taguchi; Makoto Nomura; Ryoji Takabe; Yoshiharu Iwashita; Masahiro Ishii |
| A burden distribution monitoring apparatus, according to the present invention, includes a hollow cylindrical sonde having an inner end radially movable within the internal space of a furnace, such as a shaft furnace. The sonde carries a burden layer depth sensor and/or a burden grain distribution sensor for radially shifting working ends of the sensors. With the foregoing construction, burden depth and/or grading of the burden can be monitored in a plurality of radial points in the furnace. | ||||||
| 278 | Level indicator for a liquid in a container | US786643 | 1985-10-11 | US4691113A | 1987-09-01 | Philippe Corvazier; Jacques Dousteyssier |
| Liquid level indicator in a tank of the type having a total-reflection optical sensor (1). The sensor is mobile vertically, so as to be able to be immersed or partially immersed in relation to the liquid level. The optical sensor (1) has an integrated light transmitter (DE) and receiver (PR) and is suspended by a non-extensible cable (5) wound onto an upper drum (6), the drum being driven upwards or downwards by a stepping motor (9) relative to the liquid level. The sensor (1) is connected with a wire (10) through a pully (13) ballasted with a weight (14) and fastened at its upper end so as to provide both the mechanical tension of the cable (5) and the electrical connection of the mobile sensor (1). The indicator also comprises a magnetic sensor (16) co-operating with a magnet (17), one of these two units being fixed in the top position and the others being mobile with the cable (5), so as to detect the arrival of the sensor (1) at a given higher level or maximum liquid level. | ||||||
| 279 | Measuring apparatus | US499518 | 1983-05-31 | US4601200A | 1986-07-22 | Eduardus Stoffelen |
| A measuring apparatus, including a measuring device; a measuring element secured at one of its ends to the measuring device; a measuring body secured on the free end of the measuring element; a pendulum capable of oscillating the measuring element; a positioning motor for actuating the measuring device; and a logic control unit actuating the pendulum. | ||||||
| 280 | Non-sparkable safety sample weight | US670498 | 1984-11-13 | US4572008A | 1986-02-25 | Kimberly H. Nielson; Lloyd Hudson |
| A combined weight and sampling device as described for use in grain elevators and similar storage facilities. The device comprises a weight element which is attached to the end of a measuring tape for being lowered to the top surface of the stored product for volume measurement purposes. Additionally, the device includes a hollow upper portion which will be filled with the measured material for sampling purposes. All of the structural elements of the device are formed of non-sparkable material, i.e. non-ferrous materials to eliminate the possibility of a spark induced explosion of grain dust, etc. | ||||||
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