Class 33/720 - Line with weight

Subclass of Class 33 - Geometrical instruments
Definition: Subject matter under 713 having a weight or bob attached
No. of patents: 30
Last issue date: 04/08/2008

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Number	Title	Issue Date
7354768	Volume-differential assay using hydrophilic gel Systems and methods for measuring the moisture and sediment content of a petroleum sample. In one embodiment, a sample to be tested is collected in a field bottle. The sample from the field bottle is then transferred from the field bottle, and into and through a mea...	04/08/2008
7219441	Phreatic surface measurer terminal A terminal, for use with a phreatic surface measurer having a tape measure with at least one sensor at one end of the tape measure, includes a flexible protection element that substantially surrounds the tape measure, and a coupler between the flexible protection el...	05/22/2007
7066024	Float adapted to track an interface between two liquids of differing density A float adapted to track an interface between two liquids of differing density, includes a hollow buoyant body having an interior cavity adapted to retain liquid. At least one upper access opening is provided in the body, which is adapted to permit filling of the in...	06/27/2006
6957499	Depthometer A depthometer for measuring a length of an elongate line. A main wheel is mounted upon a main body component and is in communication with a registering mechanism. Line guides are mounted upon a lower body component. An inner handle connected to the main body compone...	10/25/2005
6883246	Freeboard measuring device A freeboard-measuring device has a central housing with streamlined fins extending along sides and bottom of the housing to prevent uplifting of the housing when lowered into water and minimize resistance to wind and current. The housing defines a chamber with a bot...	04/26/2005
6490808	Topographic measuring device The invention concerns a device for measuring the position of a lower positioning reference system with respect to an upper positioning reference system located above the former, comprising a pendulum including a pendulous mass and a metrological wire fix...	12/10/2002
6481110	Plumb bob A plumb bob which may be used in combination with a measuring tape for gauging the vertical height of a liquid, such as oil, stored in a tank. The plumb bob comprises a weight which is cushioned at its lower end by a elastomeric bumper. The bumper, which ...	11/19/2002
5533392	System and method for sensing material level within a container A system for sensing the surface level of flowable material within a container, comprises a drop weight secured to a cable through a pulley for being disposed above the material and brought into contact with the surface level of the material. The cable is...	07/09/1996
5479724	Method and apparatus for scour depth measurement A method and apparatus for measuring scour depth in a waterway bed is described. The apparatus utilizes magnetic attraction between a weight resting on the waterway bed and a magnetic probe within a guide chamber to which the weight is attached. Magnetic ...	01/02/1996
5351531	Depth measurement of slickline A depth measuring system for a slickline utilized in a well bore operation where the slickline is in a non-slip relationship with the circumference of a calibrated measuring wheel and the revolutions of the wheel are utilized to provide a first length mea...	10/04/1994
5243860	Liquid level measurement The invention relates to apparatus (1) for monitoring the level of a liquid within a vessel (3). The apparatus comprises a surface following sensing head (5) adapted to follow the surface (7) of the liquid. A gauging head (9) is mounted outside the vessel...	09/14/1993
5058288	Plumb bob device for determining the bed height of bulk material in a shaft furnace The present invention pertains to a plumb bob device for determining the bed height of bulk material in a shaft furnace. The winding drum 1 for unwidning and rewinding a cable 5 or a chain with a plumb bob 6 suspended at its end is driven by a hydraulic m...	10/22/1991
5012589	Displacement servo gauge 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...	05/07/1991
4910878	Suspended-cable apparatus for measuring level of material in a storage vessel 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 sl...	03/27/1990
4907347	Swivel head counter A swivel head counter for accurately measuring line in tension, such as a downrigger line passing over a pulley and the pulley driving a compact gear train. The gear train drives a counter wheel or knob so that actual depth or extension of downrigger line...	03/13/1990
4887361	Streamlined freeboard measuring device The invention relates to a freeboard measuring device which comprises an elongated housing having a rectangular cross-section form, a central part of the device body. A pair of fins fixedly connected to the housing on each of its sides extend substantiall...	12/19/1989
4875295	Drop-weight material level indicator A drop-weight material level indicator in which a spool is mounted above material whose level is to be sensed and is coupled to a motor for selectively unwinding and winding a drop line wound on the spool. The drop line is trained over an idler pulley car...	10/24/1989
4712305	Freeboard measuring device A device is disclosed for measuring the change in the freeboard of a barge, indicating a varying amount of cargo within the barge. An oil gauging tape is used to lower the device which comprises a vertical pipe transversed by a horizontal bar with an aper...	12/15/1987
4635478	Device for registration of level, transition zones and temperature A manually operable measurement apparatus for measuring level, temperature and transition zone between two different liquids. The measurement is carried out by letting a probe through a sluice and valve means into a tank. The probe is combined in one unit...	01/13/1987
4624055	Consecutive reading gauging bob A tank gauging bob is adapted to be releasably attached to a measuring tape for measuring the contents of a storage compartment. The bob comprises a generally cylindrical vertical elongated body having a measuring tape receiving lug and an extended portio...	11/25/1986
4620371	Water-depth measuring apparatus for a double bearing type fishing reel A water-depth measuring apparatus for a double bearing type fishing reel including a reel body in which a spool carrying a fishing line is rotatably supported. At least one element is provided on the spool for rotation therewith. A case which is separate ...	11/04/1986
4586286	Outrigger lure depth control A lure depth control, used primarily for trolling, for an outrigger of the type having a base, a boom including a fixed member engaging the base and a rotatable member carrying a pulley, and a reel carrying a cable strung over the pulley. The lure depth c...	05/06/1986
4451986	Ullage tape winder An ullage gauge for directly and accurately measuring the ullage of a cargo tank of a vessel such as an oil tanker without the necessity of opening the hatch. The gauge is comprised of a calibrated ullage tape which is supplied from a winder reel position...	06/05/1984
4332086	Catalyst bed level measuring device A device for measuring the level of a bed of finely divided solid such as a catalyst or the like. It can make the level measurement both near the center and near the periphery of the bed from a relatively small opening in the top of a container for the be...	06/01/1982
4318227	Device for determining physical qualities of pressurized container contents A device is provided for determining the physical qualities, such as amount, ullage, temperature, etc., of liquids, through an operable service hatch, of such tanks containing the liquid and vapors of the liquid and/or an inert gas above the liquid withou...	03/09/1982
4279078	Fluid presence detector A fluid level indicator circuit is used in cooperation with a probe attached to a long wire where the probe has first and second electrodes for contacting the surface of the fluid and leads communicating to the indicator circuit. The water level indicator...	07/21/1981
4226023	Portable device for determining physical qualities of pressurized container contents A portable device is provided for determining the physical qualities, such as amount, ullage, temperature, etc., of liquids in closed tanks containing the liquid and vapors of the liquid and/or an inert gas above the liquid without lowering the pressure o...	10/07/1980
4192187	Float controlled volumetric gauge Apparatus for measuring changes in volumetric content of a storage tank having a predetermined relationship between changes in liquid level and the change in volumetric content. The apparatus includes a tape windable onto and off a reel co-acting with a c...	03/11/1980
4154105	Orientable temperature indicator device A temperature indicator device, used for continuously monitoring the condition of lubricating oil of motorcycles and recreation vehicles, comprises a temperature sensor stem having a calibrated readout gauge, which gauge is orientable about the stem axis ...	05/15/1979
3942379	Floating wave stilling chamber for liquid level indicator A gage mechanism for determining the level of a liquid, comprising a measuring means joined to a liquid level indicating device, a floating stilling chamber circumscribing the periphery of the liquid level indicating device, said stilling chamber having w...	03/09/1976

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Class 33/720 - Line with weight