Resumes
Resumes
Jacob Chass Phones & Addresses
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7025 Yellowstone Blvd, Forest Hills, NY 11375 (718) 544-6440
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7025 Yellowstone Blvd #24D, Forest Hills, NY 11375 (718) 544-6440
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7025 Yellowstone Blvd APT 1H, Forest Hills, NY 11375 (718) 544-6440
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Flushing, NY
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New York, NY
Work
Position:
Professional/Technical
Education
Degree:
Associate degree or higher
Emails
Publications
Us Patents
Hall Effect Sensor Of Displacement Of Magnetic Core
View pageUS Patent:
6356072, Mar 12, 2002
Filed:
Sep 24, 1999
Appl. No.:
09/404732
Inventors:
Jacob Chass - Forest Hills NY, 11375
International Classification:
G01B 714
US Classification:
3242072, 32420724, 32420726
Abstract:
A sensor for measuring linear displacement has a core of magnetic material disposed for movement within a bobbin about which a coil of insulated, electrically conductive wire is wound. At least one Hall effect device is disposed about the coil. The sensor is contained with a magnetic housing. When the coil is excited by a DC power source, the direction of magnetic flux flowing through the Hall effect device is dependent upon the position of the core.
Ferrofluidic, Electrical Power Generator
View pageUS Patent:
6489694, Dec 3, 2002
Filed:
Jan 22, 2002
Appl. No.:
10/051950
Inventors:
Jacob Chass - Forest Hills NY, 11375
International Classification:
H02K 4400
US Classification:
310 11, 310152
Abstract:
A ferrofluidic electrical power generator installed within an agitating object, such as the interior of a vehicular tire generates electrical current in an electrical winding wound about an elongated permanent magnet. The winding is surrounded by sealed container made of non-magnetic material, partially filled with magnetized ferrofluid. The permanent magnet and the magnetized ferrofluid form a magnetic circuit surrounded by the electrical winding. Rotation and horizontal velocity of the tire will agitate the magnetized ferrofluid within the sealed container causing cyclic variations in the distribution of the magnetized ferrofluid causing variation in the magnetic flux density, thus, induction in the electrical winding.
Ferrofluidic, Electromagnetic Power Generator
View pageUS Patent:
6504271, Jan 7, 2003
Filed:
Mar 5, 2001
Appl. No.:
09/798066
Inventors:
Jacob Chass - Forest Hills NY, 11375
International Classification:
G01P 1511
US Classification:
310 11, 7315409
Abstract:
A ferrofluidic electromagnetic power generator installed within a rotating object, such as the interior of a vehicular tire generates electric current in an electrical coil wound about an elongated, hermetically sealed housing made of non-magnetic material, partially filled with magnetized ferrofluid. A permanent magnet and two magnetic pole pieces enclosing the housing and the coil in conjunction with the ferrofluid form a magnetic circuit. Rotation and horizontal velocity of the tire will propel the magnetized ferrofluid within the sealed housing causing induction in the electrical coil.
Ferrofluidic, Electromagnetic Power Supply
View pageUS Patent:
6628017, Sep 30, 2003
Filed:
Aug 6, 2002
Appl. No.:
10/213008
Inventors:
Jacob Chass - Forest Hills NY, 11375
International Classification:
G01P 1511
US Classification:
310 11, 7351408
Abstract:
A ferrofluidic electromagnetic power supply firmly attached to an agitating object, such as the interior of a vehicular tire generates electric current in an electrical coil deposited between and firmly attached to an hermetically sealed housing made of non-magnetic material partially filled with ferrofluid and a permanent magnet axially polarized. The ferrofluid and the permanent magnet form a magnetic circuit extending from the ferrofluid through the coil to the permanent magnet and back to the ferrofluid. Agitation of the power supply will cause dislocation of the magnetized ferrofluid within the sealed housing causing induction in the electrical coil.
Linear Differential Transformer With Constant Amplitude And Variable Phase Output
View pageUS Patent:
44370199, Mar 13, 1984
Filed:
Feb 7, 1983
Appl. No.:
6/464754
Inventors:
Jacob Chass - Rego Park NY
Assignee:
Pickering & Company, Inc. - Plainview NY
International Classification:
H02J 300
H01F 7106
H01F 7106
US Classification:
307 83
Abstract:
A differential transformer is provided comprising an elongated secondary winding of uniform turn density. First and second transformer primary windings are wound about the secondary winding. The primary windings lie generally in parallel spaced apart planes which cut the axis of the secondary winding at an angle other than 90. degree. A core of magnetic material is movable linearly along a path parallel to the secondary winding axis and serves to couple the primary and secondary windings. The primary windings are connected to AC sources which are 90. degree. out of phase with each other.
Hall Effect, Shaft Angular Position Sensor With Asymmetrical Rotor
View pageUS Patent:
62885359, Sep 11, 2001
Filed:
Jul 6, 1999
Appl. No.:
9/347913
Inventors:
Jacob Chass - Forest Hills NY
International Classification:
G01B 730
G01R 3307
G01R 3307
US Classification:
3242072
Abstract:
A shaft angular position sensor having a DC output voltage has a magnetic housing into which are mounted a Hall effect device, a bobbin-winding assembly and a rotor. The bobbin-winding assembly is a hollow cylindrical coil form made of non-magnetic material about which are wound two excitation coils connected in series opposition. An elongated magnetic core is disposed for rotation within the hollow bobbin. The core is an axial section of a magnetic cylinder which serves to direct two opposing DC magnetic flux flows through the Hall effect device. The output voltage generated by the Hall effect device is indicative of the angular position of the magnetic core relative to the bobbin winding assembly when a DC voltage is applied to the coils.
Multiple Rotary Variable Differential Transformer On Common Shaft With Leakage Flux Compensation
View pageUS Patent:
43452302, Aug 17, 1982
Filed:
Feb 2, 1981
Appl. No.:
6/230337
Inventors:
Jacob Chass - Rego Park NY
Assignee:
Pickering & Company, Inc. - Plainview NY
International Classification:
H01F 2106
US Classification:
336135
Abstract:
A rotary variable differential transformer is provided comprising a pair of RVDT units disposed along a common shaft. A third RVDT is positioned along the shaft between the two units. The third RVDT comprises two pairs of secondary coils each pair being connected in series opposition. One of the coil pairs is connected to the secondary coils of one of the RVDT units and the other pair is connected to the secondary coils of the other RVDT unit. The third RVDT unit does not contain a primary and its secondary coils are excited only by the leakage flux from the other units.
Multiple Hall Effect Sensor Of Magnetic Core Displacement
View pageUS Patent:
63104725, Oct 30, 2001
Filed:
Apr 13, 2000
Appl. No.:
9/549312
Inventors:
Jacob Chass - Forest Hills NY
International Classification:
G01B 714
US Classification:
3242072
Abstract:
A sensor for measuring linear displacement has a core of magnetic material disposed for movement within a bobbin about which at least one coil of insulated, electrically conductive wire is wound. At least one Hall effect device is included in the sensor. The sensor is contained with a magnetic shell. When the coil is excited by a DC power source, the magnitude or direction of magnetic flux flowing through Hall effect device is dependent upon the position of the core.