With Magnetic Or Electromagnetically Actuated Delay Means Patents (Class 335/63)
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Patent number: 9144647Abstract: The present invention relates to a time delay indicator (1) for an injection device for administering a drug into the body of a subject user wherein the time delay indicator is configured for indicating after administration that a dose of the drug actually has been administered and for maintaining this indication until lapse of a pre-determined time interval. The time delay indicator is based on a magnetic liquid (6) being physically moved by a magnet (10).Type: GrantFiled: November 15, 2012Date of Patent: September 29, 2015Assignee: Novo Nordisk A/SInventor: Ebbe Kiilerich
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Publication number: 20150145619Abstract: An electrical contactor has a first terminal having a fixed member with at least one fixed electrical contact, a second terminal, and at least one movable electrical contact in electrical communication with the second terminal. A dual-coil actuator is also provided and has a first drive coil drivable to open and close the movable and fixed electrical contacts, and a second non-drive coil feedback connected to induce a reverse flux to temper and stabilize a net flux. Control of a delay time of the opening and closing electrical contacts is thus possible, so as to be at or adjacent to a subsequent or next zero-crossing of an associated AC load current waveform.Type: ApplicationFiled: November 26, 2014Publication date: May 28, 2015Inventor: Richard Anthony Connell
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Publication number: 20150145620Abstract: An electrical contactor is provided comprising a first terminal having a fixed member with at least one fixed electrical contact; a second terminal; at least one electrically-conductive movable arm in electrical communication with the second terminal and having a movable electrical contact thereon; and an AC dual-coil actuator having a first drive coil drivable to open and close the movable and fixed electrical contacts, and a second non-drive coil feedback connected to induce a reverse flux to temper and stabilize a net flux, thereby enabling control of a delay time of the opening and closing electrical contacts so as to be at or adjacent to a zero-crossing of an associated AC load currentType: ApplicationFiled: November 26, 2014Publication date: May 28, 2015Inventor: Richard Anthony Connell
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Patent number: 8576028Abstract: A switch device includes: a switch manipulation portion that is manipulated between an ON position and an OFF position; a detecting unit that detects which position the switch manipulation portion is positioned at, the ON position or the OFF position; a first mechanism that, when the switch manipulation portion is manipulated from the OFF position to the ON position, causes a first electrical contact point to enter an ON state; and a second mechanism that, when the switch manipulation portion is manipulated to the OFF position, causes the switch manipulation portion to enter an OFF state and to maintain the ON state of the first electrical contact point, and changes the state of the first electrical contact point to the OFF state by making an electrical signal be in an OFF state, an ON state, and an OFF state in this order.Type: GrantFiled: January 25, 2011Date of Patent: November 5, 2013Assignee: Ricoh Company, LimitedInventor: Atsuki Iwata
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Patent number: 8564389Abstract: In one aspect, the present invention provides an electromagnetic circuit interrupter for use in a high voltage direct current (DC) aircraft power distribution system. The electromagnetic circuit interrupter comprises a contact mechanism operable to separate first and second electrical contacts by a first predetermined distance d1 for a predetermined time ? so as to sustain an arc when the contact mechanism is opened. The contact mechanism is further operable to separate the first and second electrical contacts by a second predetermined distance d2 after the predetermined time ? so as to extinguish the arc. The first predetermined distance d1 is less than said second predetermined distance d2. By deliberately sustaining the arc for a relatively long period of time, this aspect of the present invention is particularly useful for extending the operational lifetime of the contacts and thereby of the electromagnetic circuit interrupter itself.Type: GrantFiled: May 4, 2011Date of Patent: October 22, 2013Assignee: GE Aviation Systems LimitedInventor: Adrian Shipley
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Publication number: 20110181380Abstract: A switch device includes: a switch manipulation portion that is manipulated between an ON position and an OFF position; a detecting unit that detects which position the switch manipulation portion is positioned at, the ON position or the OFF position; a first mechanism that, when the switch manipulation portion is manipulated from the OFF position to the ON position, causes a first electrical contact point to enter an ON state; and a second mechanism that, when the switch manipulation portion is manipulated to the OFF position, causes the switch manipulation portion to enter an OFF state and to maintain the ON state of the first electrical contact point, and changes the state of the first electrical contact point to the OFF state by making an electrical signal be in an OFF state, an ON state, and an OFF state in this order.Type: ApplicationFiled: January 25, 2011Publication date: July 28, 2011Inventor: Atsuki IWATA
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Patent number: 7663457Abstract: Magnetically latching and releasing a voice coil actuator for controlling electrical switchgear. The voice coil actuator includes a voice coil magnet disposed on a common longitudinal axis with respect to a voice coil assembly. A coil of the voice coil assembly exerts a magnetic force on the voice coil assembly, thrusting the voice coil assembly towards the voice coil magnet. At least one pair of latching members mounted to the voice coil assembly creates a permanent magnet circuit between the latching members and the voice coil magnet. The permanent magnet circuit maintains the position of the voice coil assembly relative to the voice coil magnet, even when power to the coil is removed. This latch can be released by applying a current in the coil or by applying an external, physical force to a member coupled to the voice coil assembly.Type: GrantFiled: May 31, 2007Date of Patent: February 16, 2010Assignee: Cooper Technologies CompanyInventors: Bela Peter Szeifert, Michael Peter Dunk
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Patent number: 7623010Abstract: An electrical switch for connecting and breaking a circuit including a connecting and breaking mechanism for connecting and breaking the circuit provided with at least a set of movable contacts and stationary contacts; a electromagnetism drive mechanism for controlling the contacts to be actuated so as to realize closed circuit; a housing for accommodating the movable contact and stationary contact; an arc-extinguishing mechanism disposed in the housing and corresponded to the movable and stationary contact; a case connected to a base for accommodating the electromagnetism drive mechanism; a bedplate associated with the case; and a holding mechanism disposed on the bedplate for holding the contacts to connect the circuit, the electromagnetic holding mechanism is electromagnetic and has a set of electromagnetic attracting mechanism in which the movable iron core is made to be a pothook or a baffle mechanism, the movable iron core is attracted so that the pothook or baffle keeps the switch closed by means of hiType: GrantFiled: May 28, 2004Date of Patent: November 24, 2009Inventor: Ping Liu
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Patent number: 7557682Abstract: A solenoid assembly for a circuit breaker having a clapper with an increased mass is provided. The mass, preferably at least one non-ferrous slug, increases the mass of the clapper so that the solenoid response time is slowed. That is, the added mass creates an inertial delay that slows the solenoid clapper as the clapper moves between the first position and the second position. Preferably, the delay is between 48 ms and 60 ms, and more preferably 50 ms. The clapper having a non-ferrous slug may also be incorporated into existing circuit breakers by, for example, coupling the non-ferrous slug to the preexisting clapper, or replacing the clapper with a clapper assembly having at least one non-ferrous slug thereon.Type: GrantFiled: December 1, 2006Date of Patent: July 7, 2009Assignee: Eaton CorporationInventors: Anthony Thomas Ricciuti, Mark Allan Juds, John Joseph Hoegle, Thomas Kenneth Fogle, Robert Nicklos Krevokuch, Russel William Long, Daniel Evan Palmieri
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Patent number: 4710739Abstract: The trip mechanism of a molded case type circuit breaker is actuated by a plunger that is integral with and axially extends from the end of a reciprocally-movable core member of a solenoid mounted within the breaker housing. The free end of the plunger strikes the trip bar of the breaker when the solenoid is energized in response to a current overload condition in the circuit being protected. The solenoid core member and plunger are mechanically locked in NO-TRIP position by spring-biased keeper means that is automatically released from its "lock" position by the magnetic field generated by the solenoid coil when it is energized. A spring automatically resets the trip-actuating assembly when the current-overload condition has been corrected and the solenoid coil is deenergized.Type: GrantFiled: July 15, 1986Date of Patent: December 1, 1987Assignee: Westinghouse Electric Corp.Inventors: Carl J. Heyne, Nicholas A. Tomasic
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Patent number: 4697163Abstract: A circuit breaker having a trip delay mechanism characterized by a variable magnetic air gap that is adjustable to permit time delay at low level overcurrents to avoid nuisance tripping during motor starting.Type: GrantFiled: March 27, 1986Date of Patent: September 29, 1987Assignee: Westinghouse Electric Corp.Inventors: Kurt A. Grunert, James R. Farley
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Patent number: 4683451Abstract: A circuit breaker with a magnetic circuit for delaying the trip function and characterized by a dual variable magnetic circuit air gap which allows a time delay at low level overcurrents, such that motor starting transient currents do not prematurely trip the circuit breaker.Type: GrantFiled: March 14, 1986Date of Patent: July 28, 1987Assignee: Westinghouse Electric Corp.Inventors: Kurt A. Grunert, Alfred E. Maier
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Patent number: 4639700Abstract: A circuit interrupter with shock resistant mechanism characterized by a circuit breaker/contactor device in combination with an electromagnetic actuator which comprises a pair of opposed and facing solenoids having aligned armatures for actuating a linkage to open and close contacts of the circuit breaker contactor, and the linkage having a coupler link for movement between co-linear alignment with the armatures when the contacts are closed and for non-linearity when the contacts are open.Type: GrantFiled: February 19, 1986Date of Patent: January 27, 1987Assignee: Westinghouse Electric Corp.Inventors: Edward J. Shestak, David Marschik
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Patent number: 4504807Abstract: A magnetic circuit breaker has a U-shaped magnetizable plate between the solenoid coil and the plastic spool flange located below the pole piece that is engaged by the armature to trip the breaker. This U-shaped disc diverts some of the instantaneous flux created by an inrush current spike away from the pole piece to prevent premature or "instantaneous" tripping of the breaker until a predetermined multiple of rated current is exceeded. In the preferred embodiment this disc is provided in a slot formed in the plastic spool flange itself.Type: GrantFiled: June 1, 1984Date of Patent: March 12, 1985Assignee: Carlingswitch, Inc.Inventor: Ramesh Nar
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Patent number: 4436408Abstract: Copying apparatus including a processing unit for forming a visible image on a copy material, a process control device for operatively controlling the processing unit, and a manual power switch unit for supplying power to electric loads of the processing unit and the process control device. The manual power switch unit includes an actuator to maintain an On condition during the time from the beginning of manual turning on, to the activation of manual turning off, and a coil to release the On condition of the actuator before the activation of the manual turning off. The power switch unit further includes a power control device for driving the coil to release the actuator from the On condition to the Off condition after a predetermined time has elapsed since a completion of copying operations, wherein the power control includes a timer controlled by the process control device for driving the coil.Type: GrantFiled: December 24, 1980Date of Patent: March 13, 1984Assignee: Canon Kabushiki KaishaInventors: Tsuneki Inuzuka, Masato Ishida, Hiroshi Tanioka, Hisashi Sakamaki
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Patent number: 4378541Abstract: In a time delay switch comprising:a delay action means comprising an oil dash pot (9) containing a piston (21) of magnetic-flux-responsive substance disposed in an oil-filled cylinder,a magnetic circuit containing a permanent magnet (18) mechanically linked to a handle (8) and magnetically coupled to said piston (21), at least a fixed magnetic yoke (14, 15), at least a moving magnetic yoke (16, 17) and an armature (20) movable in reaction to a change of magnetic flux due to movement of the piston (21),at least a moving contact plate (13) linked to said armature (20) and at least a fixed contact plate (11) disposed to touch said moving contact plate (13),the improvement is thata case (1) which contains the abovementioned components is made of an insulating resin and has a first part (101) of larger depth and a second part (102) of smaller depth, said first part and said second part being each other integrally connected,said first part containing said oil dash pot fixed to said bottom part of said case (1), saiType: GrantFiled: November 19, 1980Date of Patent: March 29, 1983Assignee: Matsushita Electric Works, Ltd.Inventors: Hiroshi Kanada, Hiroshi Yamagiwa
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Patent number: 4315231Abstract: High-speed breaker for an electric circuit, including a fixed contact, movable contact and a movable holder for the movable contact. An actuating rod is reciprocally movable toward and away from the fixed contact between first and second positions. A head is connected to the actuating rod. In the first position of the actuating rod, the head engages with the movable holder to cause the movable contact to engage with the fixed contact. In the second position of the actuating rod, the movable contact is disengaged from the fixed contact. A release member connected to the head is operative in response to overcurrent passing through the circuit when the actuating rod is in the first position, to disengage the movable holder from the head to disengage the movable contact from the fixed contact. An extension of the actuating rod is located between the engaging position of the movable holder with the head and the connecting position of the release member to the head.Type: GrantFiled: December 9, 1980Date of Patent: February 9, 1982Assignee: Hitachi, LimitedInventors: Hisashi Kondo, Shozo Yamazaki, Yukio Yamada
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Patent number: 4238749Abstract: An electromagnetic circuit breaker is provided having a flux producing solenoid and a movable armature attractable to the solenoid upon the occurrence of a predetermined current level and duration. A flux path in the form of members of low reluctance are arranged so that the flux circuit comprises a plurality of loops, each loop having one or more variable reluctances which are dependent upon the position of the armature and a movable core located within the solenoid. Increased pulse resistance is obtained without substantially effecting the operation of the switch upon sustained overloads of a predetermined level and duration. The bobbin on which the solenoid coil is wound is provided with a groove with which a member of low reluctance is lockingly engaged. Other low reluctance members are configured to facilitate assembly of the circuit breaker.Type: GrantFiled: December 29, 1978Date of Patent: December 9, 1980Assignee: Texas Instruments IncorporatedInventors: Martin W. Lawson, David M. Brown
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Patent number: 4237436Abstract: An electromagnetic circuit breaker comprising a solenoid coil and an armature actuatable by the coil. A tube of nonmagnetic material within which is a movable magnetizable core, the tube having a pole piece at one end toward which the armature is attracted on predetermined overload conditions, the core being biased toward the end of the tube away from the pole piece.An inertial mass is carried by the armature and is pivotally and eccentrically connected to a link at one end. The link has another end pivotally mounted to a fixed support.Thus, when the armature is attracted to the pole piece the inertial mass is caused to rotate at an angular velocity greater than the angular velocity of the armature, so that the current in the coil required to overcome the bias on the armature with substantially no time delay, when the gap between the core and the pole piece is at its maximum, is substantially higher than the current required for a similar device but which omits the inertial mass.Type: GrantFiled: January 15, 1979Date of Patent: December 2, 1980Assignee: Heinemann Electric CompanyInventor: Edward J. Setescak
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Patent number: 4117285Abstract: Disclosed is a snap action circuit breaker with a compact one piece steel frame in a two part, telescoping molded circuit breaker case. The compact construction is combined with a symmetrical toggle actuator to provide a pleasing appearance suitable for mounting at readily accessible and visible locations on the front of an instrument panel. A variety of handle constructions are usable with the same basic mechanism. By providing a snap actuated contact construction with substantial overcurrent trip delay the device combines the best features of modern manual switches and circuit breakers so that it is in effect a manual switch with nuisance free over-current trip protection.Type: GrantFiled: August 19, 1977Date of Patent: September 26, 1978Assignee: Airpax Electronics IncorporatedInventor: George Sullivan Harper
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Patent number: 4062052Abstract: Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the delay core is elongated. An inertia wheel is mechanically coupled to the trip armature to further increase pulse tolerance so as to reduce nuisance tripping in the presence of high but very short term overcurrents. The circuit breaker provides a significantly improved motor protection characteristic.Type: GrantFiled: May 7, 1976Date of Patent: December 6, 1977Assignee: Airpax Electronics, Inc.Inventors: George S. Harper, Lyal N. Merriken
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Patent number: 3965450Abstract: An electromagnetic sensing device comprising a coil and a member magnetically coupled to the coil. An armature is movable relative to said member upon sufficient energization of the coil. A lever is carried by the member and is movable between first and second positions in response to the movement of the armature. The armature is operatively connected to the lever to move the lever on sufficient energization of the coil, whereupon a further mechanism coupled to the lever is actuated by the lever.Type: GrantFiled: February 6, 1975Date of Patent: June 22, 1976Assignee: Heinemann Electric CompanyInventor: Keith L. Schilling
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Patent number: 3959755Abstract: Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the delay core is elongated to extend in its normal biased position through the electrical center of the coil. An inertia wheel is mechanically coupled to the trip armature to further increase pulse tolerance so as to reduce nuisance tripping in the presence of high but very short term overcurrents.Type: GrantFiled: December 13, 1974Date of Patent: May 25, 1976Assignee: Airpax Electronics IncorporatedInventors: George S. Harper, Lyal N. Merriken
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Patent number: RE31690Abstract: Disclosed is a snap action circuit breaker with a compact one piece steel frame in a two part, telescoping molded circuit breaker case. The compact construction is combined with a symmetrical toggle actuator to provide a pleasing appearance suitable for mounting at readily accessible and visible locations on the front of an instrument panel. A variety of handle constructions are usable with the same basic mechanism. By providing a snap actuated contact construction with substantial overcurrent trip delay the device combines the best features of modern manual switches and circuit breakers so that it is in effect a manual switch with nuisance free over-current trip protection.Type: GrantFiled: September 17, 1980Date of Patent: October 2, 1984Assignee: No. American Philips Corp.Inventor: George S. Harper