Patents Assigned to Mallory Sonalert Products, Inc.
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Patent number: 10309594Abstract: A stack light with a light section having a housing with a plurality of at least partially translucent side walls and having a plurality of opposing light sources on longitudinally opposite ends of the housing to produce a very even blended light. A stack light system with one or more such light sections also includes a sound section having a hollow housing and a set of interchangeable acoustic chambers configured for insertion into the hollow housing, each chamber including a piezoelectric transducer and having a side wall structure configured to abut an inner side wall surface of the hollow housing, the chamber, transducer and housing together defining a resonant cavity.Type: GrantFiled: May 1, 2017Date of Patent: June 4, 2019Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Mark T. Monnett
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Patent number: 9619983Abstract: A wireless tandem alarm having a first alarm configured for physical connection to an industrial machine having an electronic machine controller, and a second alarm configured for detachable connection to the first alarm or to the industrial machine. Each alarm has a housing, a piezoelectric transducer within the housing, a processor configured to drive the piezoelectric transducer in response to a control signal, and a wireless transceiver configured for relatively short-range, low-power communications. In the first alarm, the processor drives the piezoelectric transducer in response to a signal from the machine controller and, also responsive to the machine controller signal, transmits a control signal via the wireless transceiver. In the second alarm, the wireless transceiver receives the control signal from the first alarm and supplies it to the processor, which is configured drive the piezoelectric transducer in response.Type: GrantFiled: May 11, 2015Date of Patent: April 11, 2017Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Daniel W. O'Brien, Mark T. Monnett
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Patent number: 9576442Abstract: In further development of U.S. Pat. No. 6,310,540 B1, an audible signal device comprising of a microprocessor or microcontroller and a sounder element, or a microprocessor or microcontroller in conjunction with electronic circuitry such as discrete components, inductors, or IC's with a sounder element where the resulting sound pressure level is controlled by changing the drive signal's frequency, size, shape, and/or duty cycle.Type: GrantFiled: March 17, 2014Date of Patent: February 21, 2017Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Joshua K. Brown, Mark T. Monnett
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Patent number: 9165440Abstract: A panel-mountable audible and visual warning device comprising a main housing and a cap thereon, the device configured to have the main housing fit into a hole in the face of a mounting panel and to have the front wall and side wall of the cap external to the panel when the device is operably mounted therein, with the cap containing a piezoelectric transducer and at least one LED as a modular subassembly which is attached to the main housing. The cap and transducer together define an audio-frequency resonant cavity, and the cap has the LED(s) mounted therein in a position in front of the panel face in use and behind and radially outward of the transducer so as to emit light directly forward past the transducer.Type: GrantFiled: February 21, 2014Date of Patent: October 20, 2015Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Daniel W. O'Brien
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Patent number: 9030318Abstract: A wireless tandem alarm having a first alarm configured for physical connection to an industrial machine having an electronic machine controller, and a second alarm configured for detachable connection to the first alarm or to the industrial machine. Each alarm has a housing, a piezoelectric transducer within the housing, a processor configured to drive the piezoelectric transducer in response to a control signal, and a wireless transceiver configured for relatively short-range, low-power communications. In the first alarm, the processor drives the piezoelectric transducer in response to a signal from the machine controller and, also responsive to the machine controller signal, transmits a control signal via the wireless transceiver. In the second alarm, the wireless transceiver receives the control signal from the first alarm and supplies it to the processor, which is configured drive the piezoelectric transducer in response.Type: GrantFiled: March 15, 2013Date of Patent: May 12, 2015Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Daniel W. O'Brien, Mark T. Monnett
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Patent number: 8797176Abstract: A panel-mountable audible and visual warning device having an internal volume control shutter within a resonant cavity defined by the device housing and a sound generating element within the housing. Another embodiment has a cap on a main housing which fits into a hole in a mounting panel, with the cap external to the panel, the cap having multiple LEDs mounted therein in front of the panel face and behind and radially outward of a piezoelectric transducer so as to emit light directly forward past the transducer. Another cap embodiment has a piezoelectric transducer, LEDs, and a pushbutton switch mechanism including a movable surface portion of the cap's front wall and an internal set of switch contacts operably connected thereto. A control circuit can partially disable the alarm signaling function, such as by muting the transducer but continuing to energize the LEDs in response to actuation of the switch.Type: GrantFiled: December 15, 2011Date of Patent: August 5, 2014Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Daniel W. O'Brien
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Patent number: 8674817Abstract: In further development of U.S. Pat. No. 6,310,540 B1, an audible signal device including a microprocessor or microcontroller and a sounder element, or a microprocessor or microcontroller in conjunction with electronic circuitry such as discrete components, inductors, or IC's with a sounder element where the resulting sound pressure level is controlled by changing the drive signal's frequency, size, shape, and/or duty cycle.Type: GrantFiled: January 23, 2012Date of Patent: March 18, 2014Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Joshua K. Brown, Mark T. Monnett
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Patent number: 7880593Abstract: The invention is an improved audible signaling device with a speaker, a sound chamber, and associated circuitry. The device creates a loud, audible fundamental frequency, and harmonic frequencies that are relatively equal in amplitude to the amplitude of the fundamental frequency.Type: GrantFiled: February 5, 2008Date of Patent: February 1, 2011Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Daniel O'Brien, Mark T. Monnett
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Patent number: 6987445Abstract: The invention is an modified audible signal, such as a piezoelectric noise-making and audible signaling device, which further includes a hydrophobic covering material, such as polytetrafluoroethylene (PTFE). The hydrophobic covering material is known to be water resistant, but does not effect the sound of the audible signaling device, thereby delaying or preventing the failure of the audible signaling device from water corrosion.Type: GrantFiled: September 22, 2000Date of Patent: January 17, 2006Assignee: Mallory Sonalert Products, Inc.Inventors: George A. Burnett, Joshua K. Brown, Daniel W. O'Brien
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Patent number: 6756883Abstract: The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.Type: GrantFiled: November 12, 2002Date of Patent: June 29, 2004Assignee: Mallory Sonalert Products, Inc.Inventors: George Alan Burnett, Christopher Michael Baldwin
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Patent number: 6617967Abstract: A piezoelectric transducer driving circuit has a main oscillator stage, a buffer circuit, and a voltage-doubling circuit. The main oscillator stage includes a frequency-swept signal generator that can be configured to provide different outputs to the buffers, which in turn provide the output to the voltage-doubling circuit, which supplies the piezoelectric transducer, causing it to mechanically deform and produce audible sounds of different types.Type: GrantFiled: January 10, 2001Date of Patent: September 9, 2003Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher Baldwin, George Burnett, Daniel O'Brien
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Patent number: 6512450Abstract: The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.Type: GrantFiled: January 20, 2000Date of Patent: January 28, 2003Assignee: Mallory Sonalert, Products, Inc.Inventors: George Alan Burnett, Christopher Michael Baldwin
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Patent number: D898600Type: GrantFiled: July 20, 2017Date of Patent: October 13, 2020Assignee: Mallory Sonalert Products, Inc.Inventors: Christopher M. Baldwin, Mark T. Monnett
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Patent number: D976143Type: GrantFiled: May 16, 2019Date of Patent: January 24, 2023Assignee: MALLORY SONALERT PRODUCTS, INC.Inventor: Christopher M. Baldwin
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Patent number: D986086Type: GrantFiled: October 1, 2020Date of Patent: May 16, 2023Assignee: MALLORY SONALERT PRODUCTS, INC.Inventors: Christopher M. Baldwin, Mark T. Monnett