Patents Assigned to Federal Signal Corporation
  • Patent number: 10844942
    Abstract: A power split and creep drive system for street sweeper or like specialty vehicle having a single engine is disclosed. The system intends to retrofit and convert on-highway truck chassis into specialty vehicles capable of performing work function and moving at creeping speed, such as a street sweeper. It includes a hydraulic work circuit or power-take-off (PTO) port, a planetary gear set, a hydraulic system comprising pumps and motors to drive the working devices and balance the demand between propulsion and work function such as sweeping. The planetary gear set includes an input shaft connecting to a transmission output shaft of the chassis, a first output shaft connecting to a hydraulic machine, and a second output shaft to vehicle propulsion drive shaft.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 24, 2020
    Assignee: Federal Signal Corporation
    Inventor: Xiaolun Huang
  • Patent number: 10823370
    Abstract: Light beacons and light beacon systems including a lens or housing configured to collimate light emitted from two discrete optical focal points positioned along a central longitudinal axis of the beacon. The example lens can be, e.g., cylindrical or frusto-conical, and an outer surface of the lens defines at least a first region that is optically tuned to a first of the optical focal points, a second region that is optically tuned to a second of the optical focal points, and a third region that is optically tuned to both focal points.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: November 3, 2020
    Assignee: Federal Signal Corporation
    Inventor: Duane P. Belitz
  • Patent number: 10810866
    Abstract: A system for object detection within a monitored zone around a vehicle includes: at least one processor; and memory encoding instructions which, when executed by the processor, cause the system to: detect an object; and suppress an alert associated with detection of the object when a size of the detected object is below a lower size threshold value or above an upper size threshold value.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: October 20, 2020
    Assignee: FEDERAL SIGNAL CORPORATION
    Inventors: Justin Karl Barth, Paul J. Ferrara, Albena Iotova-Gagnaire, Michael K. Pula, Scott T. Rohrbaugh
  • Patent number: 10802699
    Abstract: A service mode selection system for a service vehicle is provided for simplifying a control for setting the vehicle in a desired service mode. The system includes a control system for receiving an operator's selection of service mode via a service mode selection device and controlling vehicle components to automatically set the vehicle in a selected service mode. The service mode selection device can be arranged in a cab of the vehicle and allows the operator to conveniently select a desired service mode, thereby achieving a work-ready machine with as few operator inputs as possible.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 13, 2020
    Assignee: Federal Signal Corporation
    Inventors: Jared James Brodbeck, Benjamin Bacha
  • Patent number: 10797669
    Abstract: An example speaker for providing alerts includes: a housing and a cover forming an integrated unit; a microphone configured to sense an ambient noise level; and a processor configured to adjust a volume of the speaker based upon the ambient noise level. A hinge can be positioned between the housing and the cover to allow the cover to be pivoted relative to the housing from a close position to an open position.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 6, 2020
    Assignee: Federal Signal Corporation
    Inventors: Scott M. Cassidy, Lonnie E. Moravetz, Mark J. Dietel
  • Patent number: 10774488
    Abstract: A street sweeper configured to clean a street can include: at least one broom or sprayer configured to clean a street, a street surface deviation detection device coupled to the street sweeper, the street surface deviation detection device being configured to detect visual signatures of defects in a surface of the street; and a position device to measure the position of the street sweeper, wherein the position device is programmed to send the position to a central server.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 15, 2020
    Assignee: Federal Signal Corporation
    Inventor: Scott Thomas Rohrbaugh
  • Patent number: 10759324
    Abstract: A boom hose apparatus for a material collection vehicle includes a telescoping boom assembly and a hose assembly supported by the boom assembly. The boom assembly includes a plurality of telescoping conduits. A flexible hose is received through the telescoping conduits and can slidably extend from, or retract into, the conduits independently from the telescoping of the conduits.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: September 1, 2020
    Assignee: Federal Signal Corporation
    Inventors: Joshua Lee Malmassari, Xiaolun Huang
  • Patent number: 10696211
    Abstract: Lighting systems, devices, and units that provide illumination according to a detected orientation relative to a reference plane or a reference vector. In some examples, a light bar for use on a vehicle includes first and second sets of light emitters that are selectively activated and inactive based on a detected orientation of the light bar relative to a reference plane or reference vector.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: June 30, 2020
    Assignee: FEDERAL SIGNAL CORPORATION
    Inventors: Vincent S. Fleszewski, Robert A. Czajkowski
  • Patent number: 10607474
    Abstract: A safety system can include: at least one wearable device configured to communicate with a central hub of a facility; and the central hub programmed to determine a location of the at least one wearable device within the facility, and to provide emergency instructions to the at least one wearable device based upon the location.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: March 31, 2020
    Assignee: Federal Signal Corporation
    Inventors: David Louis Strebel, Paul M. Gergets, Michael K. Pula, Justin Barth, Paul John Ferrara, Albena Plamenova Iotova-Gagnaire, Jorge Manuel Jacinto Guerreiro
  • Patent number: 10594928
    Abstract: A body camera can include: a camera configured to capture images; and a sensor module programmed to: sense a strength of a field within an emergency vehicle; activate the camera when the strength of the field falls below a certain threshold; and deactivate the camera when the strength of the field exceeds the threshold. The body camera can include a receiver configured to wirelessly receive power from an energy source within the emergency vehicle. An autonomous vehicle can also be carried by the emergency vehicle, with the autonomous vehicle being configured to be automatically activated and/or charged.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 17, 2020
    Assignee: Federal Signal Corporation
    Inventors: Vishnu Swaminathan, David Joseph Jablonsky, Scott Thomas Rohrbaugh
  • Patent number: 10584699
    Abstract: A piston assembly is provided with a piston head retaining structure. The piston assembly includes a piston shaft and a piston head disposed around the piston shaft and providing a piston head face that faces a cylinder wall. The piston assembly further includes a piston head mount element arranged adjacent to the piston head and mounted around the piston shaft and a tensioning device that generates an axial tension between the piston shaft and the piston head.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 10, 2020
    Assignee: Federal Signal Corporation
    Inventor: Xiaolun Huang
  • Patent number: 10543514
    Abstract: A waterblasting system includes a fluid supply device, an air supply device, and a waterblasting tool. The air supply device contains a battery and an alternator in a single unit. The alternator is operated by compressed air from a separate air compressor and generates electric power, at least some of which is used to charge the battery.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 28, 2020
    Assignee: Federal Signal Corporation
    Inventor: John Bolling Schaer, III
  • Patent number: 10532688
    Abstract: A dumping vehicle includes a vehicle elevation system for elevating a body of a vehicle. The system can use one or more components of a vehicle as a main support against which a vehicle body is elevated. In certain examples, a suspension device of the vehicle can be used as the main support. The system further includes an elevation device arranged between the suspension device and a vehicle frame and configured to elevate the vehicle body by lifting the vehicle frame against the suspension device.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 14, 2020
    Assignee: Federal Signal Corporation
    Inventors: Jerry Wayne Richards, Jay Ghelani, John Benton Stafford
  • Patent number: 10504516
    Abstract: A voice control system for a police vehicle, including: a single azimuthally-sensitive directional microphone configured to receive an audio command for controlling an aspect of the police vehicle and identify a direction of origin of the audio command; and a controller including a processor and tangible memory encoding instructions which, when executed by the processor, cause the controller to: identify a command associated with the audio command received by the single azimuthally-sensitive directional microphone; and when the direction of origin allows for the command, initiate the command to control the aspect of the police vehicle.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: December 10, 2019
    Assignee: Federal Signal Corporation
    Inventors: Justin Barth, Paul Ferrara, Jorge Guerreiro, Albena Iotova-Gagnaire, Michael Pula, Scott Thomas Rohrbaugh
  • Patent number: 10436624
    Abstract: A sewer cleaning vehicle includes a monitoring device for detecting a water level in a plurality of water tanks using a sensor engaged with the water tanks. The vehicle can present to an operator the water level together with operational conditions of the vehicle. The vehicle can continuously fill the water tanks based on the water level, and inform the operator of the water tanks having a water level lower than a user-configurable threshold.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: October 8, 2019
    Assignee: Federal Signal Corporation
    Inventor: Jared James Brodbeck
  • Patent number: 10410510
    Abstract: An example hazardous detection call point station can include: a common rear housing; a front housing, wherein the common rear housing and the front housing are configured to be coupled to form a housing defining an interior; and an actuator cylinder positioned at least partially within the interior; wherein, upon breaking a glass front or depressing a button of the station, the actuator cylinder is biased to rotate to complete a circuit and thereby send an alarm notification to a main panel at a remote location.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: September 10, 2019
    Assignee: Federal Signal Corporation
    Inventor: Myron Pavlacka
  • Patent number: 10408196
    Abstract: A piston shifting control system is provided to control a displacement pump to maximize a stroke length of a piston and prevent damages to the entire pump system. The displacement pump may include a linear variable displacement transducer (LVDT) inserted through one end of a cylinder body and used to detect a position of the piston within the cylinder. The shifting control system is configured to monitor a position of the piston assembly in the displacement pump and adjust a shifting trigger point of the piston assembly in each stroke to maximize the stroke length.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: September 10, 2019
    Assignee: Federal Signal Corporation
    Inventor: Xiaolun Huang
  • Patent number: 10329723
    Abstract: A system can include: a street sweeper configured to clean a street, the street sweeper including: a meter module to detect a consumption of water by the street sweeper, wherein the meter module is programmed to quantify an amount of water used by the street sweeper and to send the amount of water to a central server; and a street surface deviation detection device coupled to the street sweeper, the street surface deviation detection device being configured to measure changes in a surface of the street and send the changes to the central server; and the central server programmed to receive the amount of water.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: June 25, 2019
    Assignee: Federal Signal Corporation
    Inventor: Scott Thomas Rohrbaugh
  • Patent number: 10323634
    Abstract: An improved manifold and valve cartridges suitable for high power (over 600 hp) reciprocating pumps for water blast or jet applications are disclosed. In one aspect, the disclosed valve cartridges are compact and mounted axially along a seat member that has a central bore in addition to suction and discharge seats. The seat member can also be provided a plurality of radially arranged bores for allowing suction flow to the pump. A spool valve assembly can be mounted through the seat member bore, and can include a valve spool, a spherical suction valve member, a compression spring, and compression-locked rings. The spool valve can include a closed flanged end that engages with the seat member discharge seat. In operation, the compression spring continuously pushes the spool valve closed flanged end against the discharge seat and pushes the suction valve member against the suction seat to retain a normally closed position.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: June 18, 2019
    Assignee: Federal Signal Corporation
    Inventor: Xiaolun Huang
  • Patent number: 10258912
    Abstract: Highly efficient particulate collectors, such as for dust and street debris collected by a mobile street cleaning vehicle, with very low pressure loss are disclosed. One embodiment uses a specially contoured passage to separate the solid particles from particulate-laden gas stream by rapid directional change at a throat region. By using the Venturi effect at the accelerating zone communicating with a gas return channel from the particulate retaining chamber, a small amount of the gas will be recirculated from the deposit zone to help move and retain the separated particles in a confined collection receptacle.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 16, 2019
    Assignee: FEDERAL SIGNAL CORPORATION
    Inventor: Xiaolun Huang