Patents by Inventor Stephen Arthur Langrell

Stephen Arthur Langrell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250072390
    Abstract: A livestock head holder for a head gate features a top holding member, a bottom holding member and an intermediate link connecting same, of which the intermediate link occupies an over-centered locking position in a fully open state of the head holder to prevent gravitational dropping of the top holding member. The head holder is infinitely adjustable in its installed height on the head gate, via use of tightenable clamps that engage through a slot between bars of a skeletal gate panel to make clamping embrace against a rear side of the head gate bars at any user-selectable heigh along the slot therebetween.
    Type: Application
    Filed: May 27, 2024
    Publication date: March 6, 2025
    Inventors: Stephen Arthur Langrell, Erik William Chobotar, Evan Thomas Upgang, Zachary Arthur Johnson
  • Publication number: 20240373814
    Abstract: Livestock handling equipment characterized by a modular alley construction employing shared bows with hole-penetrated front and rear faces for fastening of elongated structural beams and coupling of side panels at both of said faces. Longitudinally protruding coupling members on said side panels for engaging said holes include grooved and longitudinally extendable/retractable pivot pins at the bottom ends of the side panels. Selectively mountable/removable cladding members enable convenient strategic customization of cladding coverage to optimize livestock flow via pressure zone techniques, physical intervention and/or light-based attraction, and also enable physical access for inspection and treatment of the animals.
    Type: Application
    Filed: May 14, 2024
    Publication date: November 14, 2024
    Inventor: Stephen Arthur Langrell
  • Publication number: 20240292809
    Abstract: A livestock headgate has a pair of gate panels movable between closed and open positions holding an releasing an animal in an exit opening of a livestock chute. Each gate panel, at the inner edge thereof facing the other gate panel, has a respective angled bracing surface for abutting against a respective lateral side of a neck of the livestock animal in the gate's closed position. In a forward direction moving toward a front of the gate that faces outward from the chute, the angled bracing surfaces are of convergent relation to one another, and thus closer together near the animal's head and further apart from one another closer to the animal's shoulders. The angled bracing surfaces help prevent back-out of wide-necked animals from the closed gate, and may be embodied as auxiliary bracing members of an optional add-on kit for a standard head gate.
    Type: Application
    Filed: September 14, 2021
    Publication date: September 5, 2024
    Inventors: Philip Malcolm Firth, Stephen Arthur Langrell
  • Patent number: 12075749
    Abstract: Livestock handling equipment characterized by a modular alley construction employing shared bows with hole-penetrated front and rear faces for fastening of elongated structural beams and coupling of side panels at both of said faces. Longitudinally protruding coupling members on said side panels for engaging said holes include grooved and longitudinally extendable/retractable pivot pins at the bottom ends of the side panels. Selectively mountable/removable cladding members enable convenient strategic customization of cladding coverage to optimize livestock flow via pressure zone techniques, physical intervention and/or light-based attraction, and also enable physical access for inspection and treatment of the animals.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: September 3, 2024
    Assignee: Northquip Inc.
    Inventor: Stephen Arthur Langrell
  • Publication number: 20230345904
    Abstract: A livestock squeeze chute is operable in parallel-squeeze, V-squeeze and inverted-V squeeze configurations, and has a head gate with a novel guide track construction for robust rolling support of the gate panels, and a neck extender having uniquely positioned actuators that pull the neck extender upwardly into its working position. The squeeze panels are supported in suspended and hinged fashion from a set of movable supports that are displaceable laterally back and forth along a set of overhead support tracks. A pair of upper actuators are operable to move the hinged-equipped supports, and thereby relocate the tops of the squeeze panels, while a set of lower actuators are operable to relocate the bottom ends of the squeeze panels. The head gate's guide track uses two L-shaped bars and a cooperating U-channel to define a pair of enclosed channels in which roller carriages of the two gate panels are respectively received.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 2, 2023
    Inventors: Philip Malcolm Firth, Stephen Arthur Langrell
  • Publication number: 20230337628
    Abstract: A portable livestock corral features a central alleyway subdivided into two alleys and having two sets of foldable corral panels for forming livestock pens on opposing sides of the alleyway. On either side of the alleyway, a bud box is selectively deployable at a corner of the respective livestock pen that resides across from an openable/closable alleyway side-gate of the other pen, whereby loading of the alleyway from either pen can exploit such a bud box. Inside the alleyway, an internal swing gate is lockable in different positions to enable opening of both alleys, or selectively closure of either one of the two alleys, which can serve as a livestock-free zone safely occupiable of a human operator. In transport mode, a safety bar with deployable stops at its opposing ends mechanically restrains the folded-up corral panels on both sides of the alleyway for optimal road safety.
    Type: Application
    Filed: December 22, 2022
    Publication date: October 26, 2023
    Inventor: Stephen Arthur Langrell
  • Publication number: 20220312720
    Abstract: Livestock handling equipment characterized by a modular alley construction employing shared bows with hole-penetrated front and rear faces for fastening of elongated structural beams and coupling of side panels at both of said faces. Longitudinally protruding coupling members on said side panels for engaging said holes include grooved and longitudinally extendable/retractable pivot pins at the bottom ends of the side panels. Selectively mountable/removable cladding members enable convenient strategic customization of cladding coverage to optimize livestock flow via pressure zone techniques, physical intervention and/or light-based attraction, and also enable physical access for inspection and treatment of the animals.
    Type: Application
    Filed: July 30, 2019
    Publication date: October 6, 2022
    Inventor: Stephen Arthur Langrell
  • Patent number: 11445698
    Abstract: A livestock squeeze chute is operable in parallel-squeeze, V-squeeze and inverted-V squeeze configurations, and has a head gate with a novel guide track construction for robust rolling support of the gate panels, and a neck extender having uniquely positioned actuators that pull the neck extender upwardly into its working position. The squeeze panels are supported in suspended and hinged fashion from a set of movable supports that are displaceable laterally back and forth along a set of overhead support tracks. A pair of upper actuators are operable to move the hinged-equipped supports, and thereby relocate the tops of the squeeze panels, while a set of lower actuators are operable to relocate the bottom ends of the squeeze panels. The head gate's guide track uses two L-shaped bars and a cooperating U-channel to define a pair of enclosed channels in which roller carriages of the two gate panels are respectively received.
    Type: Grant
    Filed: January 21, 2022
    Date of Patent: September 20, 2022
    Assignee: Northquip Inc.
    Inventors: Philip Malcolm Firth, Stephen Arthur Langrell
  • Publication number: 20220287266
    Abstract: A livestock squeeze chute features a side-gate frame delimiting a side-access opening for lateral access to an animal secured in the chute's head gate. An openable/closeable side-gate is movably coupled to the gate frame to enable selective obstruction of a lower area of the side-access opening. An upper barrier is movably coupled to the side-gate for movement into and out of a closed state at least partially obstructing an upper area of said side-access opening. A hinged connection by which said side-gate is both pivotably and removably coupled to said gate frame comprises a set of male stub shafts and a cooperating set of female receptacles, by which said side-gate is pivotally movable at a first elevation, and fully removable when lifted to a greater second elevation. When both are removed from the frame, the barrier is set an angle forming a supportive prop for the gate.
    Type: Application
    Filed: November 29, 2019
    Publication date: September 15, 2022
    Inventors: Philip Malcolm Firth, Stephen Arthur Langrell
  • Publication number: 20220272939
    Abstract: A head gate drive assembly for a livestock chute features a rectangular longitudinal shaft at a first side of the chute, a handle slidable along the shaft and operable to rotate same, and a control arm coupled to the shaft at the front of the chute to operate the head gate. The arm and shaft are directly coupled in a fastener-free removable manner enabling remounting of the arm in a reversed orientation for use at an opposing second side of the chute. Front and rear support assemblies for the shaft are removably mounted at first predefined mounting locations on the first side of the chute, which are mirrored by a second set of predefined mounting locations on the second side of the chute. The front support assembly features bushings of circular outer profile rotatable inside a housing, and of rectangular inner profile conforming to the shaft passing through said housing.
    Type: Application
    Filed: November 19, 2019
    Publication date: September 1, 2022
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Publication number: 20220248633
    Abstract: A livestock squeeze chute is operable in parallel-squeeze, V-squeeze and inverted-V squeeze configurations, and has a head gate with a novel guide track construction for robust rolling support of the gate panels, and a neck extender having uniquely positioned actuators that pull the neck extender upwardly into its working position. The squeeze panels are supported in suspended and hinged fashion from a set of movable supports that are displaceable laterally back and forth along a set of overhead support tracks. A pair of upper actuators are operable to move the hinged-equipped supports, and thereby relocate the tops of the squeeze panels, while a set of lower actuators are operable to relocate the bottom ends of the squeeze panels. The head gate's guide track uses two L-shaped bars and a cooperating U-channel to define a pair of enclosed channels in which roller carriages of the two gate panels are respectively received.
    Type: Application
    Filed: January 21, 2022
    Publication date: August 11, 2022
    Inventors: Philip Malcolm Firth, Stephen Arthur Langrell
  • Publication number: 20220248632
    Abstract: A livestock head holder with movably supported top and bottom holding members movable by an operating mechanism into a closed state bracing against the topside and underside of an animal's head, neck or jaw region. Selectively attachable scoop extensions for the bottom head holder enable selective enlargement of a neck scoop thereof for more effective performance on larger animals of greater size at said body region. A selectively attachable/removable stabilizer on the top holding member is of increased breadth relative to a main elongated bar of the top holding member to increase the area of surface contact at the topside of said body region. This spreads the holding force over a greater area and reduces pressure concentration on the animal's body to provide increased comfort and a calming effect.
    Type: Application
    Filed: October 28, 2019
    Publication date: August 11, 2022
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Patent number: 11317597
    Abstract: A livestock force tub features a perimeter structure delimiting an interior space of said livestock tub, including a main peripheral wall spanning circumferentially around a central upright axis, an exit situated at or proximate a terminal end of the main peripheral wall and a supplemental wall section at an area adjacent the exit on a side thereof opposite the terminal end of the main peripheral wall. The supplemental wall section increases an angular span of the tub around the central axis to create an auxiliary space beyond the exit. This auxiliary space accommodates a possible uncooperative animal during unloading of the force tub while allowing others to still reach the exit. The supplemental wall section and a terminal section of the main peripheral wall have a lesser opacity than more significantly cladded areas of the main peripheral wall, whereby increased light admission and environmental visibility attract livestock toward the exit.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: May 3, 2022
    Assignee: Northquip Inc.
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Patent number: 11129355
    Abstract: A portable livestock handling apparatus features a set of arc-shaped wall panels carried on a rearmost section of a towable chassis, and pivotally interconnected to one another for swinging movement between deployed positions forming continuous arcuate extensions of one another to collectively define an arcuate wall span of the tub, and stowed positions folded up alongside one another to occupy a compact area on the chassis. The rearmost chassis section is longer on one side than the other, and features a chassis extension extendable from the rear end of the chassis to connect to one of the deployed panels. This elongated side and extension form the only ground-level connections between the chassis and the tub wall to minimize tripping hazards.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: September 28, 2021
    Assignee: Northquip Inc.
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Publication number: 20210219516
    Abstract: A portable livestock handling apparatus features a set of arc-shaped wall panels carried on a rearmost section of a towable chassis, and pivotally interconnected to one another for swinging movement between deployed positions forming continuous arcuate extensions of one another to collectively define an arcuate wall span of the tub, and stowed positions folded up alongside one another to occupy a compact area on the chassis. The rearmost chassis section is longer on one side than the other, and features a chassis extension extendable from the rear end of the chassis to connect to one of the deployed panels. This elongated side and extension form the only ground-level connections between the chassis and the tub wall to minimize tripping hazards.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 22, 2021
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Publication number: 20200062163
    Abstract: A portable livestock apparatus has a frame, removable transport wheels situated on a wheel axis located intermediately between opposing front and rear ends of the frame, and a front lifting jack mechanism disposed forwardly of the wheel axis. Transition of the apparatus between a ground-seated field-use position and a wheel-carried transport position is performed using only the front lifting jack mechanism, without requiring a separate rear lifting jack mechanism behind the wheel axis to enable installation and removal of the transport wheels. Full extension of the front lifting jack mechanism raises the front end far enough to provide sufficient ground clearance at the wheel axis for installation and removal of the transport wheels. A singular lift-lower operation by the singular jack thus enables both hitch connection/disconnection and wheel installation/removal.
    Type: Application
    Filed: August 9, 2019
    Publication date: February 27, 2020
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Patent number: D881676
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: April 21, 2020
    Assignee: Northquip Inc.
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Patent number: D943767
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 15, 2022
    Assignee: Northquip Inc.
    Inventors: Stephen Arthur Langrell, Philip Malcolm Firth
  • Patent number: D957749
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 12, 2022
    Assignee: Northquip Inc.
    Inventor: Stephen Arthur Langrell
  • Patent number: D1047228
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: October 15, 2024
    Assignee: Northquip Inc.
    Inventor: Stephen Arthur Langrell