Patents Examined by Alvin C. Chin-Shue
  • Patent number: 11229200
    Abstract: An adjustable tree stand has a housing in which a wheel rotates. The housing is strapped or otherwise secured to a tree in the usual way. The wheel has a first extension that protrudes from the housing and has a female receiver. A frame has a second extension with a downwardly directed male pin. The second extension sits atop the first extension with the pin received within the receiver to thereby connect the frame to the housing, Rotation of the wheel rotates the frame. A locking mechanism prevents the wheel from rotating when not desired. A threaded bolt passes through the frame and engages the housing in order to pivot the housing with respect to the frame. Appropriate platforms are attached to the frame.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: January 25, 2022
    Inventor: Christopher Norman Gardner
  • Patent number: 11225833
    Abstract: A ladder with a first guardrail locking system having a first pair of side rails with a first set of steps and a second pair of side rails with a second set of steps. The two sets of side rails are rotatably joined together by a pair of hinges at a first pair joining sections and a second pair joining sections. The first pair joining sections and the second pair joining sections have joint points such as indentations which engage the locking key of a first guardrail so that the first guardrail may be fixedly attached to the joining sections. The ladder may also have a second guardrail, wherein the second guardrail is attached to the first guardrail so that two guardrails form a ring around a user standing on a foldable stand of the ladder.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: January 18, 2022
    Inventor: Thomas Yoo
  • Patent number: 11220862
    Abstract: A ladder including a first frame, a second frame and a platform assembly. The first frame includes one or more fixed steps. The platform assembly includes a first platform pivotably coupled to the first frame, a second platform pivotably coupled to the first frame, a first linkage coupled between the second frame and one of the first platform and the second platform, and a second linkage coupled to the first platform and the second platform. The ladder is movable between a closed position and an open position.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: January 11, 2022
    Assignee: Tricam Industries, Inc.
    Inventors: Jeff Skubic, Dennis D. Simpson, Ben Williams, Yongxue Lu
  • Patent number: 11213705
    Abstract: A fall-protection apparatus with a movable protective shroud and with a sleeve assembly, the sleeve assembly including an informational sheet that is compactable and extendable.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 4, 2022
    Assignee: 3M Innovative Properties Company
    Inventor: Michael A. Boraas
  • Patent number: 11213704
    Abstract: A safety tie off device for use on roof or canopy structures includes a plate. The plate has a spacer bar and an anchor protruding substantially perpendicular to the plate. A locking assembly includes a knob or handle attached to a threaded rod, a locking plate, and a fastener connected to the locking plate. The device is configured to attach to a roof structure, thereby forming a detachable, stable safety tie off device for a user to anchor a safety harness.
    Type: Grant
    Filed: May 18, 2019
    Date of Patent: January 4, 2022
    Inventor: Gerry Smith
  • Patent number: 11208844
    Abstract: A mountable roller device for ladders. It is capable of integrating and attaching to step ladders, extension ladders, or most other standard ladders. The mountable roller device has a pair of side latches for connecting to the legs of the ladder, and also includes a plug for inserting into the void within the ladder steps of a typical ladder. Once affixed to the ladder, the ladder can be tipped and rolled along the roller wheel of the device. The roller wheel includes a groove to allow the device to be used as a pulley system with the ladder.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: December 28, 2021
    Inventor: Mark D. Ross
  • Patent number: 11208815
    Abstract: A scaffold clamp cooperates with a scaffold ledger to accommodate aligned placement of the scaffold clamp to the ledger at modular positions in the length of the ledger. The scaffold clamp includes an inwardly directed alignment lug sized for receipt in one or more clamp locating holes provided in the length of the ledger at modular positions. This arrangement provides accurate securement of the clamp to the ledger at predetermined modular positions and reduces problems that can occur with respect to erection of the scaffold system.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: December 28, 2021
    Assignee: AT-PAC CHINA BUSINESS TRUST
    Inventor: Peter Rogers
  • Patent number: 11208845
    Abstract: A ladder anchoring assembly includes a first mount that has a first space for insertably receiving a foot of a ladder and a first engagement for engaging the foot of the ladder. The first mount is attachable to a support surface upon which the foot of the ladder is positioned. A second mount is included that has a second space therein for insertably receiving the foot of the ladder and a second engagement for engaging the foot of the ladder. The second mount is attachable to the support surface having the second mount being directed toward the first mount. Thus, each of the first mount and the second mount surrounds the foot of ladder. In this way the first mount and the second mount restrain the foot of the ladder on the support surface.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: December 28, 2021
    Inventor: Leroy Trujillo
  • Patent number: 11198038
    Abstract: A tree stick mount attachment assembly includes a tree stick body. A panel has a front side, a back side, and a perimeter edge extending between the front and back sides. The backs side faces and is attached to the tree stick body. The perimeter edge has a plurality of slots therein and each of the slots extends through the front and back sides. The slots removably receive a tether extending around the tree to retain the tree stick body on the tree. The tether is attached to the tree stick body and extended around the tree. Thereafter, the tether is then extended into the slots to secure the tree stick body to the tree.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: December 14, 2021
    Inventors: Walter Ernest Power, II, Gregory Alan Godfrey, Shawn Paul Chadwick
  • Patent number: 11198027
    Abstract: A Decelerator Packed Tether constructed with a Bungee Section and a Deployment Section in a combination of materials which, when combined as herein described, and a fall is experienced by the user, the maximum arrest force is one that will present the least amount of impact on the user conventional safety harnesses.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: December 14, 2021
    Inventor: Sherry Green Mullins
  • Patent number: 11187039
    Abstract: A configurable ladder system that can be configured into any of a plurality of different ladder configuration modes and methods for manufacturing and using same. The configurable ladder system includes at least one side rail and at least one support member and can be configured into any of a plurality of different ladder configuration modes. Each support member is disposed on a relevant side rail or on an optional adjustable rail. Depending upon a selected ladder configuration mode of the configurable ladder system, two or more of the support members can be configured to engage respective support regions within an intended work environment of the configurable ladder system. Thereby, the configurable ladder system advantageously can be readily adapted for use within a wide range of different purposes within a large number of a different work environments while enhancing user safety.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: November 30, 2021
    Assignee: LOUISVILLE LADDER INC.
    Inventor: Francisco Javier Moreno Moncada
  • Patent number: 11187000
    Abstract: A scaffolding system is defined by a first primary platform connected to a first cantilevered ladder, a second primary platform connected to a second cantilevered ladder, and a work platform extending between and connected to the first and second primary platforms.
    Type: Grant
    Filed: February 17, 2019
    Date of Patent: November 30, 2021
    Assignee: Blue Moon Designs, LLC
    Inventor: Dale Martin Neubauer
  • Patent number: 11180222
    Abstract: Attachments for a collapsible marine ladder including a rung attachment for attaching to the ladder rungs. Each rung attachment includes an upper part having a first channel defined along a downward facing side of the upper part. The first channel receives an upward facing side of the rung. A downwardly angled section of the upper part extends below the rung when the upper part is attached to the rung. A pad is received on top of an upward facing side of the upper part and interfaces with a user's foot. A second channel on an upward facing side of a lower part receives a downward facing side of the rung such that the upper part attaches to the lower part. A rail attachment attaches to a rail of the ladder and receives a rail extension for extending the length of the rail. The rail extension has a handgrip.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 23, 2021
    Inventor: Robin Sabow
  • Patent number: 11174677
    Abstract: A vehicle-mounted access system includes a fixed base structure including a plurality of track channels; a plurality of movable hinge carriages configured to move along the plurality of track channels; an inclinable access structure pivotably connected to the movable hinge points and connected to lifting masts by forward tension elements, lifting masts connected to the fixed base structure by rear tension elements and pivotably connected to the fixed base structure; an actuator connected between the movable hinge carriages and the fixed base structure, the actuator configured to move the movable hinge carriages to raise the distal end of the inclinable access structure via the forward tension elements, the lifting mast, and the rear tension elements.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: November 16, 2021
    Inventor: Joshua Clemente
  • Patent number: 11174678
    Abstract: Embodiments include a telescoping ladder with a plurality of columns and rungs. The ladder can have a plurality of locking assemblies for locking adjacent columns to a rung thereby restricting relative sliding motion between adjacent columns. The locking assembly can have a locking button positionable against the rung front surface and rotatable with respect thereto between a locked position and an unlocked position. The locking assembly can have a locking pin positioned within the rung and slidable between an extended position and a retracted position along a locking pin axis generally perpendicular to the rotational axis. The locking assembly can have a connector pin extending in a direction parallel to the rotational axis, for connecting the locking button to the locking pin such that rotation of the locking button about the rotational axis slides the locking pin about the locking pin axis.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: November 16, 2021
    Assignee: Core Distribution, Inc.
    Inventors: Mitchell I. Kieffer, Nathan L. Schlueter
  • Patent number: 11168520
    Abstract: A ladder rung accessory assembly includes first and second caps have a respective base that is shaped to cover respective rung openings of a selected rung of an extension ladder to reduce acoustic noise during transport. Each cap includes a guide member that is received in the respective opening to position the attached base. Channels formed through the bases and guide members are shaped to receive a cable tie passing through each cap and the selected rung. The first cap is held against the ladder by a head of the cable tie and the second cap is held against the ladder by an internal pawl locking mechanism of the second cap that ratchets against a toothed tape section of the cable tie.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: November 9, 2021
    Inventors: Geoffrey Saylor, Andrew Saylor
  • Patent number: 11161726
    Abstract: A land vehicle assembly is provided with a platform for an operator workspace. A control panel is supported upon the platform in electrical communication with the land vehicle. A caution switch is supported upon the platform in electrical communication with the control panel to provide a signal to the control panel indicative of a caution event. A cable is connected to the caution switch to extend across the control panel. The cable is spaced apart from the control panel so that a predetermined force upon the flexible member actuates the caution switch without significantly obstructing the control panel. A manual force upon the flexible member expands the operator workspace. The control panel is programmed to control a mobile operation of the land vehicle, and discontinue the mobile operation of the land vehicle in response to receipt of the caution event signal.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: November 2, 2021
    Assignee: Terex South Dakota, Inc.
    Inventors: Chad Wicklund, Dax Wells, Denis Korolev, Greg Hieronymus, Mitch Ely, Adam Hailey, Chad Hislop
  • Patent number: 11154732
    Abstract: A speed-controllable lifter includes a movable plate, a fixed plate which connected with a hanging ring via a sliding rope. The movable plate is hanged on the sliding rope. A speed control device is provided in the fixed plate, having a stop hub, two stop pads, two arc-shaped stop pad supports and an adjustment means which includes an upper camshaft, a lower camshaft and an adjustment shaft arranged on the upper camshaft for adjusting an opening degree between movable ends of the two stop pad supports. A brake device is provided in the movable plate, having a brake drum, two brake pads, two arc-shaped brake pad supports and a brake means which includes a driving shaft, a driven shaft and a control bar arranged on the driving shaft for controlling a degree of the tightness of movable ends of the two brake pad supports.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: October 26, 2021
    Inventor: Hongfa Chen
  • Patent number: 11149494
    Abstract: A ladder safety lock disclosed herein includes a rod adapted for insertion through a ladder rung and at least one hinged flap attached an end of the rod that is configured for attachment to a free-standing secure structure, such as a portion of a roof or wall.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: October 19, 2021
    Assignee: TORRGRAM LLC
    Inventor: Chris F. Forseth
  • Patent number: 11143168
    Abstract: Disclosed is a rotor blade inspection device having a maintenance chamber through which a rotor blade can pass vertically, wherein the floor opening and a roof opening, through which the rotor blade can pass, are arranged in the chamber floor and in the chamber roof of the maintenance chamber, characterized in that the maintenance chamber is arranged on a supporting frame, and in that the bracing frame can be supported on a tower of a wind turbine, and in that the chamber floor and the chamber roof of the maintenance chamber are respectively designed as a diaphragm system in order to minimize a gap between the floor opening or roof opening and the rotor blade.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 12, 2021
    Assignee: WP SYSTEMS GMBH
    Inventors: Holger Müller, Jan Boesner, Robert Höfner, Ole Renner, Michael Zavesky