Abstract: A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, an electromagnetic brake, and a manual release device. The electromagnetic brake is movable between an engaged position and a disengaged position. In the event of a power failure, the electromagnetic brake is biased toward and engaged position, where an armature is biased away from a magnetic body and into contact with a friction disk by at least one engagement spring, thereby preventing rotation of the friction disk. In a disengaged position, a current is applied to the wire coil to produce an electromagnetic force on the armature that overcomes a spring force of the at least one engagement spring, thereby compressing the at least one engagement spring, pulling the armature out of contact with the friction disk, and allowing the rotation of the friction disk.

Abstract: Provided is a door which has a first sash, at least a second sash slidable along rails, and at least one automatic fastening device for automatically fastening the at least one second sash to the first sash when the at least one second sash reaches an engagement position with an abutment part of the first sash. A control system moves the rails relative to frame cross-pieces between a forward position in which the rails are engageable with the at least one second sash, and a retracted position in which the rails are non-interfering with the at least one second sash, allowing a sash pack formed by the first sash and the at least one second sash fastened to the first sash to rotate about a vertical axis.

Abstract: A relief apparatus and method of use for providing a flexible connection point between straps of a harness and mitigating suspension trauma for a user of the harness. In various embodiments, the relief apparatus comprises a base plate comprising one or more base strap slots and a central cavity defined by a cavity wall protruding out of a plane of the base plate, and an upper plate comprising one or more upper strap slots and an aperture configured to fit around the cavity wall of the base plate. The base plate and the upper plate are arrange concentrically along a central axis and may be configured to each rotate about the central axis. The relief apparatus further comprises a relief step comprised of a line and having a proximal end and a distal end, the distal end being secured to a deployment feature.

Abstract: A bi-fold door stop controls movement and travel of lead and pivot doors in a set of vertically hung bi-fold doors. The bi-fold door stop has at least two non-parallel surfaces that each may act upon one or both of the lead and pivot door stiles to limit movement in two directions. Movement transverse to the track longitudinal axis is limited when the bi-fold door is either fully open or fully closed, while parallel movement is controlled by limiting the extent that the bi-fold door may be opened. At least two non-parallel surfaces are provided that each may act upon one or more of the lead and pivot door stiles, while an additional surface may act upon the face of the pivot door. The bi-fold door stop may be fabricated as a single part using common molding operations, and acts directly on the door panels, thereby preserving bi-fold door hardware.

Abstract: In one aspect, a covering for an architectural structure includes a headrail, a bottom rail, and first and second lift straps extending between the headrail and the bottom rail. The covering also includes first and second lift spools rotatable to spool up the first and second lift straps, respectively, as the bottom rail is being moved relative to the headrail. The first lift strap winds on top of itself as the first lift strap is spooled onto the first lift spool, and the second lift strap winds on top of itself as the second lift strap is spooled onto the second lift spool. In addition, the covering includes a leveling shim provided in association with the first lift strap to provide a localized increase in an effective thickness of the first lift strap.

Abstract: An extendable hunting stand includes a post assembly and a platform assembly. The post assembly includes multiple posts, and includes an outer post having an upper end defining an opening, an inner post telescopically arranged within the outer post. The inner post is configured to extend through the opening at the upper end of the outer post. The platform assembly is movable between a lower end and an upper end of the inner post. A lifting assembly automatically moves the platform assembly along the inner post between the lower end and the upper end of the inner post.

Abstract: A fixed window panel is fixed relative to a frame portion. A drive system is operable to move a movable window panel between an opened position and a closed position. The drive system includes (i) a drive motor, (ii) a threaded shaft rotatably driven by the drive motor, (iii) a connecting element that threadedly receives the threaded shaft and (iv) a window connector that is attached at the movable window panel and that pivotally connects to the connecting element via a ball-and-socket connection. Rotation of the threaded shaft imparts a translational movement of the connecting element along the threaded shaft to move the movable window panel between the opened and closed positions.

Abstract: An enclosure system including a frame to be fastened to a base including a plurality of panels including at least a pair of side panels and a front panel, wherein a height and width of each panel is adjustable to fit the base wherein the front panel includes a plurality of sliding doors, wherein each of the sliding doors moves along a respective designated track, wherein the front panel includes a first locking mechanism configured to allow each of the sliding doors to be locked in a locked position and allow each of the sliding doors to slide out of the frame in an open position, wherein each of the tracks includes a respective moveable section to allow each of the sliding doors to be removed or installed when the respective moveable section in an extended position.

Abstract: In some embodiments, a stiffener system is arranged for attachment to a ladder. A first stiffener comprises a first arm and a first cable. The first arm is attached to a first rail of a ladder. The first cable is attached to the first rail at a first cable upper attachment location, extends to contact the first arm and extends to attach to the first rail at a first cable lower attachment location. The first arm is oriented at a non-zero angle to an orthogonal axis of the ladder.

Abstract: A foldable rail for an electric opening-closing curtain incorporates a first rail provided with opposed first end and second end; the first end is connected to a primary transmission box; a first joint is sleeved on the second end; a second rail provided with opposed third end and fourth end; the third end is connected to a secondary transmission box; a second joint is sleeved on the fourth end; a connection piece connected to the first joint and the second joint that can rotate relative to the connection piece; a transmission component, one end of which connected to the primary transmission box and the other end to the secondary transmission box both in a winding way; the transmission component runs through the first rail, the first joint, the second joint and the second rail in sequence from the primary transmission box to the secondary transmission box.

Abstract: A material handling lift including safety features for reducing the risk of injury to a user. The features may include one or more of: a roller shade for covering components of a mast, a scanner for detecting people in a protected area of the lift, a fan for preventing accumulation of dust on the scanner, spacers between a lift platform and a side guard panel, perforated side guard panels to allow viewing of a space under the lift, entrance guards to keep people away from the side and front of the lift, a power unit with dual redundant locking valves, and tamper-resistant fasteners for fastening a rear panel to a mast.

Abstract: A window blind, wherein each ladder tape thereof includes two longitudinal cords, plural bearers and plural limiting members. The longitudinal cords each have an end connected to a deflecting mechanism disposed on the upper rail. The bearers are disposed between the two longitudinal cords for respectively supporting the slats. The limiting members include a first limiting member and a second limiting member neighboring thereto. The first limiting member has an end disposed on one of the longitudinal cords and includes a first slat-through portion located between two ends thereof passing through a first through hole of a first slat. A first linking loop is formed after the first slat-through portion passes through the first through hole. The second limiting member passes through the first linking loop for keeping the first through hole threaded through by one of the first limiting member and the second limiting member.

Abstract: A force damper arranged to progressively arrest a first force imparted by an object moving in a first direction is disclosed. The force damper includes a housing enclosure having a first housing end and a second housing end. The first housing end includes a first connection point, and the second housing end includes an opening. A driving member is disposed within the housing enclosure and includes a first shaft end, a second shaft end, and a shaft therebetween. The first shaft end includes a stop and the second shaft end includes a second connection point. A compressible member is disposed within the housing enclosure between the stop and the opening. The compressible member is formed from a material that at least partially undergoes plastic deformation when the first force is arrested and imparts a second force on the stop toward first housing end.

Abstract: A pressing device has a roller part, a control part and a fastening part. The pressing device can be mounted to a leaf of a window or door. The roller part is movable in the mounted state of the pressing device, in particular, vertically relative to the control part. The control part is movable horizontally to the fastening part in a positively controlled manner. A spring element is provided between the control part and the roller part in order to subject the roller part, in addition to the force of gravity, to a downwardly directed spring force, i.e., towards the running rail.

Abstract: An awning is provided that includes an extendable arm, a shelter member, and a joint. The extendable arm has an inner end coupled with a support and an outer end extendable away from the inner end. The shelter member has an outer portion coupled with the extendable arm support and disposed along the extendable arm. The joint has a mechanism responsive to an awning retraction force to raise outer portions of the extendable arms and an outer portion of the shelter member toward a horizontal orientation relative to a shade enhancing orientation.

Abstract: The disclosure relates to portable staircases having a staircase assembly including an outer staircase and an inner staircase that can move in a telescoping relationship with respect to the outer staircase. Portable staircases of the disclosure are particularly useful for accessing an oil drilling rig as they are independently supported with respect to the drilling rig, thus providing numerous safety improvements and advantages. Methods of using the portable staircases of the disclosure are also disclosed.

Abstract: An opening/closing device for a vehicle sliding-window panel, includes a sliding-window panel opening and closing an opening part provided in a vehicle body, upper and lower guide rails to support the sliding-window panel to slide, and a slide driving mechanism fixed to one guide rail either the upper or lower guide rail. The slide driving mechanism includes a motor, a lead screw rotated by driving the motor, and a screw nut which is screwed with the lead screw to linearly move in a longitudinal direction of the one guide rail by rotation of the lead screw and is coupled with the sliding-window panel to operate the sliding-window panel to open and close by the linear movement. The one guide rail is integrally formed with a first and second supporting portions which rotatably support both end portions of the lead screw respectively.

Abstract: Systems, methods, devices, and computer-readable media for lanyard detection applications. A lanyard attachment assembly may include a moveable element configured to be displaced in response to attachment of a lanyard device such that one or more sensors detect the attachment. In response to one or more operator inputs, an alert may be generated if determined that a lanyard device is not attached.

Abstract: A toe space module for elevating platforms, wherein the module wraps around the edges and bottom of the platform in order to transform tension stress into shear and compression stresses. Also, a platform with a toe space module attached, and method for manufacturing the platform and toe space module. Also, a combination toe space module and step, a platform with the combination toe space module and step, and methods for manufacturing the platform with the combination toe space module and step.

Abstract: An external drum brake anti-falling device includes a carrier having an accommodating chamber and a main shaft crossingly arranged in the accommodating chamber for supporting a rotating drum to autorotate, wherein the rotating drum has a life belt coiled thereon, a brake unit arranged at an end thereof, and a drum brake module, which includes a base, mounted in the accommodating chamber, and a passive ring, mounted on the base. The base has a through hole axially and penetratingly arranged thereon and a slit communicating an inside and outside of said through hole. The wall surface of the through hole is a first ring surface. An outer diameter of the passive ring is a second ring surface. The passive ring has internally ratchet teeth arranged therein. when the life belt drives the brake unit to be engaged with the ratchet teeth, thereby buffering the rotating drum and the life belt.