Class / Patent application number | Description | Number of patent applications / Date published |
182101000 | LADDER WITH VERTICALLY MOVING PLATFORM OR ESCAPE | 7 |
20090152045 | MOBILE MOUNT FOR ATTACHMENT OF A FALL ARREST SYSTEM - A mobile mount for attachment of a fall arrest system. The mobile mount includes a mobile base, a support, at least one base, at least one arm and at least one anchor. The mobile base has a first side and a second side. The support extends upward from proximate the first side of the mobile base. The support also has a first end coupled to the mobile base and a second end. The at least one brace is coupled between the support and the mobile base to maintain the support in an upward position in relation to the mobile base. The at least one brace is slideably coupled to the mobile base. The at least one arm assembly is coupled to the second end of the support and extends from the support so as to be cantilevered over the mobile base. The at least one anchor is configured to be attached to the fall arrest system. Moreover, the at least one anchor is coupled to the at least one arm assembly. | 06-18-2009 |
182102000 | Ladder supports platform | 6 |
20130068559 | Cargo Lifting Device For A Ladder - A cargo lifting apparatus for use with a ladder includes a lift track coupled to each ladder side rail. Each lift track includes first and second adjacent channels, the first channel defining a longitudinal slot. The apparatus includes a carrier assembly having a back portion, a pair of support members extending perpendicularly and forwardly from the back portion, opposed mounting members configured to be received in a respective first channel slot, and rollers attached to the back portion configured to bear against respective ladder side rails. A motor/brake combination is coupled to a lower rung of the ladder. A pulley assembly includes a lower sprocket operatively coupled to the motor, an upper sprocket, and a cord extending between the sprockets and coupled to the carrier assembly for selectively raising and lowering the carrier assembly when the motor is activated or deactivated. | 03-21-2013 |
20140020978 | GUARDRAIL FOR AN ELEVATED WORKING PLATFORM - A collapsible structure is described that can be erected to provide an elevated working platform having two ends and two sides. Two telescopically collapsible ladder frames ( | 01-23-2014 |
182103000 | Stile or prop-guided carriage | 4 |
20140124293 | RACK AND ROLLER PINION LIFT SYSTEM - A lift system comprising an elongated rack and a roller pinion drive system. A preferred version has two parallel rack with plurality of rungs extending horizontally between the racks to form a ladder. A plurality of spaced apart mounting brackets are configured for affixing the ladder vertically to a stationary member, the stationary member not forming part of the invention. In this version, a drive unit retained within a carriage is mounted in proximity to the racks. The drive unit interacts with the racks to move the carriage upwardly and downwardly along the racks. A speed limiter is also disclosed that can be retained within the carriage below the drive unit and mounted in proximity to one of the racks. The speed limiter interacts with the rack to produce a breaking action if the drive unit fails, preventing the carriage to drop down quickly. Single rack and inclined rack versions are disclosed as alternatives. | 05-08-2014 |
20140246271 | EXTENSION LADDER INCORPORATING A WINCH-OPERATED ELEVATOR - A conventional extension ladder modified to incorporate a foldable-platform-equipped trolley that can be raised and lowered with an electrically-powered winch. An open-channel guide rail is secured to each side of each section of the extension ladder, the guide rails extending the entire length of each section. Each side of the trolley is equipped with upper and lower sets of rotatable guide wheels. Each set comprises three guide wheels in stacked alignment. The trolley always runs on at least one pair of guide rails on opposite sides of the ladder, and may be running on both pairs of guide rails when it is positioned in the region of ladder section overlap. The trolley is equipped with upright posts to which a hand rail is secured. Extendable standards on the ladder base provide additional stability, and a pair of large wheels enhance ladder mobility. | 09-04-2014 |
20150060200 | LADDER LIFT - A ladder lift is provided. The ladder lift may include a foldable platform, a frame, a motorized gear mechanism, a gear channel and a toggle switch. The gear channel may extend upwardly from a supporting surface along the length of the frame. The gear channel may house a belt track extending along the length of the gear channel. The foldable platform may be rigidly connected to the motorized gear mechanism. The motorized gear mechanism may selectively engage the belt track for causing the foldable platform to move in a specified direction along the length of the gear channel. The toggle switch may be used to engage and disengage the motorized gear mechanism. The frame may support the gear channel, the foldable platform, the motorized gear mechanism and a user. The user may be accommodated on the foldable platform. Then the user may activate the toggle switch so that the foldable platform moves in a specified direction along the length of the gear channel for a predetermined distance. | 03-05-2015 |
20150300090 | LADDER LIFT SYSTEM - A manually-powered, adaptive ladder lift system for hoisting objects along a ladder to a predetermined height is provided. The ladder lift system may include a stop assembly, a trolley assembly, and a headstock assembly adapted to engage the ladder, whereby the trolley assembly rolls along the side rails of the ladder between the headstock assembly mounted to the top of the ladder and the stop assembly mounted to a lower portion thereof. The headstock assembly is adapted to various types and sizes of ladders. The stop assembly is adapted to retain the trolley assembly at the predetermined height anywhere between the stop assembly and the headstock assembly. | 10-22-2015 |