RS Drawings, LLC Patent applications |
Patent application number | Title | Published |
20130317705 | METHOD AND APPARATUS FOR SELECTIVELY ACTIVATED POWERED ACTUATION OF A HYDRAULIC DRIVE SYSTEM - A method and apparatus for selectively activating a gravity down mode of a hydraulic system during operation of a lift gate. An electronic control circuit is added to hydraulic control circuitry and is configured to selectively interrupt the power down mode or gravity down mode of operation of the hydraulic system based on either a manual input (override) or a sensed condition and switch to the other mode of operation. | 11-28-2013 |
20130004276 | LIFTGATE AND MOUNTING BRACKET SYSTEM - The present invention provides a method and system of installing a liftgate under a vehicle bed. In one implementation, the system includes a liftgate and a mounting device. The mounting device comprises at least one mounting bracket having a group of multiple substantially horizontal slots vertically stacked relative to one another so as to be at different heights relative to ground when the bracket is installed under a vehicle bed essentially parallel to ground. The slots are vertically spaced on the bracket relative to one another to accommodate different vehicle bed heights so as to maintain the liftgate within a desired vertical ground clearance when mounted in a slot on said bracket under a vehicle bed. | 01-03-2013 |
20120218092 | WIRELESS LIFT GATE CONTROL SYSTEM INCLUDING AUTHORIZATION OF OPERATOR - A lift gate system is provided which in one implementation has a lift gate assembly including an actuator for actuating a lift gate, a main controller configured for controlling the actuator, and a wireless transceiver for receiving an operation command. The system further has a wireless controller including an authorization controller configured for checking that an operator is authorized to operate the lift gate, the wireless controller configured such that upon authorization of the operator by the authorization controller, the wireless controller may wirelessly transmit an operator command to the main controller for controlling operation of the lift gate accordingly. | 08-30-2012 |
20120200114 | HEADER SYSTEM FOR LIFT GATES - A header assembly useful with a columnar lift gate is provided. In one embodiment, the header assembly includes an elongated header element having a top wall with distal ends, the top wall having an upwardly protruding edge portion extending between the distal ends. The header element is configured for horizontal coupling to an upper edge of a vehicle opening. The header assembly further comprises a pair of columnar sleeves, each columnar sleeve configured for transverse connection proximate a distal end of the header element. The columnar sleeves are configured for coupling along side edges of the vehicle opening in parallel to one another and perpendicular to the header element. Each columnar sleeve is configured for receiving an upper portion of a lifting column of a columnar lift gate mounted at said vehicle opening, each lifting column mounted to a side edge of the vehicle opening under a respective columnar sleeve. | 08-09-2012 |
20120126562 | MODULAR EXTENSION PLATE KIT FOR LIFTGATES - The present invention provides a modular extension device and method for mounting the modular extension device on a vehicle, such as a truck. The modular extension plate device comprises an extension plate, a left extender bracket, and potentially a right extender bracket, that when coupled together form an extension assembly. The extension plate further comprises an elongated rectangular plate having an essentially L-shaped profile, a left substantially triangle-shaped support member, a right substantially triangle-shaped support member, a left essentially L-shaped support member and a right essentially L-shaped support member. The modular extension assembly can be coupled adjacent to the rear edge of a vehicle bed for extending the depth of the vehicle bed. | 05-24-2012 |
20110072811 | ENGINE DRIVEN LIFT GATE POWER SYSTEM - A power system for a lift gate is provided. The power system includes an actuator system including an actuator for a lift gate, and a lift gate engine coupled to the actuator system. The lift gate engine is configured for generating kinetic energy from a fuel source to power the actuator system for operating the lift gate. | 03-31-2011 |
20100313479 | LIFTGATE AND MOUNTING BRACKET SYSTEM - The present invention provides a method and system of installing a liftgate under a vehicle bed. In one implementation, the system includes a liftgate and a mounting device. The mounting device comprises at least one mounting bracket having a group of multiple substantially horizontal slots vertically stacked relative to one another so as to be at different heights relative to ground when the bracket is installed under a vehicle bed essentially parallel to ground. The slots are vertically spaced on the bracket relative to one another to accommodate different vehicle bed heights so as to maintain the liftgate within a desired vertical ground clearance when mounted in a slot on said bracket under a vehicle bed. | 12-16-2010 |
20100293611 | WIRELESS LIFT GATE CONTROL SYSTEM - A lift gate system is provided which in one implementation has a lift gate assembly including an actuator for actuating a lift gate, a main controller configured for controlling the actuator, and a wireless transceiver for receiving an operation command. The system further has a wireless controller including an authorization controller configured for checking that an operator is authorized to operate the lift gate, the wireless controller configured such that upon authorization of the operator by the authorization controller, the wireless controller may wirelessly transmit an operator command to the main controller for controlling operation of the lift gate accordingly. | 11-18-2010 |