Abstract: Systems, devices, and methods having a liftgate frame; a first bracket mount connected to a beam via one or more upper actuators and two or more upper linkages, the two or more upper linkages pivotally mounted between the first bracket mount and the liftgate frame, and where the first bracket mount is configured to move from a first stowed position under the liftgate frame to a second engage position via the one or more upper actuators and the two or more upper linkages; a second bracket mount connected to the beam; a third bracket mount connected to second bracket mount via one or more lower actuators and two or more lower linkages, the two or more lower linkages pivotally mounted between the second bracket mount and the third bracket mount; and a lift platform connected to the third bracket mount, where the lift platform is configured to move from an up position to a down position positioned selectively relative to an external surface; where the first bracket mount moves in an arcuate path from the first st

Abstract: Systems, methods, and devices for correcting a mounting system for mounting a lift gate on a structure, the lift gate having a lift platform supported between a pair of spaced support columns, the correction system including: a first mounting member configured for attachment onto the structure; a first lift gate support column configured for attachment onto the first mounting member; a first correction mechanism configured to couple with a first support block, where the first correction mechanism creates a force between the first lift gate support column and the first mounting member when engaged, resulting in a first corrective gap forming between the first lift gate support column and the first mounting member; and where the resulting corrective gap orients the first lift gate support column to be substantially parallel with a plane parallel to a rear of the structure such that the lift gate platform can be operated.

Abstract: A mounting system for mounting a lift gate on a structure is provided, the lift gate having a lift platform supported between a pair of spaced support columns. The mounting system comprises a first mounting member configured for attachment onto said structure, wherein the first mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. The mounting system further comprises a second mounting member configured for attachment onto said structure, wherein the second mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. When the mounting members are attached to the structure and the corresponding lift gate support columns are mounted on the support protrusions, the mounting members support the lift gate on the structure.

Abstract: Systems, methods, and devices for correcting a mounting system for mounting a lift gate on a structure, the lift gate having a lift platform supported between a pair of spaced support columns, the correction system including: a first mounting member configured for attachment onto the structure; a first lift gate support column configured for attachment onto the first mounting member; a first correction mechanism configured to couple with a first support block, where the first correction mechanism creates a force between the first lift gate support column and the first mounting member when engaged, resulting in a first corrective gap forming between the first lift gate support column and the first mounting member; and where the resulting corrective gap orients the first lift gate support column to be substantially parallel with a plane parallel to a rear of the structure such that the lift gate platform can be operated.

Abstract: A mounting system for mounting a lift gate on a structure is provided, the lift gate having a lift platform supported between a pair of spaced support columns. The mounting system comprises a first mounting member configured for attachment onto said structure, wherein the first mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. The mounting system further comprises a second mounting member configured for attachment onto said structure, wherein the second mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. When the mounting members are attached to the structure and the corresponding lift gate support columns are mounted on the support protrusions, the mounting members support the lift gate on the structure.

Abstract: A mounting system for mounting a lift gate on a structure is provided, the lift gate having a lift platform supported between a pair of spaced support columns. The mounting system comprises a first mounting member configured for attachment onto said structure, wherein the first mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. The mounting system further comprises a second mounting member configured for attachment onto said structure, wherein the second mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. When the mounting members are attached to the structure and the corresponding lift gate support columns are mounted on the support protrusions, the mounting members support the lift gate on the structure.

Abstract: A mounting system for mounting a lift gate on a structure is provided, the lift gate having a lift platform supported between a pair of spaced support columns. The mounting system comprises a first mounting member configured for attachment onto said structure, wherein the first mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. The mounting system further comprises a second mounting member configured for attachment onto said structure, wherein the second mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. When the mounting members are attached to the structure and the corresponding lift gate support columns are mounted on the support protrusions, the mounting members support the lift gate on the structure.

Abstract: A controller for a lift, includes a communication module configured to wirelessly transmit data relating to the personnel operating and operating conditions of a lift to a remotely located station. The remote station wirelessly sends satisfaction or non-satisfaction messages to the lift controller in response to received input data or sensed conditions relating to the operation of the lift. The lift controller includes circuitry for obtaining and/or storing the sensed conditions and received input data, where the communication module then transmits this information to a remote station using a wireless network either public or private depending on the desired application. In accordance with one implementation, the sensed conditions can include a lift state, a motion of the lift, a load applied to the lift, a lift temperature, a hydraulic fluid pressure, a wait time for recharging a hydraulic pump, an operator safety condition and a number of cycles of operation of the lift.

Abstract: A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.

Abstract: A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.

Abstract: The hydraulic pump control system enables the synchronization of two independently mounted hydraulic lifting cylinders in a lift gate environment. A directional valve is added to the hydraulic line path between the lift cylinders and their respective pumps and reservoir tank. By connecting two pumps to one motor, the synchronization of the pumps is enabled for power up operations of the lift, and through the additional application of the directional valves, the oil flow rate to the lift cylinders (e.g., during a power down operation) can be maintained as hydraulically identical, thus synchronizing the movement of each lift cylinder with respect to the other, even in the presence other outside conditions that would could otherwise cause a desynchronization of the lift cylinders.

Abstract: A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.

Abstract: 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.

Abstract: A controller for a lift, includes a communication module configured to transmit data (via wireless or wired connection) relating to the personnel operating and operating conditions of a lift to a remotely located station. The remote station wirelessly sends satisfaction or non-satisfaction messages to the lift controller in response to received input data or sensed conditions relating to the operation of the lift. The lift controller includes circuitry for obtaining and/or storing the sensed conditions and received input data, where the communication module then transmits this information in report form to a remote station using a wired or wireless network either public or private depending on the desired application.

Abstract: A controller for a lift, includes a communication module configured to wirelessly transmit data relating to the personnel operating and operating conditions of a lift to a remotely located station. The remote station wirelessly sends satisfaction or non-satisfaction messages to the lift controller in response to received input data or sensed conditions relating to the operation of the lift. The lift controller includes circuitry for obtaining and/or storing the sensed conditions and received input data, where the communication module then transmits this information to a remote station using a wireless network either public or private depending on the desired application. In accordance with one implementation, the sensed conditions can include a lift state, a motion of the lift, a load applied to the lift, a lift temperature, a hydraulic fluid pressure, a wait time for recharging a hydraulic pump, an operator safety condition and a number of cycles of operation of the lift.

Abstract: A lift suitable for use with vehicles is described. The lift allows access to a ramp stored under the vehicle, while preventing unauthorized use of the lift.