Abstract: A pallet truck wheel guard assembly is configured for use on a pallet truck of a type having a spaced pair of rear steer wheels rotatable about an axle residing and steerable within a horizontal plane relative to said pallet truck. The wheel guard assembly comprises a shroud having a width approximately equal to or larger than a spacing between rear steer wheels of a pallet truck. One or more connectors are configured to fixedly attach the shroud only to an axle between the steer wheels of the pallet truck, wherein the shroud is fixed relative to the steer wheels such that a spacing between a bottom edge of shroud and a floor level upon which the steer wheels rest is sufficiently narrow so as to prevent extremities from slipping beneath the shroud and be caught under the pallet jack wheels.

Abstract: A pallet truck wheel assembly for use on a pallet truck comprises an axle extending in a horizontal plane that includes a central portion configured to couple with a steering column of a pallet truck and shoulders at each terminal end of the axle. A pair of rear steer wheels having center bores receiving and rotatable about the axle are mounted on the axle in a spaced-apart configuration so that a central portion of the axle spaces the wheels apart between inboard portions of the steer wheels and the shoulders are exposed on each outboard portion of the steer wheels. A toe guard coupled only to the shoulders of the axle includes a protective element that extends around the back of the wheels and below the axle so that an operator's toes are prevented from sliding under the rear steer wheels of the pallet truck.

Abstract: A system for tracking a location of a movable object can include a tracking device mounted to a collar. The tracking device can be configured to track its location using at least one of a global positioning system signal, a Bluetooth signal, and a Wi-Fi signal. The system can include a middle man charging mechanism. The middle man charging mechanism can be configured to receive electrical energy from a base station charging device. The middle man charging mechanism can be configured to store the received electrical energy. The middle man charging mechanism can be configured to couple to an external charging interface of the tracking device to recharge the battery included in the tracking device while the collar is worn by the movable object. The tracking device can also be configured to transmit information corresponding to the location of the tracking device to an external computing device.

Abstract: A wearable personal tracking device that can communicate over a cellular network. The device includes a wrist mounted part, having a wristband and a clasp which holds the wristband on to the wrist of a user. The band is remotely lockable, and also creates an alarm when opened while in a specified mode. The housing holds a position detecting part which detects the position of a user who is wearing said wrist mounted part, and a cellular transceiving part which communicates information including said information via the cellular network, e.g., via G3 cellular internet connectivity. The remote monitoring node can receive the latch alarm, and can also create a remote locking command, based on conditions.

Abstract: A wearable personal tracking device that can communicate over a cellular network. The device includes a wrist mounted part, having a wristband and a clasp which holds the wristband on to the wrist of a user. The housing holds a position detecting part which detects the position of a user who is wearing said wrist mounted part, and a cellular transceiving part which communicates information including said information via the cellular network, e.g., via G3 cellular internet connectivity. The device automatically produces an alarm based on a position of the user when in a monitoring mode.

Abstract: A multilayer antenna structure configured to receive Global Navigation Satellite System (GNSS) and augmentation signals. The antenna includes a microstrip patch radiation element disposed at a top layer and a ground plane forming a first interior layer, the ground plane including at least two coupling apertures, and the ground plane isolated from said radiation element by a low loss dielectric. The antenna structure also includes a bottom layer, the bottom layer is isolated from the ground plane by another dielectric; at least two feed lines operably connected to a hybrid coupler disposed on the bottom layer; and an active circuit on the bottom layer, a first port of said active circuit operably connected to the hybrid coupler.

Abstract: A sensor system for vehicle steering control comprising: a plurality of global navigation satellite sensor systems (GNSS) including receivers and antennas at a fixed spacing to determine a vehicle position, velocity and at least one of a heading angle, a pitch angle and a roll angle based on carrier phase corrected real time kinematic (RTK) position differences. The roll angle facilitates correction of the lateral motion induced position errors resultant from motion of the antennae as the vehicle moves based on an offset to ground and the roll angle. The system also includes a control system configured to receive the vehicle position, heading, and at least one of roll and pitch, and configured to generate a steering command to a vehicle steering system.

Abstract: A method and system for local computation of information to improve accuracy in a differential Global Navigation Satellite Systems (GNSS). The method comprising: determining a current location of a reference receiver; comparing the current location with at least one stored location; if a resultant of the comparing is less than a selected threshold, identifying as a reference location the at least one stored location, which is closest to the current location; otherwise establishing the current location as the reference location and storing the current location. The method also includes computing the information from signals from one or more GNSS satellites the based on the reference location; and transmitting the information for reception by one or more remote receivers.

Abstract: A method and system for reducing Global Navigation Satellite System (GNSS) carrier tracking loop ambiguities comprising: receiving a plurality of GNSS satellite signals with a first antenna in operable communication with a first tracking device and a second antenna in communication with a second tracking device in at least one GNSS receiver; and sharing of data between the first tracking device and the second tracking device. The sharing is configured to facilitate a commonality in a carrier phase derived in the first and second tracking devices. The sharing also results in a cancellation of the commonality when a difference phase is formed between a carrier phase from the first tracking device and a carrier phase from the second tracking device.

Abstract: A mounting apparatus for a radio frequency identification system is disclosed. The mounting apparatus includes a base and a frame. The frame has an upper section that is adjustable relative to the lower section to provide different configurations such as heights, and capable of being separated into two or more of its component parts to facilitate storage, shipping (particularly shipping via commercial carriers such as UPS that have maximum container sizes and/or configurations), break down, mobility, adjustability, and the like. A translucent or transparent cover encloses the frame and RFID components to all visual access to the components therein. A system comprising two portals connected by bridge having an adjustable bridge.