3601 results about "Ground contact" patented technology

An electrical connector according to the invention includes a linear contact array of electrically conductive contacts and a lead frame into which the contacts at least partially extend. The contacts may be selectively designated as either ground or signal contacts such that, in a first designation, the contacts form at least one differential signal pair comprising a pair of signal contacts, and, in a second designation, the contacts form at least one single-ended signal conductor.

An electrical connector system has two connectors, one of which is included in a module mateable with the other connector in a pluggable manner. The other connector includes an elongated guide rail and a connector block in which are retained two or more electrical contacts. Signal connections can be made in a predetermined sequence when the module is plugged into the other connector because the contact pads of the module are of different lengths. For example, sequencing the connection of power and ground signals with respect to data signals provides hot-pluggability. Also, a grounding contact on the module is engaged by a spring clip on the other connector to provide an additional or alternative grounding path.

An electric connector ensuring effective grounding contact includes coaxially arranged inner sleeve and outer sleeve and a conductive grounding element. The inner sleeve is adapted to receive a central conductor and an insulating spacer of a cable therein, and can be axially rearward moved from a first position to a second position, and the outer sleeve is adapted to receive a braided conductive grounding sheath and an insulating sheath of the cable therein. The conductive grounding element is externally immovably fitted around the inner sleeve. When a stripped free end of the cable is inserted into the connector and the cable is rearward pulled, the inner sleeve is simultaneously rearward moved from the first position to the second position, forcing the inner sleeve, the conductive grounding element, and a connecting ring coaxially mounted around the inner sleeve to electrically contact with one another.

A planner inverted-F antenna (PIFA) includes a ground plane, a rib-shaped radiation plate installed approximately in parallel with the ground plane, a feeding line installed on the rib-shaped radiation plate, a feeding contact installed on an end of the feeding line, and a ground contact electrically connected to the ground plane.

A class of transporters for carrying an individual over ground having a surface that may be irregular. Various embodiments have a motorized drive, mounted to the ground-contacting module that causes operation of the transporter in an operating position that is unstable with respect to tipping when the motorized drive arrangement is not powered. Related methods are provided for determining the maximum operating speed of the transporter from measurement of battery parameters and transporter motor current and for limiting the speed of the transporter to maintain stability.

An apparatus and method for transporting a payload over a surface is provided. A vehicle supports a payload with a support partially enclosed by an enclosure. Two laterally disposed ground-contacting elements are coupled to at least one of the enclosure or support. A motorized drive is coupled to the ground-contacting elements. A controller coupled to the drive governs the operation of the drive at least in response to the position of the center of gravity of the vehicle to dynamically control balancing of the vehicle.

An electrical connector includes a housing and a plurality of contact modules in the housing. Each contact module includes a mating edge and a mounting edge. Each mating and mounting edge has a row of contacts including signal and ground contacts arranged in one of a first and second pattern. Adjacent contact modules in the housing have a different one of the first and second patterns. The first and second patterns each include pairs of signal contacts and individual ground contacts arranged in an alternating sequence. Each mating edge contact is electrically connected to a corresponding mounting edge contact by signal conductors and ground conductors extending along a predetermined path within the contact module. Each ground conductor has a width transverse to the predetermined path that is substantially equal to a combined transverse width across a pair of signal conductors in an adjacent contact module. The ground conductor shields the pair of signal conductors in the adjacent contact module.

The invention provides a fracturing blender truck. The fracturing blender truck comprises a chassis, a sand blending device, a four-connecting-rod mechanism and a power system. The sand blending device is arranged above the chassis and provided with a sand blender, and a closed-type mixing pump serves as the sand blender. The four-connecting-rod mechanism is capable of driving the sand blending device to move to enable a base of the closed-type mixing pump to contact with the ground, a first connecting rod and a third connecting rod of the four-connecting-rod mechanism are arranged on the chassis rotatably, and the sand blending device is arranged on a second connecting rod of the four-connecting-rod mechanism. The power system arranged on the chassis is connected with the first connecting rod and drives the four-connecting-rod mechanism to rotate to enable the closed-type mixing pump to contact with the ground. The fracturing blender truck has the advantages that the closed-type mixing pump serves as the sand blender, and the second connecting rod of the four-connecting-rod mechanism is used for bearing the sand blending device to enable the base of the closed-type mixing pump to be capable of contacting with the ground, so that the height of the closed-type mixing pump is decreased, suction capacity of the closed-type mixing pump is improved, a great quantity of fracturing fluid can be guided out, delivery capacity of the fracturing blender truck is increased, and the requirements on large-scale fracturing operation can be met.

An electrical connector (1) includes an insulative housing (3) mounted onto a mother board, and a mulitiplicity of contact modules (7) received in the housing. The housing defines first and second openings (245, 246) in a front portion thereof. Each contact module includes first, second, third and fourth contacts (80, 82, 86, 88) and a ground contact (84). The first and second contacts are inserted into the first opening to form a first signal contact group, thereby providing a first mating interface for a daugher board. The third and fourth contacts are inserted into the second opening to form a second signal contact group, thereby providing a second mating interface for another daughter board. The ground contacts are disposed betweent the first and second signal contact groups. The connector can thereby electrically connect the daughter boards with the mother board simultaneously.

An electrical interconnection system with high speed, high density electrical connectors. One of the connectors includes a mating contact portion that generates contact force as it is compressed against a wall of the connector housing. The mating contact portion has multiple segments, each with a contact region extending from the wall, such that multiple points of contact to a complementary mating contact portion in a mating connector are provided for mechanical robustness. Additionally, each signal path through the mating interface portions of the connectors can be narrow and has a relatively uniform cross section to provide a uniform impedance. Additional size reduction may be achieved by mounting a ground contact on an exterior surface of a connector housing in alternating rows. Additionally, embodiments in which a wavy contact is used in a cantilevered configuration are also described.

A controller and methods for controlling the speed of a vehicle having an electric motorized drive is provided. In one embodiment, a method involves determining a steady state average torque and a torque during acceleration or deceleration of the vehicle traveling over an underlying surface. Speed of the vehicle is controlled based on the steady state average torque, the torque during acceleration or deceleration the measured regeneration current generated by a motorized drive arrangement of the vehicle that applies torque to at least one ground-contacting element of the vehicle for traveling over the underlying surface, weight of the vehicle and payload, the torque applied to the ground-contacting element, acceleration of the vehicle and the speed of the vehicle.