摘要:
A system (20) for determining and optimizing wireless network performance of a network having at least two access points (22A, 22B) comprises a plurality of wireless instruments (26) configured to send, receive, and measure received wireless signals in a monitored area (24). The system further comprises a master controller (28) in communication with the wireless instruments (26) to form a distributed wireless network testing solution. The master controller (28) is configured to send wireless signals to and receive wireless signals from the wireless instruments (26), measure the received wireless signals, and perform an analysis of the wireless signals to determine a radio frequency environment performance of the distributed wireless network based at least in part on the wireless signals.
摘要:
A cable feeder for feeding cables through a structure according to some embodiments of the disclosure includes a housing having a drive roller attached thereto, and idler roller assembly attached to the housing. In an embodiment, the idler roller assembly can be released from the housing to allow cable to be released from the cable feeder. In an embodiment, the housing is formed from upper and lower housings, and the position of the lower housing and idler roller assembly can be adjusted relative to the upper housing and drive roller.
摘要:
A tool formed of a cable stripper and an associated cutting assembly is used for stripping a cable. Differently sized cutting assemblies can be easily and quickly mounted to and disassembled from the cable stripper. The cable stripper includes a depth stop assembly for setting the amount of cable seated within the cable stripper so that the cutting assembly is positioned in the desired position. The cable stripper include a one-way bearing which only allows the user to use the cable stripper in the intended direction.
摘要:
The present invention provides a circuit for performing a stress test on a paired line. The circuit provides for first and second balanced outlet pathways for applying an AC signals to the paired line. Although each of these first and second balanced outlet pathways include balanced capacitors, the need to vet these capacitors in order to achieve proper operation of the circuit is eliminated.
摘要:
An embodiment of a spade bit (100) has straight grooves (128) at a lead angle (α) of 4 to 8 degrees placed on flat edges of the spade bit. In an alternative embodiment, a spade bit (200) has two steps (232a,232b) of straight grooves (228) at a lead angle (α) of 4 to 8 degrees placed on flat edges of the spade bit. In other alternative embodiments, a spade bit (300) has tapered flat edge which have straight grooves (328) at a lead angle (α) of 4 to 8 degrees placed thereon. The straight grooves on the flat edges of the spade bit allows the spade bit to pull itself through the workpiece with a minimal amount of penetration. The flat edges of the spade bit may also have cutting surfaces for cleaning the hole and permitting the easy removal of the spade bit from the hole after drilling.
摘要:
A rotary cutting device (20) for cutting holes in a workpiece and a method of making a rotary cutting device (20). The method includes machining a notch (42) across a face (72) of a generally cylindrical body (22). The body (22) has a longitudinally extending central axis (24) and a central bore (26) formed concentric therewith. Machining the notch (42) forms at least one generally arcuate protrusion (74) on the face (72) of the body (22). A slot (60) is formed through each of the protrusions (74) resulting in two teeth (38) being formed on either side of the slots (60). A cutting tooth (38) and a stabilizing tooth (40) are formed on each side of the mouth of each slot (60) formed in the body (22). The cutting tooth (38) removes material from a workpiece and the stabilizing tooth (40) limits the feed rate and prevents grabbing when a rotary motion is applied thereto.
摘要:
A device is used to sever an electrical power cable for the transmission of high voltage. The cable has an insulation sheath, a screening layer and a conductive layer. The device includes a first frame having a first cutting blade mounted thereon, a second frame, and a measuring device mounted on the second frame. The first cutting blade is movable relative to the measuring device. The measuring device is capable of measuring an electrical load on the electrical power cable and capable of terminating the severing of the electrical power cable. A method of using the device is also provided.
摘要:
An assembly is provided for forming holes in a workpiece. The assembly includes an arbor (24), a pin sleeve (30) and a cutting device (22). The arbor (24) has a nose (40) having at least one threaded portion (62a, 62b) and at least one unthreaded portions (64a, 64b) on an external surface thereof. The arbor (24) also has at least one pin passageway (56a, 56b) extending therethrough. The pin sleeve (30) has at least one pin (74a, 74b) extending from a main body (72). The arbor (24) extends through the pin sleeve (30). The cutting device (22) has a back plate (96) and a plurality of teeth (100) extending therefrom. The back plate (96) has a passageway (98) defined by a wall with at least one threaded portion (102a, 102b) and at least one unthreaded portion (104a, 104b). The at least one threaded portion (102a, 102b) of the cutting device (22) is capable of engaging with the at least one threaded portion (62a, 62b) of the nose (40), and the at least one pin (74a, 74b) of the pin sleeve (30) is capable of engagement with the at least one pin passageway (56a, 56b) of the arbor (24) to secure the components together.
摘要:
A clamping assembly for driving a knockout punch is provided. The clamping assembly (120) has an outer member (130), an inner member (132), and wedges (134) that are guided by keyways (162) on the inner member (132). A user pushes onto the inner member (132), which causes the wedges (134) to contact a cam surface (144) on the outer member (130), which forces the wedges (134) in a radial inward direction until threads (164) provided on said wedges (134) clamp onto complimentary shaped threads (128a) on a draw stud (128).