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76 results about "Collapse mode" patented technology

Method of improving the functionality of pole mounted electrical producing or consuming panels

Current pole/mast mounted photovoltaic systems rely on gravity to lower the panel down the mast. The energy derived is typically conducted along a coiled conductor that expands or collapses like a spring inside the hollow mast as the movable device, with the solar panel attached, is raised or lowered for maintenance. Due to the large size and stiffness of the coiled conductor, especially in cold weather, the weight of the movable device may not be sufficient to cause the panel to descend when tension on the supporting cable is released. We have developed a method of pulling the sleeve/ring down the mast/pole as well as up. Over long periods of non-use, the sleeve can freeze in position. This new system aids in freeing it up and is also useful when there is un-even side loading on the sleeve. A winch driven chain or cable, attached to the movable device, extending upward to a top roller then internally downward to the winch and then externally extending back up to the movable device, accomplishes this task. A further improvement is a plurality of vertical guide wires and guides attached to the conductor coils that prevent the coils from overlapping in the collapsing mode. An additional improvement is taught wherein the coiled conductor is replaced by a set of conducting rails with a shorter conductor attached to the solar panel.
Owner:MILLER KEVIN L

Motorized beach cart

A motorized cart, including: a collapsible frame; a handle and a collapsible storage compartment connected to the frame; and at least three wheels, including a front wheel and two rear wheels disposed at a rear of the frame for rotating about a single axis. The cart also includes a drive compartment housing a battery, a drive controller, and at least one motor electrically connected to the battery and the drive controller for driving at least one of the rear wheels. The drive compartment is positioned on the frame to position the battery, the drive controller, and the motor below and forward of the rear wheel rotation axis when the cart is in an expanded, upright mode, thereby positioning a center of gravity of the cart forward of the rear wheel rotation axis to enhance stability. The drive compartment is shaped and positioned on the frame to not impede the collapsing of the storage compartment and the frame to a collapsed mode for compact storage of the cart, and to provide clearance for the at least one front wheel during transition between the collapsed mode and the expanded, upright mode. The drive compartment is positioned on the frame to substantially vertically align the center of gravity of the cart with the rear wheel rotation axis in a tilted mode, in which the cart operates only on the two rear wheels.
Owner:ANASIEWICZ STEPHEN A

Stable high efficiency multiple wavelength laser sources

In a stabilized laser system, an output of a desired wavelength is generated. Each of a plurality of n lasers, which, while emitting light and having a preselected portion thereof fed back thereto, causes the fed back portion to be amplified and shifted in wavelength in a first direction which is spaced apart from the center wavelength of the feedback signal. A feedback stabilization arrangement is coupled to output ports of the plurality of n lasers for generating a feedback signal having a wavelength spectrum peaking at a wavelength shifted in an opposite direction to the first direction generated by the lasers in response to the feedback signal so as to provide an output signal at the output of the stabilized laser system having a wavelength spectrum that peaks essentially at the desired wavelength. A reflector is located at a predetermined signal round-trip time delay distance from the feedback stabilization arrangement. The reflector receives the output signal from the feedback stabilization arrangement and passes a first portion thereof therethrough, and reflects a remaining second portion back to the feedback stabilization arrangement as a secondary feedback signal that contributes to each of the plurality of n laser sources being set in a stable coherence collapse mode.
Owner:JDS UNIPHASE CORP +1

Rock stratum bidirectional displacement monitoring device and monitoring method

The invention relates to a rock stratum bidirectional displacement monitoring device which comprises an anchor head and a reading device. The reading device comprises a first spring, a second spring and scales for monitoring stretching quantities of the first spring and the second spring, wherein the first spring and the second spring do not interfere with each other. The anchor head is connected with a first lead connected with the movable end of the first spring; the first lead is provided with a friction buckle; a friction pair is formed by the friction buckle and the first lead; and the friction buckle is connected with a second lead connected with the movable end of the second spring. The invention also relates to a rock stratum bidirectional displacement monitoring method. According to the invention, by simulating the stretching quantity of the first spring, a total displacement generated by a positive displacement of a abscission layer of a rock stratum and a squeezing density negative displacement is monitored; by simulating the stretching quantity of the second spring, a negative displacement of the rock stratum is monitored; the technical difficult problem that a mechanical displacement monitoring device can only be used for monitoring a unidirectional displacement is broken through; and the rock stratum bidirectional displacement monitoring device and the rock stratum bidirectional displacement monitoring method are simple and convenient to implement, provide accurate and reliable field data for analysis on the activity rhythm, the collapse mode and the like of the rock stratum and have good popularization and application prospects. The rock stratum bidirectional displacement monitoring device and the rock stratum bidirectional displacement monitoring method can be applied to geotechnical engineering.
Owner:GUANGDONG HONGDA BLASTING
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