120 results about "Free zone" patented technology

A linear generator apparatus includes first and second elongate coaxial bodies that are axially movable relative to one another with a reciprocating movement. The first body is axially and freely movable relative to the second body within a predetermined displacement range or free zone. A helical spring connecting to both first and second bodies biases the first body toward the free zone relative to the second body when outside of the free zone. An electrical power generator mounted on both first and second bodies generates power when the first and second bodies axially move relative to one another within the free zone and beyond. The invention also relates to a suspension system for motor vehicle that includes a coil spring and the apparatus in replacement of a conventional shock absorber.

The invention discloses a manufacturing method of a high-strength, high-modulus and low-shrinkage polyester industrial yarn. The manufacturing method comprises the processes of preparation of a highly viscous melt polyester raw material, metering, spinning, cooling, oil applying, drawing, heat shaping and winding formation; the cooling comprises slow cooling, precooling, cooling in an air free zone and air blast cooling in sequence; the precooling part uses a driven hollow-out successive annular strip. Through the introduction of a precooling device, irregularity caused by tow shaking due to move-down of a curing point of a fiber is reduced, the linear density deviation is controlled within a lower range, and orientation and crystallization of an as-spun fiber are reduced, so that the high-strength, high-modulus and low-shrinkage polyester industrial yarn is obtained; and the high-strength, high-modulus and low-shrinkage polyester industrial yarn has the advantages of high breaking tenacity, high initial modulus, low linear density deviation, low breaking elongation and lower dry-heat shrinkage rate and can be used for preferably satisfying requirements on application.

An asphalt shingle is provided, in which a base mat is impregnated with an asphalt material and has headlap and tab portions, with the tab portion being a plurality of tabs separated by slots, with adhesive applied to the top surface of the shingle in the headlap portion and above the upper ends of the slots, but wherein the headlap portion of the shingle has adhesive-free zones above the centers of the tabs.A roof covering is provided with the shingles being in overlying and underlying courses, with shingles in each course being laterally offset and with the adhesive-free zones being such that no adhesive on a shingle in an underlying course is visible through slots of shingles in a next-overlying course.The method of making the asphalt shingles includes applying a substrate to a layer of shingle-forming material, the substrate having indicators at predetermined spaced-apart distances, with the indicators being sensed as the shingle-forming layer is moved along a predetermined path, with adhesive zones being applied to the shingle such that the application of the adhesive zones is synchronized in response to sensing the locations of the indicators, and with the shingle-forming layer then being cut into individual shingles.

Semiconductor structures and devices including strained material layers having impurity-free zones, and methods for fabricating same. Certain regions of the strained material layers are kept free of impurities that can interdiffuse from adjacent portions of the semiconductor. When impurities are present in certain regions of the strained material layers, there is degradation in device performance. By employing semiconductor structures and devices (e.g., field effect transistors or “FETs”) that have the features described, or are fabricated in accordance with the steps described, device operation is enhanced.

The present disclosure is directed to systems and methods for proactively enforcing a wireless free zone over an enterprise's airspace using Open Systems Interconnect (OSI) layer one, two, and three based techniques. The systems and methods prevent wireless communications over IEEE 802.11 (WiFi), IEEE 802.16 (WiMax), and IEEE 802.15.1 (Bluetooth) networks to enable an enterprise to enforce compliance to a no-wireless policy. Smart antennas and coverage planning are included to avoid disrupting a neighbor's wireless communications. Further, the disclosed systems and methods can be combined into existing Wireless Intrusion Prevention Systems (WIPS) or in a stand-alone sensor and server configuration to offer proactive no-wireless zones.