39results about How to "Small size and structure" patented technology

The combined food cooking device exhibits at least one upper cooking top (2), a lower cooking top (3), heating means for the upper (2) and lower (3) cooking tops, and exhibits a structure switching from a reduced overall dimensions configuration wherein the upper cooking top (2) is adjacent the device base (10) and at least one usage configuration wherein the upper cooking top (2) is far away from the device base (10).

The invention relates to a deep sea valve executing mechanism with a bidirectional pressure dynamic balance compensation device. The deep sea valve executing mechanism comprises an executing mechanism, a piston type pressure balance compensator and a valve connecting component, wherein the piston type pressure balance compensator is positioned at the outer side of the executing mechanism and is connected with the executing mechanism; the executing mechanism is connected with an underwater valve through the valve connecting component; the executing mechanism comprises an executing mechanism shell, a hydraulic cylinder end cover, a piston rod, a transmission shaft sleeve, a spring seat and a plurality of springs; the piston type pressure balance compensator comprises a pressure balancer shell; one side of the pressure balancer shell is provided with a filter end cover; the other side of the pressure balancer shell is connected with the executing mechanism through a connecting shaft; a piston is arranged in the pressure balancer shell; the pressure balancer shell is divided into a dynamic balance cavity and a seawater compensation cavity by the piston. According to the deep sea valve executing mechanism disclosed by the invention, inner and outer pressure and working volume of the executing mechanism of the underwater valve can be effectively balanced and compensated, the structure is simple, the cost is low, and the deep sea valve executing mechanism can be widely applied to the field of deep sea valve control.

The invention discloses a phase shifter transmission device, which includes a power mechanism, at least one drive rod, multiple sets of transmission components and at least one row of phase shifters, the power mechanism is connected with the drive rod to drive the drive rod to rotate; each set of transmission components They are all connected to the driving rod, and multiple sets of transmission components are distributed along the axial direction of the driving rod, and rotate synchronously under the drive of the driving rod; each row of phase shifters includes multiple phase shifters distributed along the axial direction of the driving rod, and one row of phase shifters Each phase shifter in the device is connected to a corresponding group of transmission components, and one or more rows of phase shifters are driven by multiple groups of transmission components to adjust the phase synchronously. The invention drives a plurality of phase shifters with fewer motors to synchronously adjust the phases of the plurality of phase shifters, thereby improving the phase adjustment accuracy and consistency of the phase shifters.

The invention discloses a linear polarization based fiber coupler and a manufacture method and usage thereof, relating to fields of micronano optics and polarization optics. The fiber coupler comprises a substrate and a silicon nano rod array, wherein the silicon nano rod array comprises multiple silicon nano rod units etched on the substrate, silicon nano rods in the same silicon nano rod unit have identical structural parameters, silicon nano rods of different silicon nano rod units are cuboids with different structural parameters, if incident light enters vertically, light with polarizationdirections along a long edge and a short edge of the silicon nano rod is reflected and projected, length, width and height of the silicon nano rod are configured to that phase delay of the silicon nano rod units is equal to phase distribution of a fiber mode after light conversion. The fiber coupler is small, has low insertion loss, is accurate in phase regulation, can switch two different kindsof linear polarization light of incident light to two different fiber modes, and makes optical devices less complex.