摘要:
A plantation window shutter, comprises a frame and a plurality of shutter blades pivotably supported by the frame. The frame has a left stile, a right stile, a bottom rail connected to the left and right stiles and a top rail connected to the left and right stiles. The left stile comprises first and second members joined together, and the right stile third and fourth members joined together. The bottom rail includes first and second end portions sandwiched between the first and second members, and the third and fourth members, respectively. The top rail includes first and second end portions sandwiched between the first and second members, and the third and fourth members, respectively. The left and right stiles include top end portions operably attached to each other. The first and second members have opposing sides including a plurality of mirrored left grooves. The third and fourth members have opposing sides including a plurality of mirrored right grooves, the mirrored left grooves being axially aligned with respective the mirrored right grooves. Each of the shutter blades has a longitudinal pivotal axis and a left pivot and a right pivot aligned along the axis, the left pivot and the right pivot being received in respective one of the mirrored left grooves and the mirrored right grooves.
摘要:
A plantation window shutter comprises a frame and a plurality of shutter blades pivotably supported by the frame in a fan configuration. The frame comprises a front surface and a rear surface. The rear surface has a plurality of upper grooves and a plurality of lower grooves, each upper groove being axially aligned with a respective lower groove. Each of the shutter blades has a longitudinal pivotal axis and a top pivot and a bottom pivot aligned along the axis, the top pivot and the bottom pivot being received in respective upper groove and the lower groove for pivotal motion therein. At least one member is attached to the rear surface disposed to bridge over the upper grooves and the lower grooves, thereby to capture the top and bottom pivots within respective the upper grooves and the lower grooves.
摘要:
A method of synchronising an optical transmitter and modulator comprising transmitting a calibration sequence of pulses from the transmitter to the modulator; varying a control timing drawn from the set comprising the transmit interval timings and the modulator transmission interval timings; monitoring the resulting pulses transmitted by the modulator and selecting a preferred control timing; controlling the optical transmitter and/or modulator responsive to the selected control timing. Corresponding apparatus, systems, signals and programs for computers to implement or control the arrangement are also provided.
摘要:
The present invention is directed to a portable stove. The portable stove comprises a body member which contains burners. The portable stove includes shelves which lock into place onto the body member during use and storage. A griddle having a heat dispersement plate is removably mounted to the body member above the burner. Legs are hingedly and slidingly attached to the body member. The legs may be folded to either a standing position or a carrying position. Accordingly, the shelves, griddle and legs may be secured to the stove during storage.
摘要:
A substance deposition and backflow preventing arrangement including a housing having a port therein, a sleeve disposed within the housing and positionable to cover or uncover the port, the sleeve having a first seal at one end thereof presenting a first hydraulic dimension and a second seal at another end of the sleeve having a different hydraulic dimension, a biasing member operably connected to the sleeve and to the housing and configured to urge the sleeve to a position covering the port.
摘要:
An object removal enhancement arrangement including a second object comprising a material configured to enhance degradation of a first object. A resource recovery system including a tubular string disposed in a formation, a first seat disposed in the tubular string, a second seat disposed in the tubular string, an object receivable in the second seat upstream of the first seat, the object comprising a material to enhance degradation of an object receivable in the first seat. A method for enhancing response time for degrading degradable objects in a system including landing a first object on a first seat, pressuring against the first object, landing a second object on a second seat uphole of the first object, releasing a material of the second object to an environment between the first seat and the second seat.
摘要:
A plug bypass tool including a housing defining a main flow passage and a bypass passageway, the bypass passageway extending between a first port and a second port, the first and second ports being fluidly connected to the main flow passage, a first seat and a first sleeve disposed within the passage between the first port and second port, and a second seat and a second sleeve disposed in the passage, the second sleeve movable between a position covering the second port and a position revealing the second port.
摘要:
An acoustic metamaterial aural protection device ear cup which includes a dome having an opening, an interchangeable membrane stretched across the opening of the dome such that an airtight cavity is created, and a one-way vacuum valve; the valve is mounted to the dome, such that air can be removed from the cavity such that the membrane acts as an acoustic metamaterial, resulting in higher attenuation values at different frequencies.
摘要:
Modifications of vitamin K-dependent polypeptides that lead to enhanced protein function on a weight or molar basis and/or increase of protein lifetime in the circulation are described. Both objectives are important for using vitamin K-dependent polypeptides for pro- and anti-coagulation therapies, as well as for other uses in the circulation.
摘要:
Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting —received TSK pulses so as to transmit an on-off keying (OOK) signal wherein modulation is achieved by operating a micro-opto-electronic mechanical system (MOEMS) device having a oscillation period, the difference in timing between logic 1 and logic 0 pulses of the TSK encoded signal being such that each pulse arrives at a time within a single MOEMS device oscillation period chosen to ensure high or low transmissivity through the MOEMS device independent of incident TSK encoded signal pulse value (0 or 1).