摘要:
A package wrapping removal system and method of operation for removing a wrapping from a product has a first cutter that cuts the wrapping along a first side face of the wrapped product as the product moves along a first transport. A second transport of the system then receives the wrapped product from the first transport. As the wrapped product moves along the second transport, the first cutter and an opposing second cutter cut the wrapping along respective flanking side faces of the product. A vacuum device integrated into the second transport then removes the wrapping as one piece as the unwrapped product continues to move downstream.
摘要:
An improved printed circuit card or second level electronics package (circuit board) including a laminate of lossy material and dielectric material between the voltage supply plane (Vcc) and the ground (GND) plane. The laminate suppresses common mode noise that is generated by active components on the card or circuit board.
摘要:
A chain extending agent for reaction injection molding (RIM) comprising a normally liquid blend of butanediol and a toluene diamine mono-substituted with an electron withdrawing group and having the formula ##STR1## wherein X is vicinal to an amino radical and is selected from the group of halogen, CN, NO.sub.2, acyl, carboxylate and isomeric mixtures thereof, and wherein the butanediol and diamine are combined in a critical mole ratio of from 4:1 to about 19:1. The above blend is particularly useful in the preparation of large moldings of polyurethane-polyurea elastomer by the RIM or RRIM (reinforced reaction injection molding) process wherein instant preformed blend is added to a mixture of polyol reactant and catalyst before polymerization in the mold with isocyanate to produce a urethane/urea polymer product of improved properties. Accordingly, the invention also concerns an enhanced RIM or RRIM process and improved product by the use of a mixture of the present chain extender blend and polyol reactant maintainable in the liquid state at ambient temperature.
摘要:
The present invention relates to new compositions and methods for the regulation of plant growth, especially for prevention of lodging, promotion of fruit abscission, acceleration of ripening and sap flow, breaking of seed dormancy, advancement of sprouting, inhibition of germination and rhizome development or inhibition by utilizing a coacting mixture of a N-heterocyclic amide having one hetero-nitrogen atom per 5- or 6- membered ring and a haloalkyl silane having the formula: ##STR1## wherein X is a chlorine, bromine or iodine atom;Y and Z are each independently --OR; halogen; alkenyl of 3 to 8 carbon atoms or alkyl of 1 to 12 carbon atoms, both optionally substituted with halogen, lower alkoxy or phenyl; benzyl or phenyl, both optionally substituted with halogen, lower alkyl or lower alkoxy; andR is hydrogen; alkenyloxy of 2 to 8 carbon atoms or alkyl of 1 to 12 carbon atoms, both optionally substituted with halogen, or alkoxy; benzyl or phenyl, both optionally substituted with halogen, lower alkyl or lower alkoxy and mixtures of said silanes and said amides.
摘要:
The partial alkylation of a polyhydroxybenzophenone having ortho- and para-hydroxy substituents to form an ortho-hydroxy, para-alkoxy benzophenone is carried out in the presence of a non-aqueous solvent, viz. a polyethylene glycol or its mono or dialkylated derivatives, whereby high yields of alkylated product are obtained in shorter reaction times.
摘要:
The present invention provides novel fungicidal compositions for agricultural use which comprise an effective amount of a 1-(alkoxyphenyl)-5-(phenyl)biguanide compound having the formula: ##STR1## where R is alkyl, linear or branched, having from 1-14 carbon atoms; and also acid addition salts thereof, in a suitable inert carrier material.The invention further relates to a method for controlling or protecting pathogenic fungi with a fungicidally effective amount of said compound. Fruit trees, especially apple trees, are controlled against the fungi which causes apple scab.
摘要:
A firearm includes a receiver. A bolt carrier is moveable relative to the receiver between a firing position and a rearward position. A hand guard is coupled to the receiver. A gas tube is disposed at least partially within and fixed relative to the hand guard. A handle assembly is at least partially disposed in the hand guard and is moveable between a forward position and a charging position. The handle assembly has a body and an elongated member extending from the body toward the bolt carrier. The elongated member is disposed about the gas tube and is movable relative to the gas tube between the forward and charging positions. The elongated member engages the bolt carrier to move the bolt carrier from the firing position to the rearward position when the handle assembly moves from the forward position to the charging position.
摘要:
The present invention provides for a firearm including a buttstock defining a first bore extending along a longitudinal axis and a receiver coupled to the buttstock. The receiver defines a second bore extending substantially parallel to the longitudinal axis and in fluid communication with the first bore. The receiver also defines an ejection port transverse to the longitudinal axis. The firearm further includes a bolt carrier disposed in the second bore and moveable relative to the receiver along the longitudinal axis between a firing position and a rearward position. The firearm also includes an expulsion device at least partially disposed in the buttstock for flowing air through the first and second bores and out the ejection port as the bolt carrier moves between the firing and rearward positions.
摘要:
A firearm including a barrel having a breech and a muzzle defining a length of the barrel is disclosed. The firearm includes a hand guard having a first end and a second end with a front sight is attached to at least one of the barrel adjacent the muzzle and the second end of the hand guard. A housing is coupled to the front sight and defines a chamber having a piston disposed therein and movable between static and displaced positions. A receiver is coupled to the first end and a bolt carrier is disposed within the receiver and moveable between firing and rearward positions. A carrier key is attached to the bolt carrier and moves concurrently with the bolt carrier and a rod is permanently affixed to the carrier key and extends to a distal end with the piston engaging the distal end when moving to the displaced position.
摘要:
The present invention relates to the design and implementation of parallel pipelined circuits for the fast Fourier transform (FFT). In this invention, an efficient way of designing FFT circuits using folding transformation and register minimization techniques is proposed. Based on the proposed scheme, novel parallel-pipelined architectures for the computation of complex fast Fourier transform are derived. The proposed architecture takes advantage of under utilized hardware in the serial architecture to derive L-parallel architectures without increasing the hardware complexity by a factor of L. The proposed circuits process L consecutive samples from a single-channel signal in parallel. The operating frequency of the proposed architecture can be decreased which in turn reduces the power consumption. The proposed scheme is general and suitable for applications such as communications, biomedical monitoring systems, and high speed OFDM systems.