摘要:
A firearm includes a receiver and a barrel connected to the receiver. A hand guard extends from the receiver and defines a hand guard bore. The receiver includes a threaded end and the hand guard includes a flange extending into the hand guard bore and abutting the receiver about the threaded end. A hand guard nut abuts the flange of the hand guard and threadedly engaging the threaded end of the receiver. The hand guard nut sandwiches the flange between the hand guard nut and the receiver for attaching the hand guard to the receiver. The hand guard includes a first hand guard portion and a second hand guard portion removably attached to the first hand guard portion. The second hand guard portion is slid from an assembled position to a disassembled position to expose the hand guard nut in the hand guard bore.
摘要:
A firearm having a receiver defining a bore with the receiver extending along a longitudinal axis. The receiver defines an ejection port transverse to the longitudinal axis with the bore defining an inner surface. A bolt carrier is disposed in the bore and moves relative to the receiver along the longitudinal axis between a firing position and a rearward position with the bolt carrier defining at least one exhaust port transverse to the longitudinal axis. A shield defines an aperture aligned with the exhaust port for exhausting gases therethrough. The shield is longitudinally affixed to the bolt carrier and moves with the bolt carrier as a unit between the firing and rearward positions along the longitudinal axis with the shield blocking the ejection port when in the firing position and the shield sliding along the inner surface away from the ejection port when moving to the rearward position in conjunction with the bolt carrier.
摘要:
A process and system for providing a hydrogen-containing gas stream to a fuel cell anode that includes providing a hydrogen-containing gas stream that includes carbon monoxide, introducing the hydrogen-containing gas stream into a pressure swing adsorption module that includes at least one carbon monoxide-selective adsorbent to produce a purified hydrogen-containing gas stream, and introducing the purified hydrogen-containing gas stream to the fuel cell anode. The pressure swing adsorption module can also include a second adsorbent and/or catalyst. Also disclosed is a fuel cell system coupled to an internal combustion engine and a fuel cell system that utilizes fuel cell waste heat for vaporizing a hydrocarbon/water mixture.
摘要:
A filling valve apparatus for filling a container with a fluid. The apparatus includes a body portion and a stem. A sleeve is disposed over the stem and is removable from the stem and the body portion when the filling valve apparatus is serviced. A seal is mounted to the bottom of the sleeve. At least one component is movably connected to the sleeve and remains connected to the sleeve when the sleeve is removed from the stem and the body portion during the servicing of the filling valve apparatus. Similarly, a valve assembly, having a housing and a movable plunger is removable from the body portion. At least one member is mechanically connected to one of the housing and plunger for creating a unitary valve assembly that remains intact when the valve assembly is removed from the body portion during servicing of the filling valve apparatus.
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 capping device fits caps onto containers by applying an axial force to the caps as they are threaded onto the containers. The capping device utilizes a drive member rotatable about an operational axis for imparting rotation to a capper body slidably coupled to the drive member. A helical spring urges the capper body away from the drive member with a biasing force. A bearing mechanism allows relative free sliding movement of the capper body relative to the drive member. The bearing mechanism includes a plurality of bearing members. In one embodiment, the bearing members are bushings. In another embodiment, the bearing members are ball bearings.
摘要:
This invention relates to a composition comprising a mixture of a N-heterocyclic amide, such as N-methylpyrrolidone, and a 2-haloethylsulfinate having from 3 to 22 carbon atoms for the treatment of plants, including trees, shrubs, farm crops and ornamentals to achieve promotional and sustained hormonal ethylene plant growth regulatory effects; and the method of using and preparing said composition.
摘要:
A method of controlling pollen formation in a hermaphrodite plant, the method comprising applying to the plant, to seed of the plant or to the locus surrounding the plant or seed, a compound of formula: ##STR1## wherein R.sup.1 is hydrogen or alkyl, R.sup.2 is hydrogen, alkyl, alkyl substituted with up to three halogens (e.g. trichloro- or trifluoro-methyl), cycloalkyl, alkoxyalkyl (e.g. 2-methoxy-ethyl), substituted or unsubstituted aryl or aralkyl or an alkali metal (e.g. sodium or potassium), alkaline earth metal or quaternary ammonium cation, R.sup.3 is halogen, nitro, alkyl, alkyl substituted with up to three halogens (e.g. trichloro- or trifluoro-methyl), cycloalkyl, alkoxy, alkylthio, amino, acylamino (e.g. acetylamino), mono- or di-alkylamino, acyl (e.g. acetyl), haloacyl (e.g. bromoacetyl), cyano, amido, hydroxy, carboxy, alkoxycarbonyl (e.g. methoxycarbonyl) or phenoxy, n is 0 or an integer of 1 to 5 (preferably 0, 1, 2 or 3) and each of X and Y, which may be the same or different, is oxygen or sulphur.
摘要:
Compounds of the formula: ##STR1## where R is a secondary or tertiaryalkyl, C.sub.4 -C.sub.10,R' is hydrogen, alkyl, C.sub.1 -C.sub.6 or acyl, C.sub.2 -C.sub.6,X is oxygen or sulfur, and,Y and Z are independently alkyl, alkenyl, alkoxy, thioalkoxy, alkenyloxy or thioalkenyloxy, C.sub.1 -C.sub.6,are described herein.These compounds are useful as insecticides or miticides.
摘要:
A sanitary backwashing system for an automatic milking machine having a milking unit and a source of vacuum, the system including a valve having a first port connected to the milking unit and a pair of second ports alternately connected to the first port, one of the second ports being connected to the source of vacuum; and a source of sanitizing fluid under pressure connected to the other of the second ports and the valve having a first position in which the valve connects the milking unit to the source of vacuum while blocking off the other of the second ports and a second position in which the valve connects the milking unit to the source of sanitizing fluid while blocking off the source of vacuum.