88 results about "Shotgun" patented technology

A firearm includes a noise suppressor comprising ports in the barrel opening into an annulus provided between a barrel and a sleeve extending from adjacent the muzzle to adjacent the receiver. In the annulus are a series of baffles. The most upstream port opens upstream of the most upstream baffle and downstream ports open between adjacent baffles. In some embodiments, the upstream ports are considerably larger than the downstream ports. Propulsion gases escape from the barrel into the annulus before the projectile clears the muzzle. Sabot rounds or shotgun rounds can be safely fired in the weapon because the sabot carrier or shot cup don't begin to expand until it is past the muzzle end so it cannot damage the noise suppressor.

The invention discloses a heterozygous genome processing method. The method comprises the following steps: carrying out at least 200 times ultrahigh deep sequencing on target species by using a whole genome shotgun process to obtain an effective read length sequence Reads; carrying out scaffold sequence Scaffold assembling and construction on the effective Reads to obtain a genome map with a redundant sequence; and carrying out heterozygous recognition processing on the genome map with a redundant sequence to remove redundant Scaffold in a heterozygous region and reserve heterozygous region information in order to obtain a whole genome map. The method realizes the rapid assembling of the whole high-quality heterozygous genome map, and shortens the drafting cycle and cost.

The aluminum can puncturing device is a hand-held device that resembles a shot gun shell and of which is capable of puncturing an air vent into a side of an aluminum can in order to “shotgun” a beer. The aluminum can puncturing device includes a spring-loaded pin that retracts within a shotgun shell. The aluminum can puncturing device is placed onto an outer surface of an aluminum can and pushed thereon in order to extend the pin out from under the shotgun shell in order to pierce a vent hole into the aluminum can.

A buffer tube for firearms, including assault rifles, carbines, shotguns, and other rifles is disclosed. The floating buffer tube comprises a recoil mitigation mechanism, including a helical spring or an elastic or viscous energy absorption device, and a buttstock mounting bracket mounted outside the buffer tube. The buttstock mounting bracket can rotate relative to the buffer tube, which changes the axial angle of the buttstock relative to the firearm. The angle can be locked under an expansive force by forcing a bolt or pin into grooves to select the proper axial angle of the buttstock relative to the firearm in the field without the user having to disarm himself to perform the angle change.

The invention is a versatile, but simple, rifle sling for carrying a rifle, shotgun, or other long gun over one shoulder. The sling can be attached to the rifle by use of studs or swivels in a conventional manner or can be attached directly to the firearm by using the adjustable loops at each end of the sling. It is constructed from a single strip of leather without the use of any hardware such as buckles, clasps, clamps, hooks, rivets, screws or other devices. Each of the adjustable loops are formed from slide-lock knots.

A shotgun metabolomics approach using MALDI-tandem mass spectrometry was developed for the rapid analysis of cellular metabolites. Through the use of neutral organic solvents to inactivate endogenous enzyme activities (i.e., methanol/chloroform/H₂O extraction), multiplexed extraction conditions and combinatorial alterations in matrix stereoelectronic composition and analyte interactions, multiple suites of metabolites were directly ionized and quantitated directly from biologic extracts without the need for prior chromatographic separation. Through combinatorial alterations in 9-aminoacridine charge, aromaticity and stacking, a set of multiplexed conditions was developed that allowed identification of many hundreds of peaks corresponding to metabolites from mouse heart extracts. Identification of metabolite peaks was based on mass accuracy and isomeric species were assigned based on diagnostic fragment ions present during tandem mass spectrometry for many of the identified metabolite peaks.

A tracer cylinder for use with a shotgun shell to provide an aiming and training aid for shotgun shooting sports, which also can be used for military and police applications. The tracer cylinder, which contains a liquid, is positioned in a shotgun shell above a disk-shaped piercing valve. The shell is loaded into a shotgun and fired. The forces of ignition cause the point on the piercing valve to puncture the bottom of the cylinder, and, when the cylinder is airborne, tracer liquid is released through the resulting opening by physical forces, creating a long-lasting mist or fog cloud that is visible to the shooter. The shooter is provided with a consistent and durable reference, allowing him or her to make effective corrections to his or her shooting technique. The tracer cylinder can be loaded into a shot holder, with or without shot pellets.

A voice activated apparatus for automatic sequential launching of clay targets for Skeet, Sporting Clays and Trap shotgun sports. The apparatus first detects a voice command and launches target(s) and then detects the gunshot(s) of the shooter to determine the completion of a segment of the shooting sequence and automatically progress to the next segment for activation upon the next voice command. The apparatus comprising a signal processing unit, designed to analyze spectral patterns and signal levels associated with acoustic signals, in order to distinguish the voice command from ambient and gunshot noise and prevent false activation. By tracking the number of gunshots fired by each shooter, the system determines the end of the shooting sequence and controls the number of clay targets allocated to each shooter.

Disclosed is an autoloading shotgun firearm which shares interchangeable fully compatible modular sub-assemblies, ergonomics, parts commonality, and exterior appearance with the AR rifle platform. Rapidly reversible tool less conversion from rifle to shotgun and vice versa is accomplished by substitution of the AR rifle upper receiver and ammunition detachable magazine with fully compatible shotgun upper receiver and ammunition detachable magazine. Said shotgun utilizes standard rimmed shotgun ammunition via features in the detachable magazine which securely maintain the position and facilitate the feeding of the cartridges during normal operation. No alteration of the AR rifle lower receiver is required. A short-recoil action is integrated into the shotgun upper receiver. The external appearance and functionality of the AR rifle are retained while eliminating the complexity and inherent fouling issues of typical gas systems used in the AR rifle. A short-recoil action also enables the shotgun to function reliably with shorter length barrels.

The invention relates to a vehicle collision-proof beam, which comprises a main beam, an energy absorbing box and a flange, wherein the main beam is connected with a front longitudinal beam of an vehicle through a flange and a bolt, an energy absorbing box is arranged between the main beam and the flange, two mirror-symmetrical side beams are respectively arranged at left and right ends of the main beam, each side beam structure is of a hook type, one end of the hook type is connected with the main beam, and the other end of the hook type is suspended and pointing to a body shotgun structure.In accordance with that prior art, As that vehicle is in a small offset collision process, After the vehicle is impacted by the collider, because two side beams are added to the side of the main beam,the length of the whole anti-collision beam is increased, and the yield strength of the two side beams is higher than that of the energy absorbing box, the energy absorbing box on the side of the collision will collapse and absorb energy first, and then the side beam will collapse and bend to impact the front longitudinal beam. As a result, the vehicle deviates from the collider with the drivingpassenger along the projection plane of the collision direction, thereby reducing the passenger injury index and protecting the safety of passengers.

The invention relates to the field of biomedicine, and particularly to screening and application of a feces gene marker based on high-flux metagenome sequencing analysis. According to the method, through extracting feces DNA for performing macro genome sequencing and ROC curve analysis by means of a shotgun method, the gene marker is screened, and furthermore the gene marker is verified through fluorescent real-time quantified PCR for obtaining consistency. According to the method, metagenome high-flux shotgun sequencing technical measurement is firstly performed in feces of Chinese PD patients, and a screening method for the feces gene marker is established; various different genes in the feces of the PD patient are found; 25 feces gene markers are screened as PD diagnosis markers for auxiliary diagnosis of the PD patient; and the method has important academic meaning and application prospect for enriching and further understanding the pathological mechanism of PD.

The invention relates to an nfi-gene-knocked-out mutant strain of escherichia coli DH5 alpha as well as a preparation method and application thereof. As for the mutant strain DH5 alpha delta nfi, the conservation number is CGMCC No.4236. The preparation method of the mutant strain comprises the following steps: carrying out gene knockout on EndoV coded on chromosomes of an E.coli DH5 alpha strainby using a lambda homologous recombination technology; and determining that the obtained strain is a gene-knocked-out mutant strain through confirmation of electrophoresis and sequencing identification of polymerase chain reaction (PCR) products, and naming the obtained gene to be DH5 alpha delta nfi. In the invention, the mutant strain is taken as clone host bacteria, and shotgun sequencing splicing is carried out 'no-cloning fragments' of pseudomonas aeruginosa bacteriophage PaP1 genome difficult to detect by a shotgun method, thus, the 'no-cloning fragments' can be successfully obtained. The success shows that the mutant strain can be utilized to solve the problem that deoxyribonucleic acid (DNA) sequencing or/and cloning is/are difficult to realize by using the traditional shotgun method.

A wrist watch-style timepiece includes a means for secure mounting onto a variety of common hunting weapons, such as a rifle, a crossbow, a shotgun or a bow. The mounting members are envisioned to include a variety of straps and closures configured to accommodate the selected type of weapon and to be connected to the timepiece by mounting collars. The timepiece is intended to show the time in a glow-in-the-dark display in a user's line of sight, thereby avoiding any rustling sounds associated with consulting a wrist watch or pocket timepiece.

A flat, rectangular, concealed wall-mounted locking cabinet which can be securely fastened through the outside surface of a wall and into supporting studs without requiring significant modification to the wall is described. The cabinet is completely concealed by a nesting cover that simultaneously functions as a picture frame or other artistic work. The cover and the door of the cabinet both may open in a downward manner, thereby permitting the cabinet to be made in a variety of sizes whereby handguns and long guns, such as shotguns and rifles, as well as other articles, may be accommodated.

A firearm with shotgun receiver and stabilizing brace adaptor includes a shotgun receiver assembly that is in communication with a box-style shotgun shell magazine, a shotgun barrel, a tubular magazine, a pump handle, a trigger assembly, a hand grip, and a stabilizing brace adaptor. The stabilizing brace adaptor includes an elongated tubular member having a threaded end, and a grip connector that is interposed between the tubular member and the hand grip.