Abstract: A safety device for portable firearms, provided in the form of a padlock that includes a main body provided with a lock and with an active portion that is adapted to be locked in a position of interference between the barrel extension, or breech, and the head of the breechblock of the weapon, in order to prevent the operation thereof.

Abstract: An extended hummingbird feeder tube is provided which has a tubular shaft length of at least about six times the length of the internal diameter of the tubular shaft, and which extends to substantially a bottom portion of an upright reservoir to facilitate efficient and effective feeding for hummingbirds. Preferably, the hanging, upright tube has an annular lip which can take the form of various flower blossoms in order to replicate the external and internal characteristics of a typical flower.

Abstract: Device (1) for carrying objects, in particular excrement. This device consists of a film sheet which is provided with openings (3-5) and is placed on the base of a cat litter tray. The cat litter tray is then filled with grit in the conventional manner. To remove excrement the user has to grasp the film at handles (7) in the film sheet which extend outside the cat litter tray close to the ends. The openings (3-5) are made such that excrement cannot pass through openings but the cat litter grit will remain on the base of the cat litter tray. Optionally a number of such film sheets can be placed on top of one another for regular removal of excrement without a large quantity of grit being consumed.

Abstract: A method for protecting an aircraft against a threat that utilizes an infrared sensor includes providing a plurality of dispensable infrared sources transported in an infrared-source dispenser with the aircraft. A set of infrared-emitting properties of the infrared sources is selected responsive to a set of infrared detecting characteristics of the infrared sensor. A modulated pattern of the infrared sources is dispensed from the infrared-source dispenser responsive to at least one of the set of infrared detecting characteristics of the infrared sensor, and a geometric engagement scenario of the aircraft and the threat.

Abstract: The shooting device, such as a revolver, has a housing with a barrel-receiving opening defined therein. A cylinder and a barrel are attached to the housing. The barrel has a rear section with a cylindrical segment that slidably engages the cylindrical segment. A spring has one end attached to the rear section of the barrel and a second opposite end attached to the cylindrical valve for urging the valve against a groove section of the cylinder so there is a tight fit between the valve and the cylinder during the firing of the bullet. This prevents any pressure loss when the bullet is fired.

Abstract: A gun muffler and a noise abatement system for a large caliber gun having a gun tube include a catcher. The catcher, which is disposed within the pressure vessel for entrapping particulates and for permitting the projectile to pass, includes a plurality of columns adapted for being removably attached within a pressure vessel. The gun muffler includes a transition section fitted around the gun tube and engaging the gun tube for preventing the escape of residual combustion gases caused by the firing of a projectile by the gun. Attached to the transition section is at least one pressure vessel which defines a pressure chamber for containing residual combustion gases and attenuating pressure waves. The noise abatement system includes a horizontal concrete slab and a gun muffler, as that described above, adapted for being mounted on the concrete slab.

Abstract: A cocking knob and striker assembly for a gas-powered projectile firing device (e.g., a paintball marker). The cocking knob is adapted for operative connection with the striker and has a rearwardly facing spring seat adapted to engage the striker spring. Spring pressure on the cocking knob keeps it engaged with the striker. The arrangement affords easier disassembly and reassembly of the parts.

Abstract: A self-metering feed dispensing system including a feed supply hopper having an interior for receiving feed. The feed supply hopper has upper and lower portions, with the upper portion extending over the lower portion and being removably mounted on the lower portion for permitting access to the interior. The lower portion may comprise a pair of hopper sections each terminating at a bottom of the lower portion in an outlet with an opening. The hopper sections may each have a perimeter wall converging toward the outlet and diverging away from the outlet. Optionally, the system may include a feed delivery tube extending downwardly from the feed supply hopper and having an upper end being in fluid communication with interior of the feed supply hopper and having a lower end, and a feed trough below the feed del very tube for holding feed delivered by the feed delivery tube.

Abstract: A aquarium water circulation system for facilitating removal of water and cleaning of an aquarium. The aquarium water circulation system includes a support member having a base portion. The support member has a plurality of stanchions. Each of the stanchions downwardly extends from the base portion. The stanchions are designed for supporting the base portion on a support surface. A plurality of wall members are coupled to the base portion of the support member. The plurality of wall members define a containment space. The containment space is designed for holding water and fish. The support member has at least one drain portion. The drain portion is coupled to the base portion of the support member. The drain portion is in fluid communication with the containment space whereby the drain portion is designed for draining water out of the containment space.

Abstract: A frame of an electric cart includes a front part, and a rear part. A head tube, a seat support, a securing combination, and front wheels are disposed at the front part. Rear wheels are disposed the rear ends of the rear part. Shock absorbers are connected to the rear part at lower ends. The rear part is connected to the front part with the front ends being pivoted to pivotal members formed at intermediate portions of the lateral sides of the base, and with upper ends of the shock absorbers being connected to the securing combination. The pivotal members are arranged nearer the front of the front part than the seat support so that distance from the rear wheels to the pivotal members is increased, thus helping reduce a range within which the rear part will vibrate when the cart moves along an uneven surface.

Abstract: A firearm accessory holder which facilitates the secure carry and rapid deployment of a loaded full-moon clip when being worn on the waist belt. The carrier mounts to the wearer's waist belt by means of a belt loop. It secures the loaded full-moon clip by means of a wearer adjustable central compression expansion shaft in combination with a snap secured leather flap cover.

Abstract: A removable cylinder for a revolver according to the present invention includes a plurality of cartridge chambers, each appropriately sized to receive a blank cartridge therein. The cartridge chambers are sealed at their distal end to prevent debris from a fired blank cartridge from entering the revolver barrel. The cylinder may further include passages (e.g., vent ports or grooves) in communication with the cartridge chambers to vent exhaust gases released from the blank cartridges in response to revolver actuation. The revolver may further include a laser transmitter assembly to project a laser beam toward a target in response to revolver actuation to simulate firearm operation.

Abstract: A paintball gun control system according to this invention includes an electronic circuit board configured to receive a sensor signal corresponding to a measured value of a paintball gun characteristic. The circuit board compares the measured value with a desired value. Based upon that comparison, the circuit board adjusts one or more characteristics of the paintball gun to bring the measured value into conformity with the desired value.

Abstract: A pneumatic assembly preferably includes a compressed gas storage area, a firing valve, and a bolt arranged along substantially the same horizontal axis. A valve retainer, a compressed gas storage area housing, and a bolt assembly are preferably arranged to form a substantially contiguous assembly housing. The firing valve is preferably configured to open when gas pressure is applied to a surface area thereof through a control valve. The bolt is preferably configured to move to a closed position before the firing valve is actuated. The control valve is preferably an electro-pneumatic valve configured to actuate the firing valve in response to a trigger pull of a paintball gun.

Abstract: An electronically-operated pneumatic launching device preferably includes a gun-shaped body having a trigger. A bolt preferably permits a projectile to be loaded into a chamber during a loading operation. The bolt can be configured to be opened by the application of pneumatic force. A valve is preferably located in the body and selectively supplies compressed gas from a compressed gas source to the chamber during a firing operation. An electrical circuit is also preferably arranged in the body to initiate the firing operation of the paintball gun in response to actuation of the trigger.

Abstract: A replacement bolt action assembly useful for converting a gas operated paintball marker gun having an open bolt type action to a closed bolt type action is provided. The open bolt type action includes a combination open bolt and hammer assembly releaseably containable in the marker gun body, an actuator (trigger) assembly disposable in the marker gun frame in mechanical communication with the bolt and hammer assembly, for releaseably holding the bolt and hammer assembly in a cocked configuration; and a pressure control assembly in mechanical communication with the actuator assembly and in gas flow communication with the bolt and hammer assembly. The present invention can be provided as a kit for converting or replacing the actions of certain existing paintball marker guns to close bolt type actions without having to modify the structure of the existing gun's receiver or marker body.

Abstract: A firearm receiver system includes an upper receiver assembly capable of receiving magazine-fed ammunition and belt-fed ammunition. A lower receiver is attached to the upper receiver assembly. The lower receiver assembly is capable of having an ammunition magazine attached thereto for communicating ammunition from the ammunition magazine to the upper receiver assembly. An ammunition belt feeding assembly is attached to the upper receiver assemble for communicating ammunition from an ammunition belt to the upper receiver assembly.

Abstract: A cat toy comprising a randomly moving body and one or more attached members. The pseudo-random mechanical motion of the body is transmitted by the member to a free end of the member. Angular momentum tends to keep the free end of the member moving near the ground thus creating a moving object attractive to cats and inducing them to play and exercise.

Abstract: A gas powered gun for firing paintballs dispensed from a magazine includes a bolt slidable within a breech section, a slidable hammer connected to the bolt and a spring to bias the hammer towards a forward firing position. A trigger operates an electrical circuit that includes a solenoid adapted to move a sear mechanism so as to release the hammer when the trigger is pulled. The solenoid has an actuating member movable from a lower position corresponding to the cocked position to a raised firing position at which the sear mechanism is disengaged from the hammer. An annular sealing member mounted at the bolt's front end is engageable with the barrel. The preferred sear member is elongate and pivots about a central transverse pivot axis. This sear member is engaged at its front end by the actuating member in order to release the hammer.

Abstract: The Aqua Clean BirdCage Companion is a hydraulic waste and airborne contaminant containment system disposed beneath a birdcage, occupying a bird. The birdcage, having a grid floor retains and separates the bird from the system, while allowing the waste and airborne contaminants from the caged bird to gravitate to the system's constant medium being a hydraulic body of water contained in a tray beneath the birdcage. Our constant medium traps, contains and moves waste and airborne contaminants within it's water to a plurality of filters. The waste filled water passes through the filters. The filters remove the waste materials. The now filtered water is returned by electric pump and discharged into the tray's constant medium creating the hydraulic body, which traps and contains new waste for removal. The filters continually renew the water in this closed hydraulic waste and airborne contaminant containment system.