Abstract: A feeding system and methods for feeding cats is disclosed. The system includes a package holding plural feeding devices. Each feeding device is made up of a hollow container configured to dispense a portion of the daily ration of a cat's dry cat food therefrom. Each feeding device has an internal cavity bounded by an arcuate external surface that provides the appearance of a creature that constitutes prey of a feral cat. The container has an outlet port configured to enable a portion of the cat food to gradually exit from outlet port when the container is rolled on a surface by the cat playing with the feeding device. The feeding system may include a plurality of feeding devices packaged together.

Abstract: A complete cat feeding system includes a plurality of feeding devices, each of the feeding devices having a container for containing and dispensing a portion of cat's daily food ration. Each container has a convexly curved external surface, a first port and a second port arranged along a top portion of the container providing access to an interior space of the container, and a bridging wall separating the first port and the second port, the bridging wall extending above the first port and the second port. Each feeding device may further include a simulation covering constructed from a flexible material, the simulation covering having a pocket for receiving a portion of the container therein without covering the first port and the second port. The cat feeding system may include a training device providing a second container having more than two ports for containing and dispensing a portion of cat food.

Abstract: A line drawing tool includes a body; a reel that is rotatably provided in the body and that includes flanges on two ends of a thread winding shaft; a thread that is wound around the thread winding shaft and that is drawn out to outside of the body with powder that is enclosed in the body being adhered to the thread; and a clearance that is formed between the flanges of the reel and the body, the clearance being provided for allowing the powder that accumulates between the body and the flanges to escape.

Abstract: An electrical arc detector for a series electrical connection as may be associated with an electric meter may comprise: an arc detector housing; a source of electrical power; a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field generated by an electrical arc at a series electrical connection; an electrical detector for detecting signals generated in the de-tuned resonant tank circuit responsive to the magnetic field and/or the electric field generated by an electrical arc; and an output device responsive to the electrical detector and configured to provide a human perceivable indication of detection of an electrical arc at the series electrical connection.

Abstract: A rotary tool includes a driving power source, a spindle formed in a columnar shape extending to a first side of an axial direction, a main hammer including a hammer pawl, an anvil including an anvil pawl engageable with the hammer pawl, a cylindrical secondary hammer disposed so as to cover an outer circumference of the main hammer, a round-columnar pin having an end portion on a second side of the axial direction positioned between the main hammer and the secondary hammer, an impacting mechanism disposed on the spindle so as to support the main hammer, and a casing. At least one end portion of the pin in the axial direction is supported in a radial direction of the pin by at least one of the spindle or the casing in such a manner that a rotation axis of the secondary hammer coincides with a rotation axis of the spindle.

Abstract: A cover, or dust cover, for use in a firearm, the firearm being operable for firing a cartridge having a projectile and having a receiver portion including an elongated passageway, a magnetic reciprocatable firing mechanism operable to fire the cartridge, a charging handle connected to the firing mechanism, and a barrel adapted to receive the projectile after the cartridge is fired. The dust cover is adapted for movement and to substantially cover a portion of the passageway. A magnet is connected to the dust cover and is magnetically attracted to the firing mechanism such that the dust cover is drawn towards and substantially follows the firing mechanism as the firing mechanism reciprocates with respect to the receiver upon firing the cartridge, wherein the dust cover intermittently uncovers and covers the portion of the passageway as the firing mechanism reciprocates.

Abstract: An aircraft includes an airframe parachute system. The parachute system includes an activation system, an extraction system, a harness system, and a parachute assembly.

Abstract: Various applications for structured CNT-engineered materials are disclosed herein. In one application, systems are disclosed, wherein a structured CNT-engineered material forms at least part of an object capable of providing its own structural feedback. In another application, systems are disclosed, wherein a structured CNT-engineered material forms at least part of an object capable of generating heat. In yet another application, systems are disclosed, wherein a structured CNT-engineered material forms at least part of an object capable of functioning as an antenna, for example, for receiving, transmitting, absorbing and/or dissipating a signal. In still another application, systems are disclosed, wherein a structured CNT-engineered material forms at least part of an object capable of serving as a conduit for thermal or electrical energy.

Abstract: A space relevator adapted to transition an object between a stationary compartment and a rotating module rotating in a first direction, the relevator comprising: a relevator module comprising a plurality of substantially solid pie-shaped structures separated by a plurality of pie-shaped compartments all positioned around a central axis; a relevator central shaft extending along the central axis; the relevator module being adapted to receive a rotate signal and a stop signal, one or more of the pie-shaped compartments comprising an entry between the stationary compartment and the rotating module when the relevator module receives a stop signal and after the relevator module receives a rotate signal.

Abstract: A computer system receives a plurality of files having respective file sizes. The computer system categorizes the files into different categories according to their respective file sizes. For a file in the first category, the computer system identifies first and second versions of the file and generates a difference between the two versions based on a view of the first version and a view of the second version. For files in the second category, the computer system identifies a file aggregation of the files by combining them into one file such that the combined file have a file size within the first file size range. The computer system identifies first and second versions of the file aggregation and generates a difference between the first and second versions based on a view of the first version and a view of the second version of the file aggregation.

Abstract: An aircraft includes an airframe parachute system. The parachute system includes an activation system, an extraction system, a harness system, and a parachute assembly.

Abstract: An aircraft includes an airframe parachute system. The parachute system includes an activation system, an extraction system, a harness system, and a parachute assembly.

Abstract: An aircraft includes an airframe parachute system. The parachute system includes an activation system, an extraction system, a harness system, and a parachute assembly.

Abstract: A container apparatus for exposing an article to an external environment, the apparatus including a sidewall with an interior having an inner surface, the sidewall terminating in a first margin and an opposing second margin. The container apparatus also includes a capsule having an outer periphery and an inner void holding the article, the outer periphery is slidably engaged to the sidewall inner surface, the capsule having a split boundary separating the capsule into a plurality of partial capsule elements. The capsule having a closed state with the partial capsule elements being adjacent at the boundary while slidably engaged to the sidewall with the void separated from the environment and the capsule being able to have an open state without the slidable engagement as the partial capsule elements are separated at the boundary with the void open to the environment, thus exposing the article to the environment.

Abstract: An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.

Abstract: A firearm is described herein. The firearm comprises a receiver assembly adapted to receive a cartridge, a bolt assembly including a firing device operable to fire the cartridge, a barrel adapted to receive the projectile after the cartridge is fired, and a gas assembly including a gas tube. The receiver assembly includes an upper receiver portion, a lower receiver portion, and an upper receiver cover. The upper receiver portion defines a longitudinal axis, and an indexing slot operable to receive the gas tube. The upper receiver portion includes at least one integrated exterior track extending generally parallel to the longitudinal axis adapted to slidably couple with the upper receiver cover and a plurality of interior tracks extending generally parallel to the longitudinal axis adapted to slidably couple with the bolt assembly. The upper and lower receiver portions are pivotally connected to one another.

Abstract: A rotary tool includes a driving power source, a spindle formed in a columnar shape extending to a first side of an axial direction, a main hammer including a hammer pawl, an anvil including an anvil pawl engageable with the hammer pawl, a cylindrical secondary hammer disposed so as to cover an outer circumference of the main hammer, a round-columnar pin having an end portion on a second side of the axial direction positioned between the main hammer and the secondary hammer, an impacting mechanism disposed on the spindle so as to support the main hammer, and a casing. At least one end portion of the pin in the axial direction is supported in a radial direction of the pin by at least one of the spindle or the casing in such a manner that a rotation axis of the secondary hammer coincides with a rotation axis of the spindle.