Abstract: A satellite system comprises first and second devices, one of the first and second devices being a satellite and the other one of the first and second devices being a device arranged to send signals to the satellite. A session key can be distributed in the satellite system by obtaining the session key at the first device, protecting the session key at the first device, based on a private key of the first device and a public key of the second device, and transmitting the protected session key from the first device to the second device. Replay detection information can be transmitted with the protected session key, for determining whether the session key has been transmitted previously.

Abstract: A satellite system comprises first and second devices, one of the first and second devices being a satellite and the other one of the first and second devices being a device arranged to send signals to the satellite and/or receive signals from the satellite. A session key can be distributed in the satellite system by obtaining the session key at the first device, protecting the session key at the first device, based on a private key of the first device and a public key of the second device, and transmitting the protected session key from the first device to the second device. The second device can receive the protected session key from the first device and obtain the session key from the protected session key based on a public key of the first device and a private key of the second device. Replay detection information can be transmitted with the protected session key, for determining whether the session key has been transmitted previously.

Abstract: Disclosed is a substance and related methods for cleaning electronic devices which are to be used successively by different human operators.

Abstract: A recoil reducing device that reduces the recoil felt by users of rifles and shotguns. The recoil reducing device includes of a force-distribution member that increases the area over which the recoil force is distributed, thereby reducing the force per unit area, and a compressible element that cushions the user from the force of recoil. The force-distribution member can include tabs along its edges. Any number of the tabs may be bent outward, relative to the shoulder of the user to better form the recoil reducing device to the user. Also alternatively, the force-distribution member can include a plurality of grooves along a portion of its edge, and can also include interior cuts within.

Abstract: The invention relates to a recoil-reducer that reduces the recoil felt by users of rifles and shotguns. In some embodiments, the recoil-reducer is comprised of a resilient plate that increases the area over which the recoil force is distributed, thereby reducing the force per unit area, and a compressible element that cushions the user from the force of recoil. Further recoil reduction is achieved through the inclusion of a third recoil reducing component: an inertia member that provides substantial inertia that must be overcome by the recoil force before such force can be transmitted to the user.

Abstract: A surface finishing apparatus for in-line outer surface polishing of elongate cylindrical metal stock to apply a long scratch finish, including a stock feeder for feeding a length of stock through the finishing apparatus from an infeed downstream to an outfeed position while rotating the stock about its longitudinal axis and a polishing assembly for finish-treating the outer surface of the stock as the stock is fed through the apparatus to apply a long scratch finish thereto. The polishing assembly includes a rotatable finishing wheel having a finish-treating peripheral surface for being applied in an in-line orientation against the outer surface of the stock as the stock is simultaneously fed and rotated through the finishing apparatus.