Abstract: A trailer hitch lock is disclosed that is particularly useful for preventing the theft of trailers that utilize pintle-type hitches. The lock includes a pair of steel plates which are hinged at one end. An upstanding steel projection is located substantially at the center of the interior of one of the plates. When the plates are pivoted toward their closed position, the pin fits within the opening of the trailer hitch pintle. The forward end of each of the plates includes a flat steel locking flange extending toward the other plate. Each steel locking flange has a hole passing therethrough which cooperates with the other when the plates are in their closed positions so that a padlock can be passed therethrough to maintain the device in a closed position. Located to either side of these cooperating locking flanges are a further pair of steel guards which protect the padlock by preventing a cutting tool from reaching the padlock.

Abstract: A wireless communications system is depicted in which a message can be delivered to a wireless device. In the communications system, a first number included within a true address for communication with the device is associated with the device. A second number distinct from the first number is also associated with the device. A communication is received that includes a phantom address, at least a portion of which includes the second number, and a message. The true address is derived by at least deriving the first number from the second number. The message can then be delivered to the device based upon the derived true address.

Abstract: The invention relates to a golf tee (10) which includes a writing point (18) and an eraser (12). In a preferred embodiment, tee (10) has shaft (11) and head (12), shaft (11) tapering from head (12) to end (13). Received in cylindrical bore 17 is writing point 18 having free end 19. Hollow bore 16 is adapted to receive end 13A of second tee 10A, thus protecting writing point 18A. Circumferential rim (14) defines a hollow depression (15) which is intended to aid in support of a golf ball.

Abstract: Zeolites containing gallium in their crystalline framework structure are prepared by treating a zeolite material with a reagent capable of replacing a part of the aluminum of the framework structure of the zeolite material with the gallium. The method is especially applicable for the preparation of faujasitic materials of the formulaM.sub.(x+y/n) [ALO.sub.2 ].sub.x [GaO.sub.2 ].sub.y [SiO.sub.2 ].sub.zwherein:M is a charge balancing ion and n is the oxidation state thereof,x, y and z are the respective numbers of tetrahedra represented respectively by AlO.sub.2, GaO.sub.2 and SiO.sub.2,x+y+z=192, for a said faujasitic structure with no missing tetrahedra,x+y is from 0.1 to 71 inclusive, andy is from 0.01 to 60 inclusive.