Abstract: A copper-free friction material composition for a brake lining includes a fibrous form of an aluminum magnesium alloy, and a solid lubricant having a sulfur. The friction material composition can be disposed over at least a region of a backing plate of a brake pad to form a brake lining. The aluminum magnesium alloy contains about 4.5% to about 5.6% magnesium by weight. The friction material composition includes, by weight, about 5% to about 6% of the solid lubricant, about 5% to about 9.75% of the fibrous form of an aluminum magnesium alloy, about 7% to about 10% of an organic filler composition, and about 13% to about 17% of an abrasive composition, and can also include an inorganic filler, and a binder that develops the other components in the friction material composition into a thermosetting matrix. The friction material composition has a dynamic coefficient of friction of about 0.43.

Abstract: A copper-free friction material composition for a brake lining includes a fibrous form of an aluminum magnesium alloy, and a solid lubricant having a sulfur. The friction material composition can be disposed over at least a region of a backing plate of a brake pad to form a brake lining. The aluminum magnesium alloy contains about 4.5% to about 5.6% magnesium by weight. The friction material composition includes, by weight, about 5% to about 6% of the solid lubricant, about 5% to about 9.75% of the fibrous form of an aluminum magnesium alloy, about 7% to about 10% of an organic filler composition, and about 13% to about 17% of an abrasive composition, and can also include an inorganic filler, and a binder that develops the other components in the friction material composition into a thermosetting matrix. The friction material composition has a dynamic coefficient of friction of about 0.43.

Abstract: A security gate or closure for securing an access opening or fire escape against unauthorized entry defined by a frame circumscribing the opening to be secured; a closure therefor; and a locking bar for securing the closure without a key lock which will prohibit and/or deter unauthorized entry and which can be quickly opened to provide for rapid exit in case of fire or other emergency situations.

Abstract: A theft proof lock which includes a protective sleeve rotatively disposed relative to a lock cylinder so that the protective sleeve is free to rotate whenever a torque or turning movement is imparted thereto by one attempting to tamper with the lock to secure against unauthorized access to the lock secured premises and thereby prohibiting such tampering from defeating the lock.