Abstract: A continuous process for producing strip products which comprises forming an aqueous slurry of a mixture of a metal powder and a film-forming cellulose derivative and producing from this slurry a self-supporting strip. This self-supporting strip is fed onto an endless moving belt by which the strip is transported into and through a sinter furnace. A tensile force is applied to the sintered strip in the direction of travel of the strip, and this tensile force is controlled such that the speed at which the strip leaves the furnace is greater than the speed at which the strip enters the furnace by an amount related to the expected or actual increase in strip length occasioned by expansion of the strip during the sintering process.

Abstract: An electromagnetic door lock system employs an electromagnetic lock which magnetically bonds with an armature plate. An acoustical sensor generates a detection beam. The detection beam is directed toward the doorknob. Reflected energy is received and electronically processed to detect the presence of a foreign object in the vicinity of the doorknob. The lock automatically deactuates when a foreign object is detected in the vicinity of the knob. The electromagnetic lock, sensor and processing circuitry are mounted in a housing which is located near the top of a doorway. An audio alarm and status light indicators are mounted at the housing to indicate the status of the lock.

Abstract: A method of producing strip comprising at least two material layers of different chemical composition bonded one to another, in which separate slurries of powders of different chemical compositions are formed in film-forming cellulose derivatives. Dried layers in strip form are produced from the slurries and these layers are fed, while under tension in interfacial contact, into the nip of a pair of compaction rolls to effect a mechanical bond between the layers. At least one of the strip layers may be subjected to a sintering operation prior to being fed into the nip of the compaction rolls.

Abstract: A process for producing strip from particulate metallic material in which a slurry comprising a suspension of particulate metallic material in a solution of water containing a film forming binder material is deposited as a coating onto a support surface and is heated to gel the binder and to dry the slurry coating, the dried strip subsequently being removed from the support surface and rolled to effect compaction thereof. The ratio of particulate metallic material to water content of the slurry lies within the range 3.4:1 and 4.2:1 to ensure good flowability of the slurry coating and to produce the required flat profile in the rolled strip.