A system and related device emulates the behavior of mobile networks independently from the manner of collecting data about the behavior of the network obtained through a simulation of field measurements. The system emulates the behavior of the network during the exchange of information between terminals and uses an emulation device comprising two circuit blocks. The first is able to process the information according to time sequences corresponding to those of mobile networks. The second one exc...

A lock cylinder rotatable in a lock body has a cavity in its front, closed by a cap having a key aperture aligned with a keyway in the cylinder. A shutter in the cavity slides to and from a closed position blocking the key aperture, guided by a tongue on its rear received in a groove in the bottom of the cavity. A coiled expansion spring reacting between the cavity wall and the tongue is inclined to the cylinder axis to bias the shutter forward into sealing engagement with the rear surface of th...

A hydrocarbon conversion catalyst composition, useful for paraffin-olefin alkylation, can comprise a three dimensional crystalline zeolite molecular sieve having a pore size large enough to adsorb 2,2,3-trimethylpentane and having a composition expressed in terms of mole ratios of oxides as A(I.sub.2 O);b(IIO):c(III.sub.2/3 O):d(IV.sub.1/2 O)Al.sub.2 O.sub.3 :eSiO.sub.2 wherein I represents a monovalent metal cation; II represents a divalent metal cation; III represents a trivalent metal cation;...

In order to increase the amount of catalytic metal which can be incorporated in a zeolite catalyst by contact of zeolite with solution of a given amount of chemical containing the catalytic metal, or conversely to reduce the amount of such chemical needed to incorporate a given desired amount of catalytic metal in the catalyst, a zeolite containing a cation, e.g., sodium, replaceable by ammonium ion, is contacted with an aqueous solution of ammonium metalate, e.g., molybdate, and a second ammoni...

A cylinder lock assembly including a cylinder portion, a barrel portion rotatably disposed on the cylinder portion, a plastic cover support member disposed in a cavity at the outboard end of the barrel portion, the support member having a wall portion with a beveled edge protruding beyond the confines of the cavity, a cover disc disposed over the cavity and engaging the beveled edge of the wall portion, and a retaining ring attached to the cylinder portion and engaging the cover disc in line con...

A movable cover device for an automobile lock, comprising a plate supporting the lock operating actuator and fixed to a wall of an automobile compartment, and a cover pivoted on the plate, the device having in the cover an area substantially equal to that of the plate and is provided with a pivot substantially orthogonal to its wall and rotatably supported by a bush which is rigid with the plate and is also orthogonal to its wall, so that the walls of the plate and of the cover are in contact, a...

A cylinder lock with a cover that is held open with first and second engaging members during the time that a key is inserted in the lock. The lock further includes a mechanism for disabling the operation of a remote lock release device upon rotation in a predetermined direction of a key in the lock.

A cover mechanism for covering a lock, having a key opening, on a lock support surface includes a cover plate which may be pivoted between a closed position in which the key opening of the lock is covered, and an opened position in which the key opening is exposed. A detent arrangement engages the cover plate at a first point to hold it in its opened position until a key is inserted into the key opening and rotated towards an unlatching position, whereupon the detent arrangement engages the cove...

A lockable cover for the keyway of a cam-type lock, including an annular skirt attached to the body of the cam lock adjacent the inward end of the front-key way end of the lock. There is locking means for engaging the annular skirt, which locking means is generally rectangular and has a front wall with an aperture therein sufficient to accommodate the annular skirt adjacent which aperture there are latching heads of the lock which have an open configuration in which they are spaced apart suffici...

A motorcycle having a fork lock includes a cover which is adapted to be manually moved between a cover position where the cover overlies the fork lock and an uncovered position where the fork lock is exposed to allow a key to be inserted into the fork lock. The cover has a pivot member pivotally connecting the cover to the motorcycle to enable the cover to be rotated with respect to the fork lock to expose the fork lock so that the key may be inserted into the fork lock. A detent member maintain...