A thorough error suppression signal measurement system (20) having a transmitter (300) for propagating a transmission signal to a first probe 100, through a device under test (26), and into a second probe (200), and for propagating reference signals to the probes (100,200). The probes (100,200) extract normalization signals from the reference signals, exchange specific ones of the normalization signals, and combine the normalization signals with data signals derived from the transmission signal ...

The invention includes a tractor and a trailer wherein the tractor is provided with front and rear hitch members and the trailer with corresponding front and rear tongue members relatively arranged so that when releasably connected together the tractor and trailer are held in a parallel side by side relation against relative movement. The trailer has a pair of front caster wheels and a rear wheel so as to be movable as a unit with the tractor.

A microprocessor-based telephone having a housing, a lower key panel positioned within a top portion of the housing, and an upper key panel hingedly mounted to the housing to swing away and reveal the lower key panel. The lower key panel carries an alphanumeric keyboard thereon to enable a user to perform alphanumeric data entry. The upper key panel carries a telephone keypad to enable a user to dial telephone numbers.

An animal gate latch mechanism having upper and lower latch units movable successively and alternatively between gate open and gate latching positions therefor by a linkage system including a single actuating arm. From a gate open position of both latch units, movement of the actuating arm in one direction will independently move the latch units to the gate latching positions therefor. An intermediate latched condition of the gate is thus provided which can quickly and easily be effected by an o...

A system for reading a data record stripe on a credit card which includes an injection molded case including a card guide slot integrally molded into the case near one side thereof and a read head window integrally formed in one sidewall of the card guide slot. A data read head assembly having a read head on a front face thereof is mounted in the read head window and is spring biased toward the wall of the card slot opposite the read head window. A circuit arrangement is coupled to the read head...

A venting unit is inserted in a press fit within the air vent of a rubber article forming mold and is comprised of a cylindrical body member with an axial bore having a reduced outer end section forming an air inlet open to the mold cavity. Received for reciprocal axial movement within the bore between an inlet closed position in abutting engagement with the outer end section and an inlet open position removed from the outer end section is a heat absorbing piston or disc. The opposite or inner e...

The method of this invention provides for the molding of a composite article such as a woven seat for use in furniture or automobiles wherein a woven fabric material and a plastic frame structure coact to enhance their respective strength characteristics. The fabric material is maintained under tension during the molding operation concurrently with the perimetral portion thereof being imbedded in a bonded relation with the frame structure. The strength characteristics of the woven fabric materia...

A device for use in oral and dental hygiene wherein an oral irrigator is provided for connection to a conventional syringe or the like for applying fluid under pressure to the irrigator. The irrigator has a downwardly tapered tip with one or more longitudinally formed channels fluidly connected to the fluid supply syringe, with the remaining circumference of the irrigator tip capable of holding away the gum tissue, whereby irrigating fluid under pressure is applied into the base of a periodontal...

A bicycle carrier mounted at the rear end of a vehicle for transporting from one to four bicycles having demountable front wheels. The carrier includes a lower rack rearwardly of the vehicle and an upper rack supported by the lower rack above the rear trunk of the vehicle. Each rack includes an elongated horizontally mounted frame extended transversely of and within the transverse confines of the vehicle. Mounted on each frame associated with each bicycle to be carried thereon is an upwardly fac...

An improved surge braking mechanism for trailer vehicles including a brake shoe carried on a lever plate by an articulated linkage system. The braking mechanism moves the lever plate to bring the brake shoe into braking engagement with a brake drum of the trailer vehicle in response to the forward inertia of the trailer vehicle during braking. When the inertia of the trailer vehicle is either neutral or rearward, the braking mechansim acts to take the brake shoe out of braking engagement with th...