A segmented tire for resisting complete deflation after being punctured. The segmented tire includes a tire having an inside wall and an outside wall. An outer peripheral wall extends between and is integrally coupled to an outer edge of the inside wall and the outside wall. Each of the inside and outside walls has a generally circular shape and has a central area having a circular opening therein. An inner peripheral wall extends between and is integrally coupled to an edge of each of the openi...

A stent comprises a plurality of serpentine bands. Each serpentine band has alternating peak regions and trough regions and extends about substantially the entire circumference of the stent. At least one of the serpentine bands has a spline extending therefrom toward a serpentine band adjacent thereto. Serpentine bands which are adjacent one another are connected one to the other.

A firefighting segmented monitor for redirecting a trajectory of a pressurized fluid discharge towards a target comprises a flowpath with minimum convolutions. The monitor flowpath comprises in series a stationary segment and three rotating segments including a lower segment, a middle segment and an upper segment connected in series each of which comprises a predetermined curvature. The lower segment swivels in one axis about the stationary segment. A nonorthogonal swivel is arranged on each end...

An improved process for the preparation of segmented copolymers of polyolefins and poly(methacrylates) is disclosed.

An improved process for the preparation of segmented copolymers of polyolefins and poly(methacrylates) is disclosed.

A rigid hull boat made up of detachable bow and stern sections. These are joined at abutting transverse bulkheads: male locking lugs project from the bulkhead of the bow section, and these are received in corresponding recesses in the bulkhead of the stern section. The upper edges of the bulkheads are held together by a channel member through which bolts are passed. The interlocking elements eliminate side-to-side movement between the two bulkheads, and also prevent them from spreading apart at ...

A split piston in an internal combustion engine, having a base rockably secured to the connecting rod, and a detachable ring head which interfaces with the cylinder wall. The detachable ring head is snugly fitted onto a cylindrical extension of the base having an axis parallel to the cylinder walls, to allow removal on the head without removal of the engine crankshaft or connecting rod. The snug fit minimizes combustion gas losses and eliminates to need for gas tight seals, while allowing remova...

A threading or rethreading die made up of a plurality of complementary separable interfitting parts held together by a tension spring disposed around the exterior surface thereof which in use are separated from one another under the tension of the spring thereby enabling the die to be passed over a member to be threaded or rethreaded whereat the separating force is relaxed permitting the parts to re-engage on the member. The die is then turned to effect the cutting of the threads.

A method of fabricating a large area, multi-element contactor. A segmented contactor is provided for testing semiconductor devices on a wafer that comprises a plurality of contactor units mounted to a substrate. The contactor units are formed, tested, and assembled to a backing substrate. The contactor units may include leads extending laterally for connection to an external instrument such as a burn-in board. The contactor units include conductive areas such as pads that are placed into contact...

Mixed-signal circuitry, such as a digital-to-analog converter (DAC) device, performs a series of operation cycles. The circuitry has n circuitry segments (2.sub.1, 4.sub.1 to 2.sub.n, 4.sub.n) which together produce an analog output signal (I.sub.A -I.sub.B). In each cycle a transfer function morphing section (22) generates, in dependence upon a digital input signal (D1-Dm), a set of n segment control signals (T1-Tn) for application to respective ones of said segments to influence the produced a...