Build a Mold Limited

Other

Horst Schmidt

Sazzadur Chowdhury

An integrated circuit includes stacked benzocyclobutene layers and a circuit geometry comprising conductive electric traces and interconnects on and/or extending through the BCB layers. A first said BCB layer formed and partially cured state. A top surface masked with photoresist, and after exposure, etched selectively form through vias at locations corresponding to conductive interconnects of the circuit geometry associated with said first BCB layer. A further mask coating is applied and after exposure, conductive metal is deposited to infill vias and form the electric traces of the circuit geometry. Subsequent BCB layers are then likewise formed, etched masked and coated in the same manner.

Layered benzocyclobutene interconnected circuit and method of manufacturing same

A simplified wheel-lift mechanism is disclosed. The components of the wheel-lift mechanism are all formed of a plastic material that is corrosion resistant. Further, the wheel-lift mechanism includes a one-piece flexible coupling which reduces the complexity of the system over prior art systems. The one-piece flexible coupling includes a plurality of integrally molded discs connected by a plurality of circumferentially-spaced integrally molded posts. This results in a strong coupling which allows relative angular motion between the ends of the coupling. In a further feature of this invention, a locking key is operable to lock the wheel hub at a particular location. The locking key is selectively released to allow the wheel to be lowered. A unique drive mechanism is also included.

Wheel-lift mechanism

A high density closed-cell foam burial vault is disclosed. The vault consists of top and bottom halves which are formed of a closed-cell foam having a density between 8-30 pounds per cubic feet. The foam is sufficiently rigid to protect a casket within the burial vault, and is also resistant to leakage of water into the vault. The foam results in a lightweight, easy to manufacture burial vault. The top and bottom halves nest within each other, such that a large number of foam burial vaults may be stored in a relatively small space.

High density foam burial vault

A wheel-lift mechanism is disclosed which incorporates a unique torque limiting structure. A drive is transmitted to a first shaft, which is in turn transmitted to a second shaft. The second shaft drives a reel for raising and lowering a flexible lift member and an attached wheel hub from beneath a vehicle. The torque limiting structure consists of an outer drive member which has an inner periphery including a plurality of ears which are received within notches in an inner driven member. The first shaft rotates the outer drive member and the inner driven member in turn rotates the second shaft. Should the relative torque transmitted from the first shaft to the second shaft exceed a predetermined limit, the ears deform the notch radially inwardly and the outer drive member slips relative to the inner driven member. Nodes are positioned radially outwardly of the notches on each circumferential side. A space is formed radially inwardly of the notch in the inner driven member. The space facilitates the bending of the notch radially inwardly. The space further has portions which conform to the shape of the nodes. The nodes deform radially inwardly to facilitate slippage of the ears around the nodes, and allow each ear to become aligned with a circumferentially-spaced subsequent notch once slippage does occur.

Torque limiter for wheel-lift mechanism

A one-piece flexible coupling is integrally molded from plastic. A plurality of discs are connected by posts over small circumferential extents with slots formed over the remainder of the circumferential extent of the discs. The posts between adjacent discs are offset by 90.degree. from the previous and subsequent discs. Shafts are connected at both ends of the flexible coupling, and the flexible coupling transmit rotation between the shafts, even when they are at non-parallel angles relative to each other.

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Windsor, CA, United States of America

Horst Schmidt