Chomerics, Inc.

Amp LLC

William J Lynn

Richard E Seeger, Jr

John R Rowlette

Ronald A Dery

Warren C Jones

Kazutoyo Fukukura

Vincent Squitieri

John Price

An anisotropically conductive adhesive composition (10) for use in electrically connecting at least one conductive area (14) on one substrate (12) with at least one conductive area (20) on a second substrate (18) is disclosed. The composition (10) is comprised of a mixture of conductive particles and a nonconductive adhesive binder (26). The conductive particles are dispersed throughout the binder in a plurality of noncontiguous conductive units (24) such that, upon applying a layer (30) of the composition (10) over both the conductive and insulating areas (14, 16) on one substrate (12) and positioning in a conducting relationship and adhering said at least one conductive area (20) on the second substrate (18) with said at least one conductive area (14) on the first substrate (12), the units (24) establish electrical connection between the adhered conductive areas (14, 20) on the two substrates (12, 18). The units (24) are sufficiently spaced apart, however, to preclude electrical conductivity between adjacent areas on the same substrate. A method for electrically connecting conductive areas on two substrates by means of said anisotropically conductive adhesive composition (10) and products produced by said method are also disclosed.

Anisotropically conductive adhesive composition

Membrane switch comprises a substrate having first, second, and third switch contacts thereon. A flexible insulating film extends parallel to the substrate and has a commoning conductor on its underside. The flexible film has first and second contact projections extending towards the substrate, the first contact projection being against the first switch contact and the second contact projection being spaced from the second switch contact. A pair of supporting projections extend from the film and bear against the surface of the substrate at locations adjacent to the switch contacts. The film is supported by the first contact projection and the air of supporting projections. When the film is pressed towards the substrate, the second contact projection sequentially moves against the second switch contact and thereafter the commoning conductor is moved against the third switch contact.

Membrane switch with sequentially closable contacts

Keyboards having flexible plastic domes which snap when depressed to provide tactile feel, at least some of said domes formed from a sheet of plastic and having a bar shaped concave snap initiator formed in said dome, and an actuator comprising at least one cross bar for engaging the snap initiator to initiate dome depression in situations in which the actuator used to depress the dome does not effectively produce snapping of the conventional dome because of the shape of the actuator.

Keyboard switch assembly having flexible contact layer with snap

Keyboard for a calculator or a combined calculator and watch or similar

An electrical interconnector for coupling circuit board terminals or the like to a liquid crystal package terminal, circuit board terminals, integrated circuit terminals, etc., and which includes an insulator support e.g., having at least two surfaces to which electrically conductive plastic strips are attached. There is also disclosed a new and improved method particularly suitable for attaching said strips to said surfaces around a corner as well as for attaching said strips to other shaped bodies.

Method of forming an interconnector

A keyboard device which includes a frame having a plurality of bores in which there is positioned a core for slideable motion therein, and a keyboard top positioned over the bores and preferably sealing each of the cores within the bores of the frame so that no particles of food or dust can accumulate between the cores and the frame while still permitting the cores to be depressed to cause a contactor means to engage contact means. In the preferred embodiment the cores are loose within the bores and are held therein from the top by said keyboard top. In addition, a mask to simulate the appearance of a frame about the portions of the top is provided. In addition, the preferred embodiment is sealed on the top and bottom to protect the in words from the environment.

Growing community of inventors

Groveland, MA, United States of America

William J Lynn