Showing papers on "Flexible electronics published in 1969"
Patent•
24 Nov 1969
TL;DR: In this paper, a monolithic keyboard constructed in layers with inexpensive materials and which has no conventional moving parts is disclosed, in which the layers include a bottom or first layer of conductive material, a second layer of spongy material with holes cut therein and a third layer of flexible printed circuit.
Abstract: A monolithic keyboard constructed in layers with inexpensive materials and which has no conventional moving parts is disclosed. In one embodiment, the layers include a bottom or first layer of conductive material, a second layer of spongy material with holes cut therein, and a third layer of flexible printed circuit. This flexible printed circuit includes a sheet of insulating material with conductive pads placed thereunder in registration with the holes in the spongy material. Key symbols are etched on or printed over the conductive pads thereby indicating the placement of the keys. Depressing the key causes contact to be made between the respective pad and the first layer of conductive material. The spongy material gives the operator the ''''touch'''' of a standard typewriter keyboard.
17 citations
Patent•
05 Mar 1969
TL;DR: In this paper, a flexible printed circuit is represented by a base with a raised portion over which the printed circuit extends, a support member detachably engaged with the base by resilient arms 12a, and a contact holder 14 carrying at least one contact 15 in passages (not visible in the Figure) which have openings 19 for exposing the contacts to the printed circuits, the contact holder having at least 1 flexible member 14a for detachably engaging the holder with support member 12.
Abstract: 1,144,663. Tape-cable connector. JOSEPH LUCAS (INDUSTRIES) Ltd. 27 July, 1966 [11 Aug., 1965], No. 34324/65. Heading H2E. A connector for a flexible printed circuit 10 comprises a base 11 with a raised portion 11a over which the printed circuit extends, a support member 12 detachably engaged with the base by resilient arms 12a, and a contact holder 14 carrying at least one contact 15 in passages (not visible in the Figure) which have openings 19 for exposing the contacts to the printed circuit, the contact holder having at least one flexible member 14a for detachably engaging the holder with support member 12. Each contact 15 is crimped on to a conductor, has portions 17 to engage the printed circuit and has a portion 18 which engages in a groove in the passage in the contact holder to prevent withdrawal. As an alternative, member 12 may be attached to the base by bolts.
4 citations