Takuo Hodama

US Patent:

40371166, Jul 19, 1977

Filed:

Aug 16, 1976

Appl. No.:

5/715130

Inventors:

Takuo Hodama - Watsonville CA

Assignee:

SBE Incorporated - Watsonville CA

International Classification:

H03K 1718
H01H 1958

US Classification:

307247A

Abstract:

A rotary switch is provided having a manually engageable control to which is attached an arm carrying a number of switch contact fingers for rotational motion with the control. A printed circuit board has concentric circular arrays of contact pads each of which are contacted by one of the finger contacts on the rotating arm. The outer array of contact pads are connected together and are located in a position counterclockwise from the center array of contact pads which are also connected together. The inner array of contact pads are also connected together and are located in a position clockwise from the array of center contact pads. An innermost continuous contact strip is provided for contact by one of the contact fingers. The contact fingers are electrically common and provide a repeated contact sequence for outer, center and inner contact pad sliding connections for a clockwise rotation of the manual control. The repeated sequence for counterclockwise rotation of the manual control is center, outer and inner contact pad sliding connection.

US Patent:

47867914, Nov 22, 1988

Filed:

Feb 10, 1987

Appl. No.:

7/012944

Inventors:

Takuo Hodama - Watsonville CA

Assignee:

Gateway Technology - San Francisco CA

International Classification:

G06K 708

US Classification:

235449

Abstract:

A data card using a simulator for magnetic stripes in generating a data signal. The data signal is read by a magnetic coil, having a drive signal provided to the coil by a circuit on the card which simulates the magnetic flux reversals of the magnetic stripes.