| Patent Number |
Title Of Patent |
Date Issued |
| 4029375 |
Miniature electrical connector |
June 14, 1977 |
| A flat electrical connector employing axially compressed helical springs for contacts. The springs float in a housing between two flanking insulative members having printed circuit contact areas to mate with each end of each spring. The connecting force required to press one insulative |
| 4029169 |
Acoustic yoke |
June 14, 1977 |
| A "U" shaped yoke for retaining a pair of ear couplers to the ears of an individual at a minimum effective pressure in an acoustic system. A pair of right-angle horns carry the ear couplers and are rotatively mounted at the extremities of the U to allow optimum adjustment of the couplers |
| 4028491 |
Transducer switching system |
June 7, 1977 |
| A transducer switching system for, in effect, removing electrical energy from a transducer without breaking the electrical circuit. A resistor is in series with the transducer. An electro-mechanical switch shunts the resistor. The switch is within the enclosure containing the transducer. |
| 3999721 |
Spindle hub |
December 28, 1976 |
| A hub for driving a reel of tape, having a resiliently mounted radially expandable key for nesting in a keyway of the axial hole in the reel. The reel may be placed upon the hub in any circumferential relation with one hand and relative rotation will cause the key to move radially outwar |
| 3977590 |
Cooled roller |
August 31, 1976 |
| A roller for operation in a gaseous environment, perhaps containing solid particles; the roller requiring cooling. A central axial cylindrical aperture surrounding a shaft upon which the roller rotates has a continuous helical groove that extends the full length of the aperture. Upon |
| 3974434 |
Stepping motor signal circuit |
August 10, 1976 |
| A plural phase stepping motor control circuit in which damping is accomplished by energizing a previously energized phase prior to the expiration of the power cycle on a pair of other phases. The duration of the damping pulse is inversely proportional to the speed of operation. The l |
| 3965406 |
Stepping motor damping circuit |
June 22, 1976 |
| A plural phase stepping motor control circuit in which damping in accomplished by energizing a previously energized phase prior to the expiration of the power cycle on a pair of other phases. The duration of the damping pulse is inversely proportional to the speed of operation. The l |
