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Button Clutch Disclosure Number: IPCOM000036865D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 43K

Publishing Venue


Related People

Rachui, RA: AUTHOR


Disclosed is a tilt adjustment that is economical and has human factors enhancements.

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Button Clutch

Disclosed is a tilt adjustment that is economical and has human factors enhancements.

The mechanism consists of a leg, plunger, shaft, and a roll pin. The leg 1 is constructed having an inverted cone-shaped cavity 2 with a clearance hole on axis "A" (see the figure). The plunger 3 has a mating cone shape to that of the leg attached to the plunger shaft 4 through a roll pin 5. The roll pin goes through the plunger 3 and into the plunger shaft 4. Axial support 6 of the shaft is provided by the body housing that the mechanism will support. Attraction between leg 1 and plunger 3 is by way of magnets 7 and 8 having opposite charge embodied within the housing. As the operator disengages the plunger 3 from the leg 1, the force that the operator receives becomes weaker which enhances human factors, whereas when the plunger and leg are engaged, the force is at maximum strength.

Rotation of the leg 1 is restricted by the frictional force supplied by the plunger through attraction of magnets 7 and 8. The contact surface 9 of the plunger 3 engaging the leg is such that slippage will occur if excessive force is experienced but does not during functional operation so no damage to the mechanism is allowed.


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