Browse Prior Art Database

Pinion Leg Lock Mechanism

IP.com Disclosure Number: IPCOM000040996D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Rachui, RA: AUTHOR

Abstract

The mechanism described and illustrated in Fig. 1 is a pinion lock mechanism that provides speed and ease of adjustment with necessary locking feature in either direction.

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Pinion Leg Lock Mechanism

The mechanism described and illustrated in Fig. 1 is a pinion lock mechanism that provides speed and ease of adjustment with necessary locking feature in either direction.

Stud 1 is locked on a stationary part 2 of the machine and holds a free to pivot knob 3, having two pins 4.

Grooves 5 in leg 6 are cut deeper toward one end so that rollers 7 will be free at the deeper end, but will wedge tightly toward the center at the shallow end. The rollers 7 are backed up by blocks 8 and springs 9. The wedging action in the two grooves takes place in either direction for the leg 6 about axis A.

The knob is free to pivot on the stud 1 which carries pins 4 which project into the grooves 5. There is a slight clearance between pins 4 and rollers 7, so the knob 3 will have a small amount of free movement. When the knob is moved in either direction the pin 4 contacts the roller 7 eliminating wedging action on that side. Wedging action on the other side only takes place in the opposite direction, so leg 6 is free to rotate with knob 3. Identical results occur in the opposite direction.

When knob 3 is released, wedging action of both rollers again lock leg 6 about axis A.

Since leg 6 is rotated and locked in either direction, an infinite number of positions are available.

(Image Omitted)

Disclosed anonymously

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