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Browse Prior Art Database

Latch Mechanism

IP.com Disclosure Number: IPCOM000096440D
Original Publication Date: 1963-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Bajgert, TA: AUTHOR [+2]

Abstract

This latch mechanism automatically latches and clamps two doors which move in different planes and are geared to open and close cooperatively.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 74% of the total text.

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Latch Mechanism

This latch mechanism automatically latches and clamps two doors which move in different planes and are geared to open and close cooperatively.

In A, handle 6 has downwardly extending portion 8 which is provided with slot
10. Links 12 and 14 have common pivot point 13 which is slidably mounted in slot 10. The other end of link 12 is pivotally mounted on door 16. The opposite end of link 14 is pivotally linked to one end of latch 18 by pivot pin 17. Latch 18 is in turn attached at pivot 20 to door 16. Cam 22 having strike portion 23 and pawl portion 24 is pivotally mounted on door 16 and is spring biased in a counterclockwise direction. In A, the doors are shown closed so that latch 18. is engaged with strike member 26.

To open the doors as in B, handle 6 is pulled upward, elevating pivot point 13 and causing links 14 and 12 to perform a scissor-like motion. Since latch 18 is fixedly pivoted at point 20 to door 16 it is caused to rotate with a clockwise motion. This brings it out of contact with member 26 and causes its upper pivot pin 17 to engage with pawl portion 24 of cam 22. As handle 6 is elevated further
(C) and doors 16 and 28 separate, cam 22 rotates with a counterclockwise motion fixing pivot pin 17 in pawl portion 24. Cam 22 thus acts to retain the latch mechanism in its open position.

In closing the doors, member 26 meets with portion 23 of cam 22 causing it to rotate in a clockwise direction, rotating cam 22 clockwise to release pivot p...