Browse Prior Art Database

Cover Latch

IP.com Disclosure Number: IPCOM000090885D
Original Publication Date: 1969-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Lockhart, MA: AUTHOR [+2]

Abstract

The cover latch provides positive engagement both at the top and bottom of cover 10 with respect to frame 12 of the unit to which it is attached. Elongated latch rods 14 and 16 have gear teeth 18 located along one surface. Rods 14 and 16 are mounted such that these geared surfaces are in contact with pinion gear 20. The latter is rotated by handle 22 which latches and unlatches cover 10. Handle 22 is shown in down position. The rotation of handle 22 to the down position causes a clockwise rotation of gear 20 which in turn forces rod 14 upward and rod 16 downward. This motion of rods 14 and 16 forces their outer ends into cam strikes 24 thus pulling door 10 into positive engagement with frame 12. Rotating handle 22 to the up or extended position causes a counterclockwise rotation of gear 20.

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Cover Latch

The cover latch provides positive engagement both at the top and bottom of cover 10 with respect to frame 12 of the unit to which it is attached. Elongated latch rods 14 and 16 have gear teeth 18 located along one surface. Rods 14 and 16 are mounted such that these geared surfaces are in contact with pinion gear
20. The latter is rotated by handle 22 which latches and unlatches cover 10. Handle 22 is shown in down position. The rotation of handle 22 to the down position causes a clockwise rotation of gear 20 which in turn forces rod 14 upward and rod 16 downward. This motion of rods 14 and 16 forces their outer ends into cam strikes 24 thus pulling door 10 into positive engagement with frame 12. Rotating handle 22 to the up or extended position causes a counterclockwise rotation of gear 20. Such motion removes rods 14 and 16 from cam strikes 24 thus allowing cover 10 to be opened.

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