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Latch for a laboratory apparatus

  • US 4,978,153 A
  • Filed: 06/29/1989
  • Issued: 12/18/1990
  • Est. Priority Date: 06/29/1988
  • Status: Expired due to Term
First Claim
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1. A latch for a laboratory apparatus, for locking a closing panel to its housing, havinga hook (12) in one of said panel and said housing anda lock (1) in the other of said panel and said housing, said lock having a pivotable locking element (3) with a claw-shaped opening (9) which engages the hook against the pressure of a spring (17) and which is releasable from engagement with the hook (12) by an actuating element (7),comprising, in accordance with the invention,a closing element (4), which engages said locking element (3) under spring force, andan opening element (5), which engages a portion (21) of said actuating element (7) and acts on closing element (4),said opening and closing elements being pivotably disposed between said locking element (3) and said actuating element (7), for movement between a locking position and an opening position;

  • a securing element (6), which engages opening element (5) and locking element (3), pivotably abutting opening element (5) under spring tension, disposed between said opening element (5) and said locking element (3),and wherein pivot axes (8) of locking element (3), closing element (4), opening element (5), and securing element (6) run parallel to one another, wherein opening element (5) has at one end a guide surface (25) for securing element (6), and at the other end a locking nose (23) which in said locking position fits behind a projection (24) on closing element (4),wherein securing element (6) has a retaining nose (28) in a middle area of a guide surface, into which nose a cam (26) of opening element (5) engages in the opening position,wherein closing element (4) has a first groove (13) at an end opposite opening element (5) in the locking position, into which groove (13) a first projection (10) of locking element (3), which delimits the claw-shaped opening (9) on one side, engages,and wherein securing element (6), on a pivot side which is opposite guide surface (27) and retaining nose (28), is releasably pivotable by an actuating cam (30) on locking element (3) in the opening position, releasing retaining nose (28) of securing element (6) out of engagement with opening element (5).

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