Joints and connections – Biased catch or latch – Leaf spring
Reexamination Certificate
1999-08-24
2001-02-27
Browne, Lynne H. (Department: 3629)
Joints and connections
Biased catch or latch
Leaf spring
C403S325000, C403S321000, C403S408100, C403S338000, C403S373000, C024S11500R, C024S459000
Reexamination Certificate
active
06193435
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an attachment device for a fitting designed to be flush mounted in a panel opening, using locks each consisting of a base that fits onto the fitting, and a sliding piston that comes into contact with the panel under the action of compression springs.
It is applicable particularly to flush mounting of a housing for an electric or electronic fitting (for example for a control and/or display device) in a panel window such that only the back face of the housing will be visible from the outside.
2. Discussion of the Background
The housing body, the cross-section of which is approximately the same as the cross-section of the window into which it fits, usually comprises a peripheral rim that acts as a stop at the housing limit stop, and secondly a joint cover that conceals the junction between the housing and the panel.
Many solutions have been proposed to lock the housing onto the panel when the housing is in the flush mounted position. Document FR 2 718 198 describes a locking device that makes use of elastic locks consisting of an attachment base plate and a sliding pusher acted upon by elastic means bearing on the attachment sole plate. The attachment sole plate is fitted onto the side walls of the fitting housing, whereas the thruster pushes on the back of the panel.
SUMMARY OF THE INVENTION
The purpose of the invention is to suggest locks which can be easily locked simply by pressing with fingers, without the need for any special tools. These locks can be adapted to suit different flush mounting panel thicknesses.
The locking device according to the invention is characterized by the fact that the piston comprises click fit pushers that engage into slots in the base, so that the piston fastens onto the base in the rest position, and releases the piston when the lock is released.
REFERENCES:
patent: 4453292 (1984-06-01), Bakker
patent: 4831694 (1989-05-01), Kong
patent: 4945849 (1990-08-01), Morris et al.
patent: 5361461 (1994-11-01), Anscher
patent: 5971119 (1999-10-01), Chi
patent: 2718798 (1995-10-01), None
Lafaye Michel
Pitault Gerard
Browne Lynne H.
Garcia Ernesto
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Schneider Electric SA
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