# US 5,342,123 A · Detented frame door assembly

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- Number: US 5,342,123 A
- Document ID: US5342123A
- Status: Granted
- Kind: A
- Application number: 07/924,289
- Filed: 1992-08-03
- Granted: 1994-08-30
- Earliest claimed: 1992-08-03
- Assignees: International Business Machines Corporation
- Inventors: Phill D. Cole; David E. Southworth
- Web page: https://patentgrep.com/patent/US5342123A

## CPC

- G11B 33/005: {Means for locking the disc or cassette receiving slot, e.g. dummy cassettes locked in the slot}
- G11B 33/027: {Covers (G11B33/022 takes precedence; with means for guiding the record carrier G11B17/34)}
- Y10T 292/1062: Spring retracted
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A door forming a part of a closure assembly is attached to the frame of the closure assembly by engaging bifurcated branches of a pivot arm with a pivot shaft. One of the branches is extended to engage a curved leaf spring which is deformed as the door and the extension is pivoted about the shaft. The deformation of the spring is instrumental in exerting a force on the extension to detent the door in the closed position and the extension may disengage from the spring surface when in the open position. To further stabilize the door, a stabilizer is formed on the back of the door and it engages the end of a recessed channel in the assembly, at a point coincident with the pivot axis of the door.

## Claims

### Claim 1

A detented bi-stable closure assembly and container comprising:
a container having at least four sides and one open side;
a bezel assembly attached to said container to surround said one open side;
said bezel assembly comprising:
a closure covering said one open side;
at least an opening granting access to said open side of said container;
a frame engaged with said container;
said closure supported by said frame and pivotable between an open and a closed position, thereby opening and closing said opening, said frame defining at least said opening granting access to said open side of said container;
at least a pair of pivot shafts coaxially disposed on said frame and forming an axis of pivot for said closure;
detent means for detenting said closure comprising a leaf spring formed into a mounting portion and a curved portion having at least an external curved surface;
support means for supporting said detent means;
a pair of bifurcated arms extending from said closure;
each bifurcated arm having two branches defining a pivot surface therebetween, each said surface matingly engaged with one of said pivot shafts and moveable with respect thereto;
an extension formed onto one of said branches of each of said bifurcated arms and engaging said external curved surface when said closure occupies a closed position relative to said opening,
thereby maintaining said closure in a closed position.

### Claim 2 (depends on 1)

The detented bi-stable closure assembly and container of claim 1, wherein said extension is disengaged from said detent means when said closure occupies an open position relative to said opening.

### Claim 3 (depends on 1)

The detented bi-stable closure assembly and container of claim 1 wherein said extension is formed as a part of said bifurcated branch disposed intermediate said detenting means and said pivot shaft when said closure occupies an open position relative to said opening.

### Claim 4 (depends on 1)

The detented bi-stable closure assembly and container of claim 1 wherein said extension is formed as a part of one of said bifurcated branches to exert a force on said branch in a direction to further engage said said branch with said pivot shaft during at least a portion of the pivoting movement of said closure.

### Claim 5 (depends on 1)

The detented bi-stable closure assembly and container of claim 1 further comprising a recess formed into said bezel assembly with an open end and a closed end, said closed end lying between said pivot shafts,
and a stabilizing means extending form said closure and of such a length as to terminate proximate said pivot axis of said closure and within said recess, whereby said stabilizing means engages said recess and pivoting of said closure from a closed to an open position engages said stabilizing means with said closed end of said recess.