Closure fasteners – Bolts – Hooked end
Reexamination Certificate
2000-05-25
2002-04-23
Avila, Stephen (Department: 3617)
Closure fasteners
Bolts
Hooked end
Reexamination Certificate
active
06375235
ABSTRACT:
BACKGROUND OF THE INVENTION
In a principal aspect, the present invention relates to a latch mechanism for retaining a drawer mounted on telescopic slides in a cabinet. Mechanics' cabinets and tool cabinets typically are fabricated from sheet metal and include a cabinet enclosure with drawers mounted on telescoping slides. A typical example of such a construction is depicted in U.S. Pat. No. 4,681,381 and U.S. Pat. No. 5,435,640 which are incorporated herewith by reference.
Typically, in order to provide security for the contents within the cabinet drawers, a locking system is provided. The locking system will normally include a key actuated mechanism which enables locking the drawers in a closed position. Actuation or release of the key operated mechanism is necessary in order to release or unlock the drawers.
In addition to permanently locking the drawers in a closed position, it is also appropriate and desirable to provide a means by which the drawers will remain or be retained in a closed position unless positively opened by the mechanic or user of the cabinet. This is a desirable feature in a cabinet construction in order to preclude accidental opening of drawers thereby resulting in an unbalanced condition that would cause the cabinet to turn over due to the weight of tools and other items in the drawers acting as a cantilever weight causing the cabinet to tip. Additionally, it is desirable to provide a positive mechanism to maintain the drawers in a closed position so that the drawers will not accidentally open when the cabinet is, for example, being transported from one position to another. Also, it is desirable to keep the drawers in a closed, but not necessarily locked, position so that the drawers will not protrude unexpectedly or undesirably thereby posing a danger.
Thus, there has developed a need to provide a mechanism that is inexpensive, yet reliable, and which enables unlocked drawers to remain in the closed position unless positively opened. Certain mechanisms of this nature are depicted in the prior art. For example, U.S. Pat. No. 5,435,640 depicts a catch mechanism which maintains or holds a drawer in a closed position in a cabinet enclosure. The catch relies upon the elastomeric characteristics of the catch. In the event the elastomer material fails, however, the catch then fails. Thus, there has developed a need for an improved latch or safety catch mechanism for drawers which are not maintained in the locked position.
SUMMARY OF THE INVENTION
Briefly, the present invention comprises a latch mechanism for a sliding drawer mounted in a cabinet supported by telescoping slides. The latch mechanism is attached to the front side of the sliding drawer and includes a handle which extends over the front edge of the front side of the drawer as well as a section depending from the front edge and extending into the interior of the cabinet. Catch members are attached to the ends of the handle on the inside of the drawer and a biasing mechanism, such as a coil spring, biases the handle member so that the catch members are biased upwardly into position for engagement with strikes located on the inside of the cabinet enclosure adjacent the top front edge of the cabinet drawer when the drawer is in the closed position. The handle also includes tabs which interlock and engage the handle with the front panel or front side of the cabinet drawer.
By positioning the catch members at the opposite ends of the handle and between the front sides of the drawer, lateral movement of the handle is precluded thereby maintaining the handle in a stable yet pivotal position on the front edge of the cabinet drawer. Strikes are included on a section of each of the telescoping slides attached to the interior side wall of the cabinet.
Thus, it is an object of the invention to provide an improved latch mechanism which maintains sliding drawers in a cabinet in a closed position.
A further object of the invention is to provide a latch mechanism which is rugged, comprised of a very few number of parts, and which must be positively actuated in order to effect opening of a drawer.
Yet another object of the invention is to provide a latch mechanism which may be incorporated in the front handle of a drawer and which will automatically hold the drawer in a closed position when the drawer is moved to that closed position.
These and other objects, advantages and features of the invention is set forth in the detailed description which follows.
REFERENCES:
patent: 4681381 (1987-07-01), Sevey
patent: 5435640 (1995-07-01), Holcomb
patent: 5630630 (1997-05-01), Price et al.
patent: 5720535 (1998-02-01), Mehman
patent: 5775140 (1998-07-01), Hallsten
patent: 5785398 (1998-07-01), Park
Waterloo Medication Cart Series—Dual Sided Medication Cart brochure dated prior to May 25, 1999.
HON catalog, 310 Series Deep Full Suspension Files, p. 147, published prior to May 25, 1999.
Lista catalog, p. 10, dated prior to May 25, 1999.
Snap-on catalog depicting Roll Cab and Top Chest, pp. 26-27, date prior to May 25, 1999.
Bott Model R1 catalog and mobile cabinet dated prior to May 25, 1999.
Avila Stephen
Banner & Witcoff , Ltd.
Waterloo Industries Inc.
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