Guiding rail for a cabinet pull-out part

• US 7,452,040 B1
• Filed: 05/07/2007
• Issued: 11/18/2008
• Est. Priority Date: 05/07/2007
• Status: Expired due to Fees

• Current Assignee: Paul Hettich GmbH & Company KG (Halemeier GmbH & Co. KG)
• Original Assignee: Paul Hettich GmbH & Company KG (Halemeier GmbH & Co. KG)
• Inventors: Burgess, Thomas Edward III
• Primary Examiner(s): HANSEN, JAMES ORVILLE
• Application Number:
  US11/745,217
• Publication Number:
  US 20080278048A1
• Time in Patent Office: 561 Days
• Field of Search: 312/330.1, 312/333, 312/334.1, 312/334.7, 312/334.8, 312/334.44, 312/334.47, 312/319.1, 312/319.2, 384/20, 384/21
• US Class Current: 312/333
• CPC Class Codes: A47B 2210/0016 Telescopic drawer slide latch device
• CPC Class Codes: A47B 88/49 with double extensible guides or parts
• CPC Class Codes: A47B 88/493 with rollers, ball bearings, wheels, or the like
• CPC Class Codes: A47B 88/53 preventing unintentional closing, e.g. anti-pinch devices

Abstract

A guiding rail is described with a carcass rail, fixable to a cabinet carcass, a running rail, fixable to the cabinet pull-out part, a center rail slidably connecting the carcass rail to the running rail, permitting telescopic movement of the carcass rail, the center rail, and the running rail with respect to one another from a compressed position to an extended position, a blocking device, and an operating lug disposed in a rearward end of the running rail. The blocking device includes a rod, at least one first snap-in tooth projecting from the rod, a notch lever pivotally disposed at a rearward end of the center rail, and at least one second snap-in tooth associated with the notch lever. The first and second snap-in teeth engage associated components of the guiding rail such that the guiding rail is lockable in both the extended and compressed positions.

Claims

1. A guiding rail for a cabinet pull-out part, comprising:

a carcass rail, fixable to a cabinet carcass;

a running rail, fixable to the cabinet pull-out part;

a center rail slidably connecting the carcass rail to the running rail, permitting telescopic movement of the carcass rail, the center rail, and the running rail with respect to one another from a compressed position to an extended position;

a blocking device comprising

a rod extending longitudinally to the running rail, and being mounted within the running rail to be rotatable about a longitudinal axis,

at least one first snap-in tooth projecting from the rod transversely to the longitudinal axis engageable with a first opening in the running rail,

a notch lever pivotally disposed at a rearward end of the center rail,

at least one second snap-in tooth associated with the notch lever, engageable with a second opening in the carcass rail, and

a first spring biasing the at least one second snap-in tooth to engage the second opening in the carcass rail,

wherein, when the guiding rail is fully extended, the at least one first snap-in tooth rests against a forward face of the center rail, the first spring acts on the notch lever such that the at least one second snap-in tooth is biased in the direction of the carcass rail, and the at least one second snap-in tooth engages with the second opening in the carcass rail, thereby establishing a blocking action; and

an operating lug disposed in a rearward end of the running rail, wherein the operating lug acts upon the notch lever to release the at least one second snap-in tooth, thereby at least partially terminating the blocking action,

wherein the guiding rail is lockable both in the extended position and the compressed.

2. The guiding rail according to claim 1, wherein the at least one first snap-in tooth comprises two ore more snap-in teeth disposed on the rod a first distance from one another that differs from a second distance of openings in at least one of the center rail and the carcass rail for mounting-related reasons.

3. The guiding rail according to claim 1, further comprising:

two bearing blocks connected to the running rail via one or more fasteners, wherein the rod is connected to the running rail via the two bearing blocks.

4. The guiding rail according to claim 1, further comprising:

a second spring operable with the rod,

wherein the at least one first snap-in tooth is constantly loaded in the direction of the carcass rail by means of the second spring.

5. The guiding rail according to claim 1, further comprising:

a handle disposed on a forward end of the rod, wherein the handle is bent an angle with respect to the longitudinal axis of the rod.

6. The guiding rail according to claim 1, wherein, a forward end of the carcass rail defines a notch having an inlet slope that is situated in a displacement area of the at least one first snap-in tooth.