Latch mechanism for folding table leg

• US 5,365,861 A
• Filed: 01/14/1992
• Issued: 11/22/1994
• Est. Priority Date: 01/14/1992
• Status: Expired due to Term

• Current Assignee: Ditto Sales Incorporated
• Original Assignee: Ditto Sales Incorporated
• Inventors: Gutgsell, David R.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US07/820,511
• Time in Patent Office: 1,043 Days
• Field of Search: 108/131, 108/132, 108/133, 292/80, 292/87, 292/263, 292/303, 248/439, 248/188.6, 403/329
• US Class Current: 108/132
• CPC Class Codes: A47B 2200/0037 Folding tables whereby each pair of legs and modesty panel are swung against the underside of the desktop
• CPC Class Codes: A47B 2200/12 Vanity or modesty panels
• CPC Class Codes: A47B 3/0812 the resilient force of the elastic locking means acting in a direction parallel to the axis of rotation of the leg
• CPC Class Codes: Y10T 292/1091 Spring-arm catch

Abstract

A latch mechanism for a folding table in which the table includes stowable legs, a modesty panel and a horizontal table top supported by the legs. The latch mechanism latches the legs of the table into an upright position. The latch mechanism includes a pin rigidly fastened to a leg of the table such that the tip of the pin projects away from the leg. A cantilever spring plate defining a bore sized to receive at least a portion of the tip of the pin therethrough is attached to the modesty panel of the table. The bore of the spring plate aligns with the pin when the table is opened to its upright position. The cantilever spring plate includes a bend which resiliently biases the spring plate away from the modesty panel. The pin is freed from the bore allowing the legs of the table to move to their stowed position when the spring plate is moved toward the modesty panel against the biasing action of the cantilever spring plate.

Claims

1. A latch mechanism for a folding table that includes stowable legs, a modesty panel and a horizontal table top supported by the legs, the latch mechanism latching the legs of the table into an upright position, the latch mechanism comprising:

a pin having a base and a tip, said base being rigidly fastened to a leg of the table such that said tip projects away from said leg;

a spring plate defining a bore sized to receive at least a portion of said tip of said pin therethrough, said spring plate being attached to said modesty panel such that said pin aligns with said bore when the table leg is opened to its upright position;

a bracket attached to said modesty panel, said bracket defining a backstop surface positioned adjacent said bore of said spring plate to contact said pin when said pin is aligned with said bore;

means for resiliently biasing said spring plate away from said modesty panel and against said pin when the table leg is in its upright position to continuously urge said pin against said backstop; and

whereby said pin is freed from said bore allowing said legs of the table to move to their stowed position when said spring plate is moved toward said modesty panel against the action of said means for resiliently biasing.

2. The latch mechanism of claim 1 wherein said spring plate is cantilevered and has first and second ends, said first end being attached to said modesty panel and said second end being free;

and

said means for resiliently biasing includes a bend in said plate between said first end and second end.

3. The latch mechanism of claim 2 further comprising means for guiding said pin to align with said bore when said leg is moved from its stowed position to its upright position.

4. The latch mechanism of claim 3 wherein said means for guiding includes said bracket attached to said modesty panel, said bracket including a V-shaped notch positioned to engage said pin when said pin is approaching said bore.

5. The latch mechanism of claim 4 wherein said backstop surface is at the vertex of said V-shaped notch.

6. The latch mechanism of claim 5 wherein said pin includes a groove that receives a portion of said V-shaped notch therein when said pin is aligned with said bore.

7. The latch mechanism of claim 6 wherein said tip of said pin is tapered.

8. The latch mechanism of claim 7 wherein said plate has a cantilevered length defined by the distance between said bend and said bore, said cantilevered length being sufficiently long that said spring plate makes substantially horizontal contact with said pin.

9. A folding table comprising:

a horizontal table top;

four legs each having one end pivotally attached to said table top and being movable between a stowed position and an upright position;

a vertical modesty panel attached along one edge of said table top such that two of said four legs are adjacent said modesty panel when said two legs are in said upright position;

a latch mechanism for locking at least one of said two legs in said upright position, said latch mechanism including a pin attached to one of either a leg or said modesty panel and a spring plate attached to the other of said leg or said modesty panel;

said spring plate having an edge biased to an outward position away from said other of said leg or said modesty panel but being depressible from said outward position;

said pin having a tapered tip that engages said edge of said spring plate when said leg is in said upright position; and

wherein said edge of said spring plate is continuously resiliently urged toward said outward position against the tapered tip of said pin when said leg is in said upright position.

10. The folding table of claim 9 wherein said pin is attached to said leg and said spring plate is attached to said modesty panel.

11. The folding table of claim 10 further comprising a backstop attached to said modesty panel and positioned to contact said pin when said leg is in said upright position such that said edge of said spring plate resiliently urges said pin against said backstop.

12. The folding table of claim 11 wherein:

said modesty panel is pivotable to a stowed configuration;

said pin includes a groove; and

said backstop is a portion of a bracket attached to said modesty panel, said bracket includes a rim that is received in said groove when said leg is in said upright position such that said modesty panel is unable to pivot toward said stowed configuration.

13. The folding table of claim 9 wherein said edge is a portion of an annular edge that defines a bore in said spring plate, and said tapered tip is at least partially received in said bore when said leg is in said upright position.

14. A latch mechanism for a folding table having stowable legs, a modesty panel and a horizontal table top supported by the legs, the latch mechanism latching a leg of the table into an upright position, the latch mechanism comprising:

an elongated spring plate with one end attached to the modesty panel and an opposite other end resiliently biased away from the modesty panel toward the leg when the leg is in its upright position, said spring plate including an edge located adjacent said other end;

a pin having a tip and being rigidly fastened to a leg of the table such that said tip projects away from the leg, said tip engaging said edge of said spring plate when the leg is in its upright position; and

a bracket attached to said modesty panel, said bracket including a backstop surface positioned to contact said pin when said leg is in said upright position such that said pin is engaged between said backstop surface and said edge of said spring plate, when said edge of said spring plate is continuously resiliently urged against said pin when the leg is in its upright position.

15. The latch mechanism of claim 14 wherein:

said spring plate has a width at said other end; and

said bracket defines a channel slightly wider than said width to receive said other end therein when said bracket is attached to the modesty panel about said spring plate, said other end of said spring plate being confined by said bracket to movement in and out of said channel.

16. The latch mechanism of claim 15 wherein said pin includes a groove and said bracket includes a rim that is received in said groove when said leg is in said upright position such that the modesty panel is unable to move with respect to the leg.

17. The folding table of claim 14 wherein said edge is a portion of an annular edge that defines a bore in said spring plate, and said pin has a tapered tip that is at least partially received in said bore when said leg is in said upright position.