Biscuit and joint made using same

• US 5,458,433 A
• Filed: 12/09/1994
• Issued: 10/17/1995
• Est. Priority Date: 02/03/1993
• Status: Expired due to Fees

• Current Assignee: James M. Stastny
• Original Assignee: James M. Stastny
• Inventors: Stastny, James M.
• Primary Examiner(s): Knight, Anthony
• Application Number:
  US08/352,454
• Time in Patent Office: 312 Days
• Field of Search: 403/297, 403/292, 403/294, 403/408.1, 403/403, 144/353, 144/136 C
• US Class Current: 403/408.1
• CPC Class Codes: A47B 2230/0059 Biscuits
• CPC Class Codes: B27F 5/02 Slotting or mortising machines tools therefor
• CPC Class Codes: F16B 12/04 Non-loosenable joints for non-metal furniture parts, e.g. glued
• CPC Class Codes: Y10T 403/55 Member ends joined by inserted section
• CPC Class Codes: Y10T 403/553 Laterally inserted section
• CPC Class Codes: Y10T 403/75 having a joining piece extending through aligned openings in plural members

Abstract

A biscuit having an octagonal outer periphery is used to form a joint between first and second workpieces. The biscuit fits within arcuate slots formed in the workpieces, with glue placed in the slots and/or on the biscuit before the joint is put together. The biscuit is made of an anhydrous compressed wood.

Claims

1. A biscuit for use with a first workpiece having a first arcuate slot formed therein and a second workpiece having a second arcuate slot formed therein, said biscuit comprising:

a substantially planar member having a periphery defined by a plurality of diametrically opposed and parallel sides, said periphery defining a plurality of corners at intersections of adjacent sides, wherein said planar member is positionable within both said first arcuate slot of said first workpiece and said second arcuate slot of said second workpiece with said corners abuttingly engaging the arcuate walls of said arcuate slots to define fluid spaces between said walls and said sides such that an adhesive can reside within and adhesively engage said sides and said walls to couple said planar member to said workpieces to join said workpieces together.

2. The biscuit of claim 1, wherein said planar member is formed of a substantially anhydrous compressed wood wherein said biscuit expands upon exposure to an adhesive.

3. A biscuit for use with a first workpiece having a first arcuate slot formed therein and a second workpiece having a second arcuate slot formed therein, said biscuit comprising:

a substantially planar member having an octagonal periphery defined by a first pair of sides positioned in a diametrically opposed and parallel relationship to one another, a second pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned adjacent said first pair of sides, a third pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned adjacent said second pair of sides, and a fourth pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned between said first pair of sides and said third pair of sides, said octagonal periphery defining a plurality of corners at intersections of adjacent sides, wherein said planar member is positionable within both said first arcuate slot of said first workpiece and said second arcuate slot of said second workpiece with said corners abuttingly engaging the arcuate walls of said arcuate slots to define fluid spaces between said walls and said sides such that an adhesive can reside within and adhesively engage said sides and said walls to couple said planar member to said workpieces to join said workpieces together.

4. The biscuit of claim 3, wherein said planar member is formed of a substantially anhydrous compressed wood wherein said biscuit expands upon exposure to an adhesive.

5. A biscuit joint comprising:

a first workpiece having a first arcuate slot formed therein;

a second workpiece having a second arcuate slot formed therein;

a substantially planar member having an octagonal periphery defined by a first pair of sides positioned in a diametrically opposed and parallel relationship to one another, a second pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned adjacent said first pair of sides, a third pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned adjacent said second pair of sides, and a fourth pair of sides positioned in a diametrically opposed and parallel relationship to one another and positioned between said first pair of sides and said third pair of sides, said octagonal periphery defining a plurality of corners at intersections of adjacent sides, wherein said planar member is positioned partially within both said first arcuate slot of said first workpiece and said second arcuate slot of said second workpiece with said corners abuttingly engaging the arcuate walls of said arcuate slots to define fluid spaces between said walls and said sides;

and,

an adhesive residing within said fluid spaces and adhesively engaged to both said sides and said walls to couple said planar member to said workpieces to join said workpieces together.

6. The biscuit of claim 5, wherein said planar member is formed of a substantially anhydrous compressed wood wherein said biscuit expands upon exposure to an adhesive.