Work Files Saved Searches
   My Account                                                  Search:   Quick/Number   Boolean   Advanced       Help   

 The Delphion Integrated View

  Buy Now:   Buy PDF- 9pp  PDF  |   File History  |   Other choices   
  Tools:  Citation Link  |  Add to Work File:    
  View:  Expand Details   |  INPADOC   |  Jump to: 
 Email this to a friend  Email this to a friend 
Title: US5230200: Wallboard and method of joining wallboards
[ Derwent Title ]

Country: US United States of America

View Images High


9 pages

Inventor: Douglas, Waymon J.; Lexington, KY 40503
Douglas, Wilburn C.; Nicholasville, KY 40356

Assignee: None

Published / Filed: 1993-07-27 / 1990-02-12

Application Number: US1990000478933

IPC Code: Advanced: E04B 2/74; E04F 21/00; E04B 2/72;
IPC-7: E04B 1/00;

ECLA Code: E04B2/74C5C; E04F21/00; P04B2/72C;

U.S. Class: Current: 052/746.1; 052/309.9; 052/417; 156/071; 156/275.3;
Original: 052/746; 052/307.9; 052/417; 156/071; 156/275.3;

Field of Search: 052/416,417,419,420,744,309,746 428/703,49,50 156/071,275.3

Priority Number:
1990-02-12  US1990000478933
1988-10-31  US1988000264853

Abstract:     A wallboard is formed with each of its abutting top and bottom surfaces extending from its rear surface substantially perpendicular thereto for less than 50%, preferably 371/2%, of the distance between the rear surface and the front surface. The wallboard has a convex curved surface extending from the termination of the abutting top or bottom surface to the front surface. When the abutting surfaces of two wallboards are disposed in abutting relation, a deep fill recess is formed between the curved surfaces of the two adjacent wallboards. The recess is filled with a sealing compound having a greater compression strength than the compression strength of each of the adjacent wallboards so that any compression of the wallboards is absorbed by the wallboards and not the sealing compound whereby no tape is required at the wallboard joint and no ridging occurs.

Attorney, Agent or Firm: Leach, Jr., Frank C. ;

Primary / Asst. Examiners: Friedman, Carl D.; Mai, Lan M.

Maintenance Status: E3 Expired  Check current status
CC Certificate of Correction issued

INPADOC Legal Status: Show legal status actions

Related Applications:
Application Number Filed Patent Pub. Date  Title
US1988000264853 1988-10-31       

Parent Case:     This is a continuation-in-part of U.S. application Ser. No. 07/264,853, filed Oct. 31, 1988, now abandoned.

Family: None

First Claim:
Show all 22 claims
We claim:     1. A method of forming a wallboard joint finished without tape between two wallboards including:
  • forming each of the two wallboards with substantially parallel front and rear surfaces;
  • forming each of two substantially parallel surfaces of each of the two wallboards substantially perpendicular to the rear surface of the wallboard with each of the two substantially parallel surfaces extending from the rear surface less than one-half of the distance from the rear surface of each of the two wallboards to its front surface;
  • forming a connecting surface from an end of each of the two substantially parallel surfaces, remote from the rear surface, of each of the two wallboards to the front surface with the connecting surface being curved at least adjacent the front surface of each of the two wallboards;
  • disposing one of the two substantially parallel surfaces of each of the two wallboards in abutting relation with each other to constitute two abutting surfaces so that the two wallboards are adjacent wallboards having a deep fill recess formed between the connecting surfaces of the adjacent wallboards;
  • and depositing a sealing compound with a greater compression strength than the compression strength of each of the adjacent wallboards in the deep fill recess formed between the connecting surfaces of the adjacent wallboards so that the sealing compound fills the deep fill recess.

Background / Summary: Show background / summary

Drawing Descriptions: Show drawing descriptions

Description: Show description

Forward References: Show 15 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (15)   |   Backward references (8)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 3pp US1526108* 1925-02 Adams    
Get PDF - 7pp US3180058  1965-04 Tillisch et al.   Joint structure for plasterboard
Get PDF - 3pp US3385019  1968-05 Frank   Wallboard and wall structure
Get PDF - 6pp US3435582  1969-04 Disney et al.   WALLBOARD CONSTRUCTION
Get PDF - 9pp US3576091  1971-04 Shull, Jr. et al.  National Gypsum Company DRYWALL JOINT SYSTEMS AND METHOD FOR MAKING THE SAME
Get PDF - 9pp US3708935  1973-01 Kossuth et al.  National Gypsum Company SIMULATED MONOLITHIC PREDECORATED WALL CONSTRUCTION
Get PDF - 14pp US4238542  1980-12 Burley  Tile Council of America, Inc. Method of using adhesive joint dressing compositions and product
Get PDF - 5pp US4735027  1988-04 Evans et al.  Owens-Corning Fiberglas Corporation Coating for wallboards
  * some details unavailable
Foreign References:
Publication Date IPC Code Assignee   Title

Inquire Regarding Licensing

Powered by Verity

Plaques from Patent Awards      Gallery of Obscure PatentsNominate this for the Gallery...

Thomson Reuters Copyright © 1997-2014 Thomson Reuters 
Subscriptions  |  Web Seminars  |  Privacy  |  Terms & Conditions  |  Site Map  |  Contact Us  |  Help