Claims
- 1. A joint construction including:
- a plurality of work pieces defining holes therethrough generally axially aligned; and,
- a tubular member within said holes, said tubular member including a seamless cylindrical side wall defining a common central passage therethrough having a substantially constant diameter along its length, said side wall further comprising a major section and a minor section positioned end-to-end with said major section, said major section having a substantially constant major outside diameter along the length of said major section and said minor section having a substantially constant minor outside diameter along the length of said minor section, said minor diameter being a final prescribed amount smaller than said major diameter, said tubular member having less rebound upon enlargement than the material of said work pieces, and said side wall having been enlarged a substantially constant enlarged amount along its length to cause said major and minor sections to be enlarged into contact with said work pieces within said holes and enlarge said holes from an initial substantially constant hole diameter along the length of said holes to said major outside diameter and said minor outside diameter where said major section has been enlarged said prescribed enlarged amount from a first initial outside diameter smaller than said initial hole diameter to said major outside diameter and where said minor section has been enlarged said prescribed enlarged amount from a second initial outside diameter smaller than said first initial outside diameter of said major section by said final prescribed amount to said minor outside diameter larger than said initial hole diameter so that the portion of said holes aligned with said major section is enlarged more than the portion of the holes aligned with said minor section by said final prescribed amount.
- 2. The joint construction of claim 1 wherein one of said work pieces has a first prescribed thickness, said major section having a length substantially equal to said first prescribed thickness and positioned so that said major section is axially aligned with said one of said work pieces.
- 3. The joint construction of claim 1 wherein said tubular member includes a head flange at one end thereof in juxtaposition with one side of said work pieces.
- 4. The joint construction of claim 3 wherein said tubular member has a length greater than the total thickness of said work pieces so that its end opposite said head flange protrudes from said work pieces, said protruding end having an enlarged diameter greater than the enlarged diameter of said tubular member within said holes to retain said tubular member with said work pieces.
- 5. The joint construction of claim 3 further including an anti-corrosive coating on the outside surface of said tubular member.
- 6. The joint construction of claim 1 wherein said work pieces about said holes have been enlarged beyond their elastic limit.
- 7. The joint construction of claim 1 wherein said seamless cylindrical side wall includes a first seamless side wall section extending the length of said tubular member, defining said common central passage therethrough, and having said minor outside diameter along the length thereof; and a second seamless side wall section having said major outside diameter and defining a second central passage therethrough substantially equal in diameter to said minor outside diameter, said second side wall section in bearing support on said first side wall section to define said major section.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of my co-pending application Ser. No. 324,485, now U.S. Pat. No. 3,835,688, filed Jan. 17, 1973, for "Apparatus and Method for Sizing Holes," which is a continuation-in-part of my co-pending application Ser. No. 268,478, filed July 3, 1972, now U.S. Pat. No. 3,835,615, which is in turn a continuation-in-part of my earlier filed application Ser. No. 33,281, filed Apr. 30, 1970, now abandoned, which was in turn a continuation-in-part of my earlier filed application Ser. No. 711,368, filed Mar. 7, 1968, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
745,843 |
Feb 1933 |
FR |
Continuation in Parts (4)
|
Number |
Date |
Country |
Parent |
324485 |
Jan 1973 |
|
Parent |
268478 |
Jul 1972 |
|
Parent |
33281 |
Apr 1970 |
|
Parent |
711368 |
Mar 1968 |
|