Patent US2409594A successfully refreshed from Google Patents.
US3848855A
Expired / Lapsed
US
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Tubing connection
Assignee: Individual
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Filing: 1973-06-18
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Granted: 1974-11-19
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Expires: 1993-06-18
Abstract
Abstract Disclosed herein is a tubing connection comprising a longitudinal slot in a second tube member with a pair of inwardly bent flanges along the longitudinal edges of the slot and a first tube member having an end flattened to form two spaced flattened surfaces. The flattened surfaces are separated by recesses cut in the end of the first tube between the flattened surfaces forming two tabs which extend inside the second tube member through the longitudinal slot. The flanges and tabs are spread to conform to the inside contour of the second tube member and a reinforcing member is then pressed inside the spread tabs.
Inventors
- 👤 E Weiland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B21D39/044; E; E04; E04B; E04B1/00; E04B1/38; E04B1/58; E04B1/5825; E04B1/5837; E04B1/5843; F; F16; F16B; F16B17/00; F16B17/004; F16B7/00; E04B2001/5856; F16B2200/00; F16B2200/10; F16B2200/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T403/00; Y10T403/49
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
A tubing assemBly comprising a connection of a first tube member to a second tube member, said second tube member having an elongated longitudinal slot in its side wall, a pair of flanges along the longitudinal edges of said slot, said flanges being deformed away from each other inside said second tube member and conforming to the inside surface of said second tube member, said first tube member having opposed recesses in an end forming two tabs extending from said end, said tabs being flattened and extending through said slot and being spread outwardly within said second tube member to substantially conform with the inside surface of said flanges and said second tube member thereby securely connecting said first tube member to said second tube member.
Claim 2
Dependent Claim
126 words
A tubing assemBly comprising a connection of a first tube member to a second tube member, said second tube member having an elongated longitudinal slot in its side wall, a pair of flanges along the longitudinal edges of said slot, said flanges being deformed away from each other inside said second tube member and conforming to the inside surface of said second tube member, said first tube member having opposed recesses in an end forming two tabs extending from said end, said tabs being flattened and extending through said slot and being spread outwardly within said second tube member to substantially conform with the inside surface of said flanges and said second tube member thereby securely connecting said first tube member to said second tube member.
Claim 3
Dependent Claim
16 words
A tubing assembly of claim 1 having a reinforcing insert tightly fit inside said spread tabs.
Claim 4
Dependent Claim
14 words
A tubing assembly of claim 2 wherein said reinforcing insert is a tubular insert.
Claim 5
Dependent Claim
23 words
A tubing assembly of claim 1 comprising four tubular members connected at their ends by said connection to form a substantially rectangular frame.
Claim 6
Dependent Claim
21 words
A tubing assembly of claim 4 having tubular reinforcing inserts tightly fit inside said spread tabs of each of said connections.
Claim 7
Dependent Claim
18 words
A tubing assembly of claim 5 having fencing within said rectangular frame connected to said four tubular members.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |