US3890022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner fitting
Assignee: Individual
•
Filing: 1974-09-03
•
Granted: 1975-06-17
•
Expires: 1994-09-03
Abstract
Abstract A corner fitting is provided in which from two to six tubes may be secured together in right angular relation. A square block forms the corner. By drilling a hole in the center of any surface of the block, an expandable rectangular fitting may be secured against this surface. By turning the tube ninety degrees in either direction, the expandable fitting will expand and securely lock the end of the tube to the block.
Inventors
- 👤 Howard R Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/44; F16B12/50; A; A47; A47B; A47B47/00; A47B47/0008; A47B47/0016; A47B2220/00; A47B2220/11; A47B2230/00; A47B2230/04; F16B2012/446; H; H02; H02B; H02B1/00; H02B1/01; H02B1/013; H02B1/014; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
The structure of claim 1 and in which said indentations are at right angles to said notch.
Claim 2
Dependent Claim
16 words
The structure of claim 1 and in which said cross-pin comprises a split tubular expansion pin.
Claim 3
Dependent Claim
30 words
The structure of claim 1 and in which expandable member comprises a body generally rectangular in cross-section but including expansion grooves in the walls thereof which engage said tubular member.
Claim 4
Dependent Claim
38 words
The structure of claim 1 and including a multi-sided recess in one end of said expandable member and a similarly shaped projection on the cam plate engaging the recess in said expandable member to prevent relative rotation therebetween.
Claim 5
Dependent Claim
19 words
The structure of claim 1 and in which said first pin is longitudinally knurled for engagement in said block.
Claim 6
Dependent Claim
18 words
The structure in claim 1 and including a bearing plate between said resilient member and said square block.
Claim 7
Dependent Claim
27 words
The structure of claim 7 and in which said bearing plate includes a peripheral flange extending between the end of said tubular member and said square block.
Claim 8
Dependent Claim
22 words
The structure of claim 7 and including means on said bearing plate cooperable with said expandable member to prevent relative rotation thereof.
Claim 9
Dependent Claim
17 words
The structure of claim 1 and including a plurality of tubular members connected to said square block.
References Cited (Backward Citations)
US2886359A
Cited
US2956705A
Cited
US3044656A
Cited
US3182846A
Cited
US3532369A
Cited
US3721484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |