US3748814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorative metal grid system for windows
Assignee: Capitol Products Corp
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Filing: 1971-09-16
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Granted: 1973-07-31
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Expires: 1991-09-16
Abstract
Abstract A decorative metal grid system for windows comprising two cross pieces of hollow rectangular tubular metal members interlocked together to form a rectangular or parallelogram patterned grid to be used on either single or insulated glazed windows and a method of joining such members together.
Inventors
- 👤 J Cribben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:04
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/99; E06B3/68; E06B3/685; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/0446; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7001; Y10T403/7003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
An article of manufacture consisting essentially of a crosslap joint of two rectangular tubular members, each of said members having a section removed therefrom to form a standard cross-lap joint, and the sidewalls defined by the section removed therefrom of one of said tubular members being bent outwardly from each other, whereby when said members are joined together to form the cross-lap joint they are locked together.
Claim 2
Dependent Claim
67 words
An article of manufacture consisting essentially of a crosslap joint of two rectangular tubular members, each of said members having a section removed therefrom to form a standard cross-lap joint, and the sidewalls defined by the section removed therefrom of one of said tubular members being bent outwardly from each other, whereby when said members are joined together to form the cross-lap joint they are locked together.
Claim 3
Dependent Claim
27 words
The article of claim 1, wherein said outwardly bent sidewalls are each bent outwardly in such manner as to form a bulge in each of said sidewalls.
Claim 4
Dependent Claim
48 words
The article of claim 1, wherein said outwardly bent sidewalls are each defined by cuts on each side thereof along the edges where the section was removed from said one of said tubular members, and said cuts being made in such manner that said sidewalls form opposing hinges.
Claim 5
Dependent Claim
11 words
The article of claim 1, wherein the tubular members are aluminum.
Claim 6
Dependent Claim
18 words
A decorative metal grid system for windows comprising a plurality of the article of manufacture of claim 1.
Claim 7
Dependent Claim
87 words
A novel cross-lap joint consisting of two rectangular tubular members each having a section removed therefrom so that when the two members are placed one upon the other at right angles to each other, the areas defined by the sections removed therefrom are opposite each other, thereby forming a standard cross-lap joint, and the sidewalls defined by the section removed therefrom of one of the tubular members are bent outwardly away from each other, whereby when said cross-lap joint is formed, said tubular members are locked together.
Claim 8
Dependent Claim
87 words
A novel cross-lap joint consisting of two rectangular tubular members each having a section removed therefrom so that when the two members are placed one upon the other at right angles to each other, the areas defined by the sections removed therefrom are opposite each other, thereby forming a standard cross-lap joint, and the sidewalls defined by the section removed therefrom of one of the tubular members are bent outwardly away from each other, whereby when said cross-lap joint is formed, said tubular members are locked together.
Claim 9
Independent Claim
168 words
A method of joining two rectangular tubular members togEther, comprising the steps of: a. removing a section from each of said members so that when one of said members is placed over the other of said members in a right angle relationship, the areas defined by the sections removed are opposite each other and the two members lie in the same plane; b. bending the side walls defined by the section removed of one of the members outwardly and away from each other; c. placing one tubular member over the other tubular member in a right angle relationship so that the areas defined by the sections removed are opposite each other; d. flexing the tubular member having straight side walls a sufficient amount so that the opening defined by the section removed therefrom is sufficiently large to receive the outwardly bent side walls of the other tubular member; and e. joining the two tubular members together to form a cross-lap joint with the two members being locked together.
Claim 10
Independent Claim
168 words
A method of joining two rectangular tubular members togEther, comprising the steps of: a. removing a section from each of said members so that when one of said members is placed over the other of said members in a right angle relationship, the areas defined by the sections removed are opposite each other and the two members lie in the same plane; b. bending the side walls defined by the section removed of one of the members outwardly and away from each other; c. placing one tubular member over the other tubular member in a right angle relationship so that the areas defined by the sections removed are opposite each other; d. flexing the tubular member having straight side walls a sufficient amount so that the opening defined by the section removed therefrom is sufficiently large to receive the outwardly bent side walls of the other tubular member; and e. joining the two tubular members together to form a cross-lap joint with the two members being locked together.
References Cited (Backward Citations)
US1789280A
Cited
US3623936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |