Patent US4054392A successfully refreshed from Google Patents.
US4054392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable mechanical joints
Assignee: Individual
•
Filing: 1976-12-27
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Granted: 1977-10-18
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Expires: 1996-12-27
Abstract
Abstract A system of structural members comprising a basic structural member having secured to opposite sides thereof a pair of corresponding plates which extend outwardly from the sides of the basic structural member, and are adapted to enable two secondary structural members to be secured thereto by means of releasable fasteners, and at least one further structural member having an end provided with two opposite recesses shaped to allow said end to fit between the plates with heads of any fasteners abutting the plates on the insides thereof located in the recesses, this end further having a flange for securing it to the basic structural member.
Inventors
- 👤 Frank C. Oppenheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:12
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/18; F16B2200/00; F16B2200/40; F16B2200/403; F16B2200/50; F16B2200/506; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/345; Y10T403/346
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A system of structural members comprising a basic structural member having secured to opposite sides thereof a pair of corresponding plates which extend outwardly from the sides of the basic structural member, and are adapted to enable two secondary structural members to be secured thereto by means of releasable fasteners, and at least one further structural member having an end provided with two opposite recesses shaped to allow said end to fit between the plates with heads of any fasteners abutting the plates on the insides thereof located in the recesses, this end further having a flange for securing it to the basic structural member.
Claim 2
Independent Claim
105 words
A system of structural members comprising a basic structural member having secured to opposite sides thereof a pair of corresponding plates which extend outwardly from the sides of the basic structural member, and are adapted to enable two secondary structural members to be secured thereto by means of releasable fasteners, and at least one further structural member having an end provided with two opposite recesses shaped to allow said end to fit between the plates with heads of any fasteners abutting the plates on the insides thereof located in the recesses, this end further having a flange for securing it to the basic structural member.
Claim 3
Dependent Claim
29 words
A system as claimed in claim 1 in which the said two structural members have transverse flanges adapted to be bolted to the outwardly extending portions of the plates.
Claim 4
Dependent Claim
17 words
A system as claimed in claim 1 in which the structural members to be of square cross-section.
Claim 5
Dependent Claim
14 words
A system as claimed in claim 1 in which the structural members are tubular.
Claim 6
Dependent Claim
27 words
A system as claimed in claim 1 in which the structural members are adapted to be secured in a right angular relationship with respect to each other.
References Cited (Backward Citations)
US1548046A
Cited
US2374550A
Cited
US3593477A
Cited
GB1409718A
Cited
US3977801A
Cited
US3938297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |