Patent US3701553A successfully refreshed from Google Patents.
US3701553A
Expired / Lapsed
US
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Frame structure
Assignee: AG fur VOGT-PATENTVERWERTUNGEN
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Filing: 1970-11-30
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Granted: 1972-10-31
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Expires: 1990-11-30
Abstract
Abstract A frame structure comprising hollow members of polygonal crosssection, hollow members forming different frame portions being interconnected by means of spreadable coupling units comprising loosely assembled parts held in predetermined positions within said hollow members and adapted to be braced in at least two directions in pairs against the inside surfaces of said hollow members.
Inventors
- 👤 Wilheim Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:55
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/40; E; E04; E04G; E04G7/00; E04G7/02; E06; E06B; E06B3/00; E06B3/96; E06B3/964; E06B3/968; E06B3/972; E06B3/9725; F16B7/00; F16B7/04; F16B7/044; F16B7/0446; F16B12/44; F16B12/50; F16B2012/505; F16B2200/00; F16B2200/40; Y; Y10; Y10T; Y10T403/00; Y10T403/44; Y10T403/46; Y10T403/4602; Y10T403/76
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A frame structure comprising hollow members of polygonal cross-section, including at least one coupling unit expanded into an end of a frame member, said coupling unit comprising a plurality of flats loosely interconnected together, means for bracing said flats in at least two directions in pairs against the inside surfaces of said frame member, and elements positioning all said flats in said hollow frame member, said elements resting in the corners of the inside of said hollow frame member.
Claim 2
Dependent Claim
79 words
A frame structure comprising hollow members of polygonal cross-section, including at least one coupling unit expanded into an end of a frame member, said coupling unit comprising a plurality of flats loosely interconnected together, means for bracing said flats in at least two directions in pairs against the inside surfaces of said frame member, and elements positioning all said flats in said hollow frame member, said elements resting in the corners of the inside of said hollow frame member.
Claim 3
Dependent Claim
21 words
A structure as recited in claim 1, comprising means for connecting said elements to said flats to form an integral whole.
Claim 4
Dependent Claim
33 words
A structure as recited in claim 1, wherein said flats have a rectangular cross-section and said elements each have a circular cross-section said elements being loosely arranged between adjacent edges of two flats.
Claim 5
Dependent Claim
31 words
A structure as recited in claim 1 wherein said flats are provided at the ends of the unit with flanges defining holes, said elements having the bent-over ends entering said holes.
Claim 6
Dependent Claim
27 words
A structure as recited in claim 3 comprising cylindrical spreaders located in corners formed between adjacent flats, and central bracing members braced apart to support said spreaders.
Claim 7
Dependent Claim
21 words
A structure as recited in claim 5, wherein said central bracing members are mounted in holders located on oppositely situated flats.
Claim 8
Dependent Claim
32 words
A structure as recited in claim 1 comprising a U shaped yoke connecting opposite flats of a pair, with means for fixing said yoke to the outside surface of a frame member.
Claim 9
Dependent Claim
41 words
A structure as recited in claim 1, wherein said coupling unit comprises a flat part, two cylindrical spreaders, a central bracing member and two positioning elements, all held together by means of adhesive tape and inserted between two of said flats.
Claim 10
Dependent Claim
39 words
A structure according to claim 1, comprising a slotted spreadable rib between two opposite flats, a conical spreading shoulder defined by said flats, and at least one spreader screw passing through said shoulder and directly spreading two other flats.
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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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |