US3571997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wing for at least partly closing a wall opening
Assignee: Individual
•
Filing: 1969-03-12
•
Granted: 1971-03-23
•
Expires: 1989-03-12
Abstract
Abstract A metal frame is composed of frame members consisting of extruded sections and connected by plug connections. The frame members have inner side portions which define a frame opening. Each of said side portions carries at least two edge lips projecting into said frame opening. The wing also comprises paneling which covers said frame opening and is held in position between and by said edge lips.
Inventors
- 👤 Ludwig Lindpointner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:06
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/12; E06B3/14; E06B3/16; E06B3/70; E06B3/72; E06B3/725; E06B3/726; E06B3/96; E06B3/964; E06B3/968; E06B3/976; E06B3/9765
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
55 words
A wing as set forth in claim 1, wherein the stiffening means consist of extruded sections having opposite side portions, each of said side portions having two edge lips projecting into said frame opening, and the ends of the two edge lips being in alignment with and received by corresponding ones of the skewed slots.
Claim 2
Dependent Claim
56 words
A wing as set forth in claim 2, wherein the extruded sections constituting the frame members and at least some of the extruded sections constituting the stiffening means are tubes of rectangular cross section, and the edge lips projecting from the side portions thereof extend from points inwardly spaced from the corners of the rectangular tubes.
Claim 3
Dependent Claim
77 words
A wing as set forth in claim 1, in which: said extruded sections are hollow; said frame members form corner joints and define a main plane; a corner piece is inserted in each corner joint; said corner pieces are formed with openings extending normal to said main plane; and said frame members are formed with depressions engaging said openings of adjacent corner pieces. said frame members are formed with depressions engaging said openings of adjacent corner pieces.
Claim 4
Dependent Claim
36 words
A wing as set forth in claim 1, in which: said paneling comprises two sheet elements which bear on said edge lips and define a space, filled with foamed plastics material bonded to said sheet elements.
Claim 5
Dependent Claim
125 words
A wing for at least partly closing a wall opening, said wing comprising: a metal frame composed of frame member consisting of extruded sections and connected by plug connection; said frame members having inner side portions which define a frame opening: each of said side portions carrying at least two edge lips projecting into said frame opening; and paneling which covers said frame opening and held in position between and by said edge lips, the paneling being formed with a peripheral groove receiving one of said edge lips carried by said frame members and having an inside surface defining a space with the other of said edge lips carried by each of said frame members, and with said space being filled by a sealing material.
Claim 6
Dependent Claim
17 words
A wing as set forth in claim 6, in which saiD sealing material consist of foamed material.
Claim 7
Dependent Claim
31 words
A wing as set forth in claim 6, which comprises a sheet metal covering on said inside surface of said paneling; said covering being held in position by said sealing material.
Claim 8
Dependent Claim
48 words
A wing as set forth in claim 6, which comprises: a sheet metal covering on said inside surface of said paneling; and at least one sectional member disposed between said two edge lips carried by each of said frame members; said sectional members holding said covering in position
Claim 9
Dependent Claim
19 words
A wing as set forth in claim 6, in which said paneling consists of a plurality of panel elements.
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |