US4420922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural section for containing a vacuum
Assignee: Individual
•
Filing: 1980-12-18
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Granted: 1983-12-20
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Expires: 2000-12-18
Abstract
Abstract Structural sections comprising two spaced apart parts defining an intervening evacuatable void, the parts affording a high degree of thermal and acoustical insulation due in part to the vacuum but also to the minimal contact between the two parts. The parts are held apart against atmospheric pressure through the use of line or point contact formed in a particular manner to minimize thermal and acoustical conduction at the contacting surfaces.
Inventors
- 👤 Pryce Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:43
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/88; E04B1/90; E04B1/76; E04B1/78; E04B1/80; E04B1/803; E04C; E04C2/00; E04C2/30; E04C2/34; E04B1/82; E04B1/84; E04B2001/8423; E04B2001/8442; E04B2001/8447; Y; Y02; Y02A; Y02A30/00; Y02A30/24; Y02A30/242; Y02B; Y02B80/00; Y02B80/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said members of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, said spacer members comprising elongated triangular configurations with each member having its base secured to the interior of a different one of said parts, each of said spacer members engaging the other laterally thereof at its apex, one of said engaging spacer members being notched for positioning the engaging members relative to each other, and the angle defined by the notch being greater than the angle defined by the converging sides forming the apex of engaging spacer members.
Claim 2
Dependent Claim
171 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said members of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, said spacer members comprising elongated triangular configurations with each member having its base secured to the interior of a different one of said parts, each of said spacer members engaging the other laterally thereof at its apex, one of said engaging spacer members being notched for positioning the engaging members relative to each other, and the angle defined by the notch being greater than the angle defined by the converging sides forming the apex of engaging spacer members.
Claim 3
Dependent Claim
25 words
The structural section set forth in claim 1 wherein: a plurality of pairs of spacer members are provided in a spaced arrangement in said space.
Claim 4
Dependent Claim
24 words
The structural section set forth in claim 2 wherein: like members of each pair of spacer members are set forth in a parallel arrangement.
Claim 5
Dependent Claim
15 words
The structural section set forth in claim 1 wherein: said parts define exposed planar surfaces.
Claim 6
Dependent Claim
31 words
The structural section set forth in claim 1 wherein: said spacer elements engage each other at least at a point in the valley of the notch of the other spacer element.
Claim 7
Dependent Claim
145 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said members of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, one of said engaging spacer members being notched for positioning the engaging members relative to each other, and at least one of said parts defining an exposed surface formed by a plurality of similar convex surfaces arranged in a planar array with their edges intersecting along similar pairs of mutually perpendicular planes.
Claim 8
Dependent Claim
145 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said members of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, one of said engaging spacer members being notched for positioning the engaging members relative to each other, and at least one of said parts defining an exposed surface formed by a plurality of similar convex surfaces arranged in a planar array with their edges intersecting along similar pairs of mutually perpendicular planes.
Claim 9
Dependent Claim
149 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, one of said engaging members being notched for positioning the engaging members relative to each other, each of said parts defining an exposed surface formed by a plurality of similar convex surfaces arranged in a planar array with their edges intersecting along similar pairs of mutually perpendicular planes, and said spacer members comprising the edges of said convex surfaces.
Claim 10
Dependent Claim
149 words
A structural section comprising: a pair of engaging parts, each having a confronting edge which together form walls for encompassing and sealing a space therebetween containing less than surrounding atmospheric pressure, means for positioning said parts, one relative to the other, comprising at least a pair of spacer members, each one of said pair of spacer members extending into the interior of said space from a different one of said parts for engaging the other one of said spacer elements laterally thereof at least at point contacts along a line, one of said engaging members being notched for positioning the engaging members relative to each other, each of said parts defining an exposed surface formed by a plurality of similar convex surfaces arranged in a planar array with their edges intersecting along similar pairs of mutually perpendicular planes, and said spacer members comprising the edges of said convex surfaces.
References Cited (Backward Citations)
US1337611A
Cited
US698453A
Cited
US958095A
Cited
US1328918A
Cited
US1229912A
Cited
US1433894A
Cited
US1890655A
Cited
US1954581A
Cited
US1984007A
Cited
US1948477A
Cited
US2189388A
Cited
US2559198A
Cited
US2638187A
Cited
US2700632A
Cited
US2718014A
Cited
US2849758A
Cited
US3108367A
Cited
US3227620A
Cited
US3226905A
Cited
US3242629A
Cited
GB1138992A
Cited
US3803784A
Cited
US3858372A
Cited
CA1011072A
Cited
DE2802411A1
Cited
DE2827818A1
Cited
US4253445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |