Patent US3748799A successfully refreshed from Google Patents.
US3748799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbent panel
Assignee: RULE A E Ltd
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Filing: 1971-05-13
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Granted: 1973-07-31
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Expires: 1991-05-13
Abstract
Abstract A partition unit is disclosed which includes a rigid panel and an enclosing, channel-shaped, one-piece edge member. The two ends of the edge member abut one another mid-way of a rectilinear edge of the panel, and double-faced adhesive tape is applied along that edge, spanning the end abutment and affixing the partition unit to a flat surface.
Inventors
- 👤 W Tough
- 👤 R Hintsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/38; E04C2/384; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/825
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
A partition unit comprising: a substantially rigid panel having at least one rectilinear edge, a unitary, semi-rigid edge member enclosing the edges of the panel, the edge member in cross-section comprising a base portion dimensioned to span The distance between the panel surfaces, and two spaced-apart flange portions projecting from the base portion, the flange portions being notched at locations corresponding to corners between panel edges to permit the base portion to bend around the corners, the ends of the edge member abutting each other at a location intermediate said at least one rectilinear edge, and at least one strip of double-faced adhesive tape applied against the exterior of the base portion of the edge member along said at least one rectilinear edge, said at least one strip being so disposed that it provides adhesive areas at both end portions of said at least one rectilinear edge, and at the location of abutment between the edge member ends.
Claim 2
Dependent Claim
158 words
A partition unit comprising: a substantially rigid panel having at least one rectilinear edge, a unitary, semi-rigid edge member enclosing the edges of the panel, the edge member in cross-section comprising a base portion dimensioned to span The distance between the panel surfaces, and two spaced-apart flange portions projecting from the base portion, the flange portions being notched at locations corresponding to corners between panel edges to permit the base portion to bend around the corners, the ends of the edge member abutting each other at a location intermediate said at least one rectilinear edge, and at least one strip of double-faced adhesive tape applied against the exterior of the base portion of the edge member along said at least one rectilinear edge, said at least one strip being so disposed that it provides adhesive areas at both end portions of said at least one rectilinear edge, and at the location of abutment between the edge member ends.
Claim 3
Dependent Claim
14 words
The invention claimed in claim 1, in which the panel is of sound-absorbent material.
Claim 4
Dependent Claim
19 words
The invention claimed in claim 2, in which the panel has bonded to each surface a loose-woven fabric material.
Claim 5
Dependent Claim
12 words
The invention claimed in claim 1, in which the panel is rectangular.
Claim 6
Dependent Claim
28 words
The invention claimed in claim 1, in which the panel is polygonal in shape, and has a uniform thickness between its surfaces adjacent the edges of the panel.
Claim 7
Dependent Claim
85 words
The invention claimed in claim 5, in which the edge member has a uniform cross-section along its length, the base portion being slightly arcuate, the flange portions projecting convergently from the extremities of the base portion, each flange portion defining an acute angle with the part of the base portion immediately adjacent that flange portion, the edge member being dimensioned such that the flange portions must be pried apart to encompass the panel edge, whereby the arcuate base portion is at least partly flattened out.
Claim 8
Dependent Claim
16 words
The invention claimed in claim 1 in which the notches in the flange portions are V-grooves.
Claim 9
Dependent Claim
23 words
The invention claimed in claim 6, in which the panel is rectangular, and in which the notches in the flange portions are V-grooves.
References Cited (Backward Citations)
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 |