US3927698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation channel
Assignee: Intermercury Finance and Trading Co Ltd
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Filing: 1974-06-06
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Granted: 1975-12-23
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Expires: 1994-06-06
Abstract
Abstract A service installation channel for accomodating gas, water, electricity and similar piped or cabled service conduits for commercial and residential housing. The service installation channel is formed from a plurality of standardized, strip-like components connected in a successive manner at their longitudinal edges with complimentary tongue-and-groove joints that provide positive interlocking connection. There are at least two uppermost strip-like components forming each sidewall with the two upper most strip-like components of each sidewall having a first tongue-and-groove joint similar to those between other adjacent pairs of interconnected strip-like components comprising the service installation channel and an additional interconnected tongue-and-groove joint extending laterally inwardly adjacent the said first tongue-and-groove joint.
Inventors
- 👤 Rolf Johannsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:23
CPC Classifications
E; E04; E04F; E04F17/00; E04F17/08; H; H02; H02G; H02G3/00; H02G3/02; H02G3/04; H02G3/0437
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A service installation channel comprising a plurality of elongated strip-like components interconnected in successive manner along their longitudinally extending peripheral edges with complementary tongue-and-groove joints that provide positive interlocking connection, there being at least two uppermost strip-like components forming each sidewall and with the two uppermost strip-like components of each side wall having a first tongue-and-groove joint similar to those between other adjacent pairs of interconnected strip-like components comprising the service installation channel and an additional interconnected tongue-and-groove joint extending laterally inwardly adjacent said first tongue-and-groove joint.
Claim 2
Dependent Claim
87 words
A service installation channel comprising a plurality of elongated strip-like components interconnected in successive manner along their longitudinally extending peripheral edges with complementary tongue-and-groove joints that provide positive interlocking connection, there being at least two uppermost strip-like components forming each sidewall and with the two uppermost strip-like components of each side wall having a first tongue-and-groove joint similar to those between other adjacent pairs of interconnected strip-like components comprising the service installation channel and an additional interconnected tongue-and-groove joint extending laterally inwardly adjacent said first tongue-and-groove joint.
Claim 3
Dependent Claim
44 words
A channel according to claim 1 wherein each groove formed in a longitudinally extending peripheral edge is undercut towards its bottom and the complementary tongue formed on the adjacent strip-like component has a lateral flange at its outermost edge for receipt in said undercut.
Claim 4
Dependent Claim
20 words
A channel according to claim 2 wherein said flange is outwardly convergently tapered to facilitate release of the relevant joint.
Claim 5
Dependent Claim
23 words
A channel according to claim 3 wherein each of said strip-like components comprise resilient material to render said joints snap fitting in nature.
Claim 6
Dependent Claim
34 words
A channel according to claim 4 wherein at least one of said components has an inward projection to receive and support an equipment part, a partition wall, an intermediate floor, or other additional member.
Claim 7
Dependent Claim
34 words
A channel according to claim 5 wherein each intermediate strip-like component, excluding those uppermost in the channel side walls, have substantially identical complementary tongue or groove connections formed on the longitudinally extending edges thereof.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |