US4317318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting grid system having interchangeable T sections
Assignee: Donn Inc
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Filing: 1979-09-04
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Granted: 1982-03-02
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Expires: 1999-09-04
Abstract
Abstract A one piece T section used interchangeably as both a main T member and a cross T member in a supporting grid system for suspended ceilings. The interchangeable T sections have locking connectors engageable to interlock a pair of sections in end to end relation to form a main T splice with their tile supporting flanges substantially abutting. When the sections are used as cross T members, the locking connectors engage the web of a section used as a main T member and the flanges of the cross T sections overlie the flanges of the main T section with which they are interlocked.
Inventors
- 👤 Gale E. Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:52
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/10; E04B9/12; E04B9/122
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
226 words
A supporting grid system for suspended ceilings and the like, said system being of the type having main tee members extending in spaced-apart parallel relation and cross tee members extending at right angles to said main tee members to define a standard 1X by 2X module, said members having web portions upstanding from laterally projecting tile supporting flange portions, said system being characterized by: (a) said main and cross tee members comprising interchangeable tee sections, whereby said sections form both said main tee members and said cross tee members and are usable as either; (b) said interchangeable tee sections having locking connectors projecting from the web portion thereof beyond the flange portions thereof, said sections also having locking connector receiving slots through the web portion thereof at spaced locations therealong, said locking connectors being engageable with each other to join a pair of said sections in end to end relation, said locking connectors extending through one of said slots of a section used as a main tee member to join a pair of sections used as cross tee members in right angular relation to such main tee sections; and (c) the flange portions of said sections substantially abutting when said sections are joined in end to end relation, and the flange portions of said cross tee sections overlying the flange portions of said main tee section.
Claim 2
Dependent Claim
226 words
A supporting grid system for suspended ceilings and the like, said system being of the type having main tee members extending in spaced-apart parallel relation and cross tee members extending at right angles to said main tee members to define a standard 1X by 2X module, said members having web portions upstanding from laterally projecting tile supporting flange portions, said system being characterized by: (a) said main and cross tee members comprising interchangeable tee sections, whereby said sections form both said main tee members and said cross tee members and are usable as either; (b) said interchangeable tee sections having locking connectors projecting from the web portion thereof beyond the flange portions thereof, said sections also having locking connector receiving slots through the web portion thereof at spaced locations therealong, said locking connectors being engageable with each other to join a pair of said sections in end to end relation, said locking connectors extending through one of said slots of a section used as a main tee member to join a pair of sections used as cross tee members in right angular relation to such main tee sections; and (c) the flange portions of said sections substantially abutting when said sections are joined in end to end relation, and the flange portions of said cross tee sections overlying the flange portions of said main tee section.
Claim 3
Dependent Claim
64 words
A supporting grid system as set forth in claim 1, wherein said locking connectors have means engageable with said web portion for interlocking engagement for each section used as a cross tee member with the section used as a main tee member, and means interlocking said connectors together to provide a splice when a pair of sections are joined in end to end relation.
Claim 4
Dependent Claim
49 words
A supporting grid system as set forth in claim 2, wherein said web engaging means comprises a resiliently yieldable finger for slip fit passage through a slot and snap fit engagement of a section used as a cross tee member with a section used as a main tee member.
Claim 5
Dependent Claim
42 words
A supporting grid system as set forth in claim 2, wherein said last named means comprise a recessed shoulder and a laterally projecting detent spaced therefrom for interlocking engagement with the corresponding and oppositely facing detent and shoulder of the other connector.
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) | 1985-03-01 | 1985-08-31 | 1986-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-01 | 1989-08-31 | 1990-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-01 | 1993-08-31 | 1994-03-02 | $7700.00 | Window Closed / Lapsed |