US4719727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Access floor panel
Assignee: C-TEC Inc 3433 LOUSMA DRIVE SE GRAND RAPIDS MI 49508 A CORP OF MI
•
Filing: 1985-10-04
•
Granted: 1988-01-19
•
Expires: 2005-10-04
Abstract
Abstract An access floor panel includes a metal pan having a bottom and sidewalls. Lanced tabs extend from the bottom. A plurality of corner inserts include pad portions and core portions extending through the bottom. A concrete mixture encapsulates the tabs and insert core portions. The inserts cooperate with pedestal heads or plates to lock the panel to support pedestals. The panels also include silencer buttons. The buttons and inserts limit metal-to-metal contact. The inserts eliminate the need for stringers.
Inventors
- 👤 Gordon J. Cooper
- 👤 Todd N. Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:49
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0002; B28B7/0014; B28B1/00; B28B1/20; B28B23/00; B28B23/005; E; E04; E04F; E04F15/00; E04F15/02; E04F15/024; E04F15/02405; E04F15/02417; E04F15/02423; E04F15/02429; E04F15/02447; E04F15/02452
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
189 words
An access floor system, comprising: a plurality of floor panels, each panel including a generally rectangular metal pan having a bottom and integral sidewalls, a plurality of corner inserts, each insert including a pad portion contacting an outer surface of said bottom and a core portion extending through said bottom, said core portion defining a bore opening through said pad portion and a concrete mixture within said pan and encapsulating said core portions of said inserts; a plurality of supports, each support including a pedestal and a pedestal plate, said plate being joined to said pedestal and defining a plurality of semispherical portions, each semispherical portion being dimensioned to extend into one of said core portion bores; and a plurality of fasteners, each fastener interconnecting one of said inserts and said plates so that said panels are locked to said supports with said pad portions between said outer surface of said bottom and said supports, and wherein the core portion of each of said inserts defines a reduced diameter portion, said fasteners each engaging one of said reduced diameter portions and one of said semispherical portions of said plates.
Claim 2
Dependent Claim
189 words
An access floor system, comprising: a plurality of floor panels, each panel including a generally rectangular metal pan having a bottom and integral sidewalls, a plurality of corner inserts, each insert including a pad portion contacting an outer surface of said bottom and a core portion extending through said bottom, said core portion defining a bore opening through said pad portion and a concrete mixture within said pan and encapsulating said core portions of said inserts; a plurality of supports, each support including a pedestal and a pedestal plate, said plate being joined to said pedestal and defining a plurality of semispherical portions, each semispherical portion being dimensioned to extend into one of said core portion bores; and a plurality of fasteners, each fastener interconnecting one of said inserts and said plates so that said panels are locked to said supports with said pad portions between said outer surface of said bottom and said supports, and wherein the core portion of each of said inserts defines a reduced diameter portion, said fasteners each engaging one of said reduced diameter portions and one of said semispherical portions of said plates.
Claim 3
Dependent Claim
18 words
An access floor system as defined by claim 1 wherein said pedestal plates each define four semispherical portions.
Claim 4
Dependent Claim
20 words
An access floor system as defined by claim 1 wherein said inserts are fabricated from a statically conductive plastic material.
Claim 5
Dependent Claim
17 words
An access floor system as defined by claim 3 wherein said statically conductive plastic material is polypropylene.
Claim 6
Dependent Claim
18 words
An access floor system as defined by claim 4 wherein said pedestal plates each define four semispherical portions.
Claim 7
Dependent Claim
20 words
An access floor system as defined by claim 1 further including silencer buttons extending from the sidewalls of said panels.
Claim 8
Dependent Claim
20 words
An access floor system as defined by claim 5 further including silencer buttons extending from the sidewalls of said panels.
Claim 9
Dependent Claim
39 words
An access floor system as defined by claim 1 wherein said fasteners each include a head, a nonthreaded portion and a threaded portion, said nonthreaded portion being within said reduced diameter portion of one of said insert core portions.
Claim 10
Dependent Claim
39 words
An access floor system as defined by claim 7 wherein said fasteners each include a head, a nonthreaded portion and a threaded portion, said nonthreaded portion being within said reduced diameter portion of one of said insert core portions.
References Cited (Backward Citations)
NL70265C
Cited
US1845711A
Cited
FR818195A
Cited
US2154036A
Cited
US2585557A
Cited
US2956653A
Cited
CH452163A
Cited
GB1173665A
Cited
US3759009A
Cited
US4296586A
Cited
DE2900759A1
Cited
FR2532350A1
Cited
US4606156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |