US4932179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abandonment plug for concrete floors
Assignee: ABB Installation Products International LLC
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Filing: 1989-05-12
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Granted: 1990-06-12
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Expires: 2009-05-12
Abstract
Abstract An abandonment plug assembly for limiting heat and fire passage through an opening formed through a floor, comprises a cover for disposition atop the floor and configured to extend beyond the opening and engage the floor, first and second cup members dependant from the cover and mutually displaceable toward one another to force a substance disposed therebetween into contiguity with the sidewall bounding the opening, an actuator for effecting the displacement of the first and second cup members and intumescent discs depending from the second cup member.
Inventors
- 👤 Charles W. Sosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:55
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6803; E04B1/6804
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
An abandonment plug assembly for limiting heat and fire passage through an opening formed through a floor, comprising: a cover for disposition atop the floor and configured to extend beyond said opening and engage the floor; first and second cup members dependent from the cover and mutually displaceable toward one another; intumescent putty supported between said cup members, said putty being compressible into sealing engagement with a perimeter of a sidewall bounding said opening; actuator means for effecting said displacement of said first and second cup members; and intumescent disc means depending from said second cup member; said intumescent putty being expandable upon exposure to heat to expand against said sidewall perimeter to restrict the passage of heat therethrough.
Claim 2
Dependent Claim
119 words
An abandonment plug assembly for limiting heat and fire passage through an opening formed through a floor, comprising: a cover for disposition atop the floor and configured to extend beyond said opening and engage the floor; first and second cup members dependent from the cover and mutually displaceable toward one another; intumescent putty supported between said cup members, said putty being compressible into sealing engagement with a perimeter of a sidewall bounding said opening; actuator means for effecting said displacement of said first and second cup members; and intumescent disc means depending from said second cup member; said intumescent putty being expandable upon exposure to heat to expand against said sidewall perimeter to restrict the passage of heat therethrough.
Claim 3
Dependent Claim
22 words
The invention claimed in claim 1 further including a film extending between said first and second cup members and containing said putty.
Claim 4
Dependent Claim
42 words
The invention claimed in claim 1 wherein said actuator means comprises an installation screw abutting said first cup member and extending therethrough and an interiorly threaded stud abutting said second cup member and extending therethough and in engagement with said installation screw.
Claim 5
Dependent Claim
34 words
The invention claimed in claim 3 further including a film extending between said first and second cup members and containing said putty, said screw and said stud being disposed in part within said putty.
Claim 6
Dependent Claim
39 words
The invention claimed in claim 3 wherein operation of said actuator means in displacing said cup members toward one another is limited by said stud engaging said first cup member, thereby precluding further mutual displacement of said cup members.
Claim 7
Dependent Claim
53 words
The invention claimed in claim 1 wherein said intumescent disc means comprises first, second and third disc means, said assembly further including a first joinder member securing said first and second disc means to said second cup member and a second joinder member securing said third disc means to said second disc means.
Claim 8
Dependent Claim
37 words
The invention claimed in claim 6 wherein said first joinder member extends through said first and second disc means at radially interior locations therein and has a part thereof disposed between said second and third disc means.
Claim 9
Dependent Claim
33 words
The invention claimed in claim 7 wherein said second joinder member extends centrally through said second and third disc means and has a part thereof disposed between said first and second disc means.
Claim 10
Dependent Claim
17 words
The invention claimed in claim 6 wherein said first disc comprises a plurality of individual intumescent discs.
Claim 11
Dependent Claim
25 words
The invention claimed in claim 1 further including bracket means secured to said first cup member, said cover being releasably secured to said bracket means.
Claim 12
Dependent Claim
18 words
The invention claimed in claim 10 wherein said bracket means is fixedly secured to said first cup member.
Claim 13
Dependent Claim
14 words
The invention claimed in claim 10 wherein said cover includes a tapered peripheral portion.
Claim 14
Dependent Claim
19 words
The invention claimed in claim 10 wherein said cover has a diameter exceeding that of said first cup member.
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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |