US3908323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Void creating device to be embedded in a concrete structure
Assignee: Individual
•
Filing: 1974-07-11
•
Granted: 1975-09-30
•
Expires: 1994-07-11
Abstract
Abstract A device to be embedded in a concrete structure in order to define a labyrinth of passageways within the concrete structure is formed of frangible material and comprises an elongated hollow member preferably made of two interfitting sections, with the hollow member having at least two opposed projections disposed intermediate the length of the hollow member. When embedded in concrete, the ends of the elongated hollow member and the ends of the opposed projections extend to the surface of the concrete such that such projecting frangible elements may be punched out or removed in order to enable the passage of service lines through the interior of the concrete structure.
Inventors
- 👤 Robert K Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/16; E04B1/161; E04B1/18; E04B2/00; E04B2/84; E04B5/00; E04B5/16; E04B5/32; E04B5/326; E04B5/48
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
109 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded frangible material, said member having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles, and are of the tongue and groove configuration to enable interfitting of two such void creating devices along the longitudinal axes thereof.
Claim 2
Dependent Claim
109 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded frangible material, said member having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles, and are of the tongue and groove configuration to enable interfitting of two such void creating devices along the longitudinal axes thereof.
Claim 3
Dependent Claim
19 words
A void creating device as in claim 1 wherein said hollow member is made of two interfitting elongated sections.
Claim 4
Dependent Claim
15 words
A void creating device as in claim 1 wherein said member is of integral construction.
Claim 5
Dependent Claim
34 words
A void creating device as in claim 1 wherein said member has a generally rectangular cross section with each set of spaced, opposed projections being disposed on opposite sides of said rectangular cross section.
Claim 6
Dependent Claim
20 words
A void creating device as in claim 1 further including spacer elements projecting from one set of said opposed projections.
Claim 7
Dependent Claim
19 words
A void creating device as in claim 5 wherein each of said spacer elements is of truncated cone shape.
Claim 8
Dependent Claim
26 words
A void creating device as in claim 1 wherein said hollow member is of generally rectangular cross section and includes tapered corners along the length thereof.
Claim 9
Dependent Claim
30 words
A void creating device as in claim 1 further including internal baffles extending orthagonal to the longitudinal axis of said device in order to compartmentalize the internal hollow portion thereof.
Claim 10
Dependent Claim
30 words
A void creating device as in claim 1 further including elongated strips projecting from opposite sides of the elongated hollow member and extending intermediate said first set of opposed projections.
Claim 11
Dependent Claim
17 words
A void creating device as in claim 1 wherein said hollow member is made of insulation material.
Claim 12
Dependent Claim
24 words
A void creating device as in claim 2 wherein said sections include a cooperating locking means for maintaining the sections in a locked position.
Claim 13
Dependent Claim
17 words
A void creating device as in claim 1 wherein one pair of said opposed projections are tapered.
Claim 14
Dependent Claim
15 words
A void creating device as in claim 1 wherein said member is made of polystyrene.
Claim 15
Dependent Claim
39 words
A void creating device as in claim 1 wherein each opposed projection is hollow, with the respective opPosed projections being of a tongue and groove configuration for enabling interfitting and interconnection of two such devices along the sides thereof.
Claim 16
Dependent Claim
21 words
A void creating device as in claim 14 wherein there are provided internal baffles for compartmentalizing the interior of said device.
Claim 17
Dependent Claim
19 words
A void creating device as in claim 15 further including spacer elements projecting from one set of opposed projections.
Claim 18
Dependent Claim
118 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded, frangible insulation material, said member made of two interfitting elongated sections, said member having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles, and are of the tongue and groove configuration to enable interfitting of two such void creating device along the longitudinal axes thereof.
Claim 19
Dependent Claim
118 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded, frangible insulation material, said member made of two interfitting elongated sections, said member having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles, and are of the tongue and groove configuration to enable interfitting of two such void creating device along the longitudinal axes thereof.
Claim 20
Dependent Claim
30 words
A void creating device as in claim 17 further including spacer elements projecting from one set of said opposed projections, each of said spacer elements being of truncated cone shape.
Claim 21
Dependent Claim
26 words
A void creating device as in claim 17 wherein said hollow member is of generally rectangular cross section, and includes tapered corners along the length thereof.
Claim 22
Dependent Claim
24 words
A void creating device as in claim 17 wherein said sections include a cooperating locking means for maintaining the sections in a locked position.
Claim 23
Dependent Claim
15 words
A void creating device as in claim 17 wherein said member is made of polystyrene.
Claim 24
Dependent Claim
131 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded frangible material, said member being made of two interfitting elongated sections, and having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles of the tongue and groove configuration to enable interfitting of two such void creating devices along the longitudinal axes thereof, and wherein said member is provided with internal baffles for compartmentalizing the interior of said device.
Claim 25
Dependent Claim
131 words
A void creating device to be embedded in a concrete structure to define a labyrinth of passageways therein comprising an elongated hollow member made of a molded frangible material, said member being made of two interfitting elongated sections, and having a first plurality of spaced, opposed projections disposed along the length thereof, and a second set of opposed, spaced projections extending along the length thereof, with said second set of projections extending generally orthagonal to the first set of spaced, opposed projections, and wherein the ends of said hollow member are closed by frangible baffles of the tongue and groove configuration to enable interfitting of two such void creating devices along the longitudinal axes thereof, and wherein said member is provided with internal baffles for compartmentalizing the interior of said device.
Claim 26
Dependent Claim
30 words
A void creating device as in claim 22 further including elongated strips projecting from opposite sides of the elongated hollow member and extending intermediate said first set of opposed projections.
Claim 27
Dependent Claim
17 words
A void creating device as in claim 22 wherein one set of said opposed projections are tapered.
Claim 28
Dependent Claim
22 words
A void creating device as in claim 24 wherein said set of tapered opposed projections are of the tongue and groove configuration.
References Cited (Backward Citations)
CA702403A
Cited
US1368109A
Cited
US1729356A
Cited
US1986874A
Cited
AU131501B2
Cited
US2810233A
Cited
US3456407A
Cited
US3611609A
Cited
US3731448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |