Patent US4245445A successfully refreshed from Google Patents.
US4245445A
Expired / Lapsed
US
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Method for making a fire-proof passage and passage obtained thereby
Assignee: Intellectual Trade Co SA
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Filing: 1978-01-31
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Granted: 1981-01-20
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Expires: 1998-01-31
Abstract
Abstract There is described a method for passing through a wall or ceiling with elements such as electric cables, ducts, pipes, etc., whereby said wall has at least one passage opening for said elements or such an opening is made in said wall, which comprises making use of a cushion which is fireresistant enough, at least one surface of said cushion is covered with a fire-proof compound, said opening is closed with said cushion, a flange from fire-resisting material is arranged against at least one cushion surface for each element or element group, in such a way as to surround the element or element group, and the hollow space remaining inside the flange is filled with a fire-proof material.
Inventors
- 👤 Hans D. J. Heinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:38
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/22; F; F16; F16L; F16L5/00; F16L5/02; F16L5/04
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
107 words
Method for passing through a wall or ceiling with elements such as electric cables, ducts, pipes, etc., whereby said wall has at least one passage opening for said elements, which comprises making use of a cushion which is fire-resistant, at least a portion of one surface of said cushion is covered with a fire-proof compound, said opening is closed with said cushion, a flange from fire-resisting material is arranged against at least one cushion surface for each element or element group, in such a way as to surround the element or element group, and the hollow space remaining inside the flange is filled with a fire-proof material.
Claim 2
Dependent Claim
107 words
Method for passing through a wall or ceiling with elements such as electric cables, ducts, pipes, etc., whereby said wall has at least one passage opening for said elements, which comprises making use of a cushion which is fire-resistant, at least a portion of one surface of said cushion is covered with a fire-proof compound, said opening is closed with said cushion, a flange from fire-resisting material is arranged against at least one cushion surface for each element or element group, in such a way as to surround the element or element group, and the hollow space remaining inside the flange is filled with a fire-proof material.
Claim 3
Dependent Claim
46 words
Method as defined in claim 1, in which when the elements pass through a substantially vertical wall, said element is surrounded at the bottom and sidewise with a portion of cup-forming flange, the hollow space remaining inside said flange portion being filled with a fire-proof material.
Claim 4
Dependent Claim
60 words
Method as defined in claim 1, in which when the elements go through a ceiling or a substantially horizontal wall, use is made of a flange which is built-up about said element or element group by means of at least two parts forming together about said element or element group, a hollow space which is filled with a fire-proof material.
Claim 5
Dependent Claim
25 words
Method as defined in claim 1, in which after sealing said opening with the cushion, a number of said elements are passed through said cushion.
Claim 6
Dependent Claim
46 words
Method as defined in claim 1, in which after first arranging said elements passing through the wall inside said passage opening, before locating said cushion, said cushion is provided about said elements by arranging thereabout a plurality of parts the assembly of which forms said cushion.
Claim 7
Dependent Claim
22 words
Method as defined in claim 1, in which the cushion is applied against that wall or ceiling portion which surrounds said opening.
Claim 8
Dependent Claim
16 words
Method as defined in claim 4, in which said cushion is arranged inside a metal frame.
Claim 9
Dependent Claim
30 words
Method as defined in claim 5, in which a metal frame, is mounted about the cushion edges, said cushion being assembled about elements which go through said wall or ceiling.
Claim 10
Dependent Claim
18 words
Method as defined in claim 7, in which the metal frame is applied against said wall or ceiling.
Claim 11
Dependent Claim
21 words
Method as defined in claim 8, in which the frame mounted about said cushion is applied against said wall or ceiling.
Claim 12
Dependent Claim
16 words
Method as defined in claim 1, in which a fire-proof plaster is poured inside said flange.
Claim 13
Dependent Claim
16 words
Method as defined in claim 1, in which a fire-proof compound is poured inside said flange.
Claim 14
Dependent Claim
28 words
Method as defined in claim 2, in which the flange is completed by means of a fire-proof material part acting as pad or cover insuring a complete sheating.
Claim 15
Dependent Claim
19 words
Method as defined in claim 1, in which the flange is at least partly coated with a fire-proof compound.
Claim 16
Dependent Claim
25 words
Method as defined in claim 1, in which said elements going through said cushion are retained spaced by means of bracing parts from fire-proof material.
Claim 17
Dependent Claim
78 words
Method as defined in claim 15, in which the bracing of said elements is obtained by arranging along one direction a jig in parallel relationship with an element row and by guiding inside said jig provided with openings therefor, a pin which braces the elements along a direction at right angle to said first direction, the pin being removed after introducing said fire-proof plaster or compound and after locating between said elements a bracing part from fire-proof material.
Claim 18
Dependent Claim
29 words
Method as defined in claim 1, in which the flanges and the cushion are coated with a layer of fire-proof compound with a thickness from 2 to 8 mm.
Claim 19
Dependent Claim
68 words
Passage for the fire-proof passing of elements such as electric cables, ducts, pipes, etc., which comprises a cushion from fire-proof material which is coated with a fire-resisting compound, a number of openings provided in said cushion, and at least one flange of fire-proof material coated with fire-resisting compound, said flange being positioned against said cushion, and fire-proof material for filling the space between said flange and the elements.
Claim 20
Dependent Claim
68 words
Passage for the fire-proof passing of elements such as electric cables, ducts, pipes, etc., which comprises a cushion from fire-proof material which is coated with a fire-resisting compound, a number of openings provided in said cushion, and at least one flange of fire-proof material coated with fire-resisting compound, said flange being positioned against said cushion, and fire-proof material for filling the space between said flange and the elements.
Claim 21
Dependent Claim
16 words
Passage as defined in claim 18, in which said cushion is clamped inside a metal frame.
Claim 22
Dependent Claim
15 words
Passage as defined in claim 19, in which said frame is of Z-shape in cross-section.
Claim 23
Dependent Claim
17 words
Passage as defined in claim 18, in which the fire-proof material comprising said cushion is rock wool.
Claim 24
Dependent Claim
23 words
Passage as defined in claim 21, in which said rock wool has a mean density of at least 100 kg per cubic meter.
Claim 25
Dependent Claim
22 words
Passage as defined in claim 18, in which said cushion from fire-proof material has a thickness from about 100 to 200 mm.
Claim 26
Dependent Claim
42 words
Passage as defined in claim 18, in which said cushion from fire-proof material is comprised of at least two layers of fire-proof material joined together with a fire-resisting compound and with at least one exposed surface thereof coated with a fire-resisting compound.
Claim 27
Dependent Claim
21 words
Passage as defined in claim 19, in which the fire-resisting compound has a layer thickness from about 2 to 8 mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |