US3875853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly for separating a part of a space
Assignee: Pielkenrood Vinitex BV
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Filing: 1972-10-26
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Granted: 1975-04-08
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Expires: 1992-10-26
Abstract
Abstract An assembly for separating a part from a space, adapted to keep the air inside this part separated from the air outside that part, which assembly comprises an upper wall which is pervious for air and which is supported on a framework, and further comprises side walls which consist, at least partially, of a transparent plastics foil or plate material, and which extend to the vicinity of the bottom. A raised floor is provided inside the separated space with suction channels in the raised floor communicating with suction openings in the side walls of the floor and with suction units connected or connectable to the suction channels. The suction units are provided with fine dust filters which are adapted to remove disease germs from the air which is exhausted from the separated part of the space.
Inventors
- 👤 Simon Pielkenrood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:07
CPC Classifications
A; A61; A61G; A61G13/00; A61G13/10; A61G13/108; A61G10/00; A61G10/02; F; F24; F24F; F24F8/00; F24F8/10; F24F8/108; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
248 words
An assembly for providing an enclosed space to be isolated and separated from its surroundings in that direct air flow from said space to said surroundings is impeded, comprising: a frame having a pervious top structure and side walls, having inner and outer surfaces, which extend from the top structure to the vicinity of the bottom thereof, and establishing lateral boundaries of the space as defined therewith, at least a portion of the side walls being flexible and suspended from the top structure at an upper edge and terminating in a lower edge above a floor, thereby forming a gap for permitting an air flow through the gap between a the floor and the lower edge of the suspended side walls; a raised platform on the floor having suction channels communicating with at least one suction opening, having a lower edge, the side walls extending down, below the lower edge of the suction opening. a suction unit connected to the suction opening for sucking air through the gap between the lower edge of the suspended side walls and the platform as well as from the space into the suction openings through said channels, thereby sustaining a down draft from said pervious top sturcture and maintaining an air curtain through continuous air flow from the surroundings through the gap underneath at least the bottom of the suspended portion of the side walls; and filter means included in the suction means capable of removing germs as sucked from said space.
Claim 2
Dependent Claim
248 words
An assembly for providing an enclosed space to be isolated and separated from its surroundings in that direct air flow from said space to said surroundings is impeded, comprising: a frame having a pervious top structure and side walls, having inner and outer surfaces, which extend from the top structure to the vicinity of the bottom thereof, and establishing lateral boundaries of the space as defined therewith, at least a portion of the side walls being flexible and suspended from the top structure at an upper edge and terminating in a lower edge above a floor, thereby forming a gap for permitting an air flow through the gap between a the floor and the lower edge of the suspended side walls; a raised platform on the floor having suction channels communicating with at least one suction opening, having a lower edge, the side walls extending down, below the lower edge of the suction opening. a suction unit connected to the suction opening for sucking air through the gap between the lower edge of the suspended side walls and the platform as well as from the space into the suction openings through said channels, thereby sustaining a down draft from said pervious top sturcture and maintaining an air curtain through continuous air flow from the surroundings through the gap underneath at least the bottom of the suspended portion of the side walls; and filter means included in the suction means capable of removing germs as sucked from said space.
Claim 3
Dependent Claim
43 words
The assembly of claim 1, characterized in that additional dust filters are included in the top structure and having a sufficient flow resistance for preventing contaminated air from leaking away through the top structure in the case of failure of a suction unit.
Claim 4
Dependent Claim
23 words
The assembly of claim 2, characterized by at least one blower as an air supply to the dust filters of the top structure.
Claim 5
Dependent Claim
27 words
The assembly of claim 3, characterized by safety means for switching off the at least one supply blower in the case of failure of a suction unit.
Claim 6
Dependent Claim
18 words
The assembly of claim 3 characterized by similar filter-blower units for exhausting as well as for supplying air.
Claim 7
Dependent Claim
50 words
The assembly of claim 1, characterized by a baffle arranged adjacent to the bottom at the outer side of a side wall and extending above the lower edge of this side wall, and forming an air lock together with this side wall and the raised platform situated inside this wall.
Claim 8
Dependent Claim
29 words
The assembly of claim 6, characterized in that the baffle is formed by a plastics foil lying on the bottom and laid over bars extending parallel to the bottom.
Claim 9
Dependent Claim
49 words
The assembly of claim 1 provided with a resilient flap arranged at the outer surface of the upper edge of each side wall, characterized by a resilient flap at the inner surface of this side wall, and delimiting an air lock together with this wall and the outer flap.
Claim 10
Dependent Claim
23 words
The assembly of claim 8, characterized by suction openings communicating with the space between both flaps and being connected to a suction unit.
Claim 11
Dependent Claim
74 words
The assembly of claim 1, provided with a transfer cabinet, the interior of which communicates with the interior of the separated space by means of a transfer opening in a side wall, characterized by a front lid hinged supported at its upper side for closing the opening of the transfer cabinet, and by suction openings provided in the bottom of this cabinet at least in the vicinity of the lower edge of this lid.
Claim 12
Dependent Claim
51 words
The assembly of claim 10, provided with a suction unit arranged below the transfer cabinet, characterized in that the outflow end of this unit is connected to the air supply of the upper side of the assembly so as to obtain a substantially closed circuit into which additional filters are included.
Claim 13
Dependent Claim
26 words
The assembly of claim 10, characterized in that in at least one side wall of the transfer cabinet an opening closed by a glove is provided.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |