US3776217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nursing box for babies or similar purposes
Assignee: Pielkenrood Vinitex BV
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Filing: 1970-12-04
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Granted: 1973-12-04
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Expires: 1990-12-04
Abstract
Abstract A dust-free box for babies or similar purposes comprising a blower assembly and air filters for producing a substantially horizontal, non-turbulent and dust-free air flow in the interior space of the box proper, which flow is directed through a front opening. When the front wall is in a closed position, a relatively small slot remains open to provide this opening. When the front wall is in an open position, the inner surfaces thereof are kept out of contact with the outside air. Auxiliary means inside the box do not disturb the dust-free condition therein and/or are maintained dust-free during use and when not in use.
Inventors
- 👤 Galen P Van
- 👤 Nes J Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
A; A61; A61G; A61G11/00; F; F24; F24F; F24F3/00; F24F3/12; F24F3/16; F24F3/163; A61G11/005; A61G11/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
219 words
A dust-free baby nursing box comprising in combination: a nursing chamber defined by a bottom wall, a pair of opposed upstanding walls adjoining said bottom wall, a top wall extending between said side walls, a front wall adjoining said top wall and an upstanding back wall adjoining said bottom, side and top walls and having air flow passages which substantially extend across the height and width of said chamber with at least a portion of said top and bottom walls being transparent, the upper edge of said front wall being hinged to said top wall and the lower edge of said front wall being vertically spaced above said bottom wall to define an access opening therebetween when said front wall is in a closed position; an air supply chamber positioned adjacent said back wall communicating with substantially the entire surface of said back wall; dust filtering means interposed said back wall and said air supply chamber; and blower means connected to said air supply chamber providing pressurized air thereto so that filtered air flows in a substantially non-turbulent manner, substantially throughout the height and width of said nursing chamber, from said back wall towards said access opening, the flow rate of said filtered air being sufficient to prevent outside air from entering said nursing chamber through said access opening.
Claim 2
Dependent Claim
219 words
A dust-free baby nursing box comprising in combination: a nursing chamber defined by a bottom wall, a pair of opposed upstanding walls adjoining said bottom wall, a top wall extending between said side walls, a front wall adjoining said top wall and an upstanding back wall adjoining said bottom, side and top walls and having air flow passages which substantially extend across the height and width of said chamber with at least a portion of said top and bottom walls being transparent, the upper edge of said front wall being hinged to said top wall and the lower edge of said front wall being vertically spaced above said bottom wall to define an access opening therebetween when said front wall is in a closed position; an air supply chamber positioned adjacent said back wall communicating with substantially the entire surface of said back wall; dust filtering means interposed said back wall and said air supply chamber; and blower means connected to said air supply chamber providing pressurized air thereto so that filtered air flows in a substantially non-turbulent manner, substantially throughout the height and width of said nursing chamber, from said back wall towards said access opening, the flow rate of said filtered air being sufficient to prevent outside air from entering said nursing chamber through said access opening.
Claim 3
Dependent Claim
115 words
The combination according to claim 1 wherein said front wall comprises an upper section connected at its upper edge to said top wall by a first hinge means, and a lower section connected at its upper edge to the lower edge of said upper section by a second hinge means; and further comprises vertical guide means located on the inside of said side walls, the opposite edges of said lower section being slidably mounted in respective of said guide means and said first and second hinge means being oppositely directed so that, vertical movement of said lower section with respect to said side walls, causes the upper and lower sections to fold towards each other.
Claim 4
Dependent Claim
39 words
The combination according to claim 2 wherein said first and second hinge means are arranged so that said vertical movement of the lower section causes the inner Surfaces of said upper and lower sections to fold towards each other.
Claim 5
Dependent Claim
40 words
The combination according to claim 3 including an air flow guiding plate which is hinged at its upper edge to said upper section near said first hinge means and is slidably mounted at its lower edge to said lower section.
Claim 6
Dependent Claim
39 words
The combination according to claim 2 wherein said first and second hinge means are arranged so that said vertical movement of the lower section causes the outer surfaces of said upper and lower sections to fold towards each other.
Claim 7
Dependent Claim
36 words
The combination according to claim 5 including an air flow guiding plate which is hinged at its lower edge to said upper section near said second hinge means and is slidably mounted to said top wall.
Claim 8
Dependent Claim
51 words
The combination according to claim 2 wherein said front wall includes at least one aperture, located at the opposite outer edges thereof near respective of said side walls, through which a portion of said filtered air flowing along the inside surface of said side walls is discharged from said nursing chamber.
Claim 9
Dependent Claim
17 words
The combination according to claim 2 wherein said first and second hinge means are substantially air tight.
Claim 10
Dependent Claim
76 words
The combination according to claim 2 including a support structure resting on a floor on which said nursing chamber is mounted, said bottom wall being vertically spaced from said floor; and an air intake means having an intake opening which is positioned below said bottom wall, said intake opening being directed upwardly from said floor and arranged so that a portion of said filtered air exiting through said access opening is recirculated to said blower means.
Claim 11
Dependent Claim
104 words
The combination according to claim 2 including an auxiliary wall assembly positioned inside said nursing chamber and defining a smaller chamber inside of which a baby can be placed; and said auxiliary wall assembly having a front wall comprised of upper and lower sections which are interconnected by a hinge, the lower section being further hinged at its lower edge to the bottom wall of said nursing chamber so that the inner surfaces of said auxiliary front wall sections can be folded towards each other and the outer surface of the lower section can be moved against the bottom wall of said nursing chamber.
Claim 12
Dependent Claim
148 words
The combination according to claim 1 wherein said front wall can be raised vertically to an open position to increase the size of said access opening; said blower means is capable of providing pressurized air flow at two operating levels, the air flow provided by said blower means at the first operating level being sufficient to prevent outside air from entering said nursing chamber through said access opening, when said front wall is in the closed position, and the air provided by said blower means at the second operating level being sufficient to prevent outside air from entering said nursing chamber when said wall is in the open position; and said combination further including a switching means cooperating with said front wall and said blower means for switching said blower means to and from the first and second operating levels depending upon the position of said front wall.
Claim 13
Dependent Claim
70 words
The combination according to claim 1 including an auxiliary bottom positioned inside said nursing chamber above said bottom wall for supporting a baby to be nursed, said auxiliary bottom being supported on vertical legs extending through said bottom wall; and weighing means, positioned outside of said nursing chamber below said bottom wall and operatively connected to said support legs of said auxiliary bottom, for determining the weight of the baby.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |