US3824934A - Lock chamber for protective enclosures - Google Patents

Lock chamber for protective enclosures Download PDF

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Publication number
US3824934A
US3824934A US00314238A US31423872A US3824934A US 3824934 A US3824934 A US 3824934A US 00314238 A US00314238 A US 00314238A US 31423872 A US31423872 A US 31423872A US 3824934 A US3824934 A US 3824934A
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US
United States
Prior art keywords
lock chamber
slit
shelter
door
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00314238A
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English (en)
Inventor
L Laakkonen
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Temet Oy
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Temet Oy
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Publication date
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Publication of US3824934A publication Critical patent/US3824934A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor

Definitions

  • the lock Chamber is at one Side P 135/14 D, 1 R vided with an entrance opening corresponding in size to the opening of said protecting doors and at the op- 5 References Cited posite side with a vertical closable slit opening.
  • the UNITED STATES PATENTS shelter is intended to be gas tightly fixed around the frame of said protecting door. 2,268,941 1/1942 Horstman 49/58 2,406,942 9/1946 Buttner 49/68 x 7 Claims, 7 Drawing' Figures s 7 "Z I; 8 24,
  • the subject of the present invention is alock cham ber for protective enclosures and the like for the formation of a cleaning space between the protecting door and the protected space so as to prevent contaminations from coming into the protected space.
  • a lock room is constructed between the protecting door and the protected space proper so as to prevent the outdoor air containing dangerous materials and contaminants adhering to people coming in from coming into the air-raid shelter when the protecting door is opened.
  • the purpose of the lock room is to allow a person coming from outdoors to clean himself and to remove the air that has come into the lock room out of same before the inner door to the protected space is opened.
  • a purpose of the present invention is to eliminate the above drawbacks, and this purpose is achieved by means of the lock chamber in accordance with the invention, which chamber'is characterized in that it consists of a collapsible shelter enclosing the said cleaning space and made of a flexible, gas-tight material, which shelter has on one side an opening at least of a size corresponding to the protecting door and being able to be fastened at its edges onto the frame of the protecting door on the side of the protected space, and on the other side there is an entrance opening leading into the protected space and being able to be closed.
  • the shelter is made so that is has preferably a triangular horizontal section, whereby one side of the triangle acts as a door-size entrance opening directed at the protecting door and the other side acts as an entrance opening directed towards the protected space, which can be opened so as to make it a door-sized opening and which is used as the entrance passage prior to a situation of danger, for stretchers etc. and as the air inlet opening and, during a situation of danger, as a slit-shaped entrance opening.
  • the shelter is made so that it has the smallest possible volume, preferably corresponding to the cleansing operations of one person only, whereby the contaminated air that has come into this shelter can be rapidly expelled and the shelter can be cleansed efficiently.
  • the shelter in accordance with the invention represents an improvement in the respect that after the protecting door it is not necessary to pass through an additional gas-tight door.
  • the waste space caused by the lock room is also omitted.
  • the entrance opening consists of a slit extending substantially from the ceiling face of the shelter to the floor face vertically whereby the top and the bottom end of the slit are connected to springs which tend to pull the said ends flexibly away from each other.
  • the springs make it possible to widen the slit to such an extent that a person can pass through the same and thereafter automatically close the slit by pulling the top end and the bottom end of the slit upwards and downwards,
  • FIG. 3 shows the fastening frames of the lock chamber as a front view
  • FIG. 4 shows, on a larger scale, a side view of the tensioning spring and the vertical support of the lock chamber
  • FIG. 5 shows an enlarged cross-section view of the fastening frame
  • FIG. 6 shows a part of the lock chamber in the storage position
  • FIG. 7 shows the same as a horizontal section.
  • the wall construction 1 is shown that separates the protected space 2 of the air-raid shelter or other protective enclosure from the outside space and in which a protecting door 3 with frame 4 has been installed.
  • the lock chamber in accordance with the invention comprises a shelter 5 which has been made of a flexible, gas-tight, firm material and the horizontal section of which has the shape of an equilateral triangle (FIG. 1) and the vertical section of which is rectangular (FIG. 2).
  • the side of the shelter located towards the protecting door 3 is fully open and somewhat larger than the door opening of the protecting door so that at one side of the door opening a free space remains for relief valves 6 installed in the wall construction (FIG. 3).
  • the shelter comprises two rectangular vertical side faces 50 and 5b and triangular horizontal floor and ceiling faces 5c and 5d.
  • a body frame 7 has been fastened to the wall construction.
  • a fastening frame 8 of equal shape has been fastened, which frame is fastened to the body frame by means of screws 9 through a gasket 10 (FIG. 5).
  • the vertical corner edge 52 of the shelter located opposite the door opening is provided with a support rod 11 the top and bottom ends of which are fitted with hooks for binding the support rod by means of ropes 12 to the fastening units sunk in the ceiling and floor of the protected space. In this way the shelter can be stretched out.
  • One side face of the shelter is provided with a vertical slit 13 that extends substantially from the top edge of the side face to the bottom face and that forms an en trance opening through which the air-raid shelter is entered and left during risk of contamination.
  • the slit is provided with a zipper 14.
  • the top and bottom ends of the slit are at positions 15 connected to spring arms 16 inserted into corresponding fastening sockets 17 fastened to the support rod 11 (FIG. 4).
  • the spring arms tend to pull the opposite ends of the slit apart from each other so that the edges of the slit are pressed against each other over the entire length of the slit.
  • the other side face of the shelter, b, is whole.
  • the top and bottom ends of the vertical slit 13 are accompanied by horizontal slits 18 which are likewise provided with zippers 19.
  • the -shaped slit 13, 18 formed in this way permits the opening of the entire side face so that an entrance opening is formed'through which it is possible to go or to take fresh air when there is no risk of contamination, as well as, for example, to carry stretchers.
  • Another important function of the -shaped slit is to permit the shelter being moved entirely to the side from the way of the door opening and being fastened to the frame 7, 8 by binding.
  • the shelter can be'moved against the wall construction. In this way the side face 5b of the shelter can be fastened, together with its support rod 11, to the frame component on the left side of the door opening (FIG.
  • the rectangular door flap of the other side face 50 of the shelter can be bound to the right frame component
  • the floor face 50 together with the bottom part of the side face 5a can be bound to the bottom component of the frame
  • the ceiling face 5d together with the top part of side face 5a can be bound to the top component of the frame
  • the shelter are provided with appropriate hooks 20 and loops 21 (FIG. 6 and 7). If desired, the top and bottom sections and the right part of the shelter may be allowed to remain unbound.
  • the shelter with its support rod, springs and frames can be supplied as separate components which can be easily assembled at the site by means of simple equipment.
  • the fastening frame 8 preferably consists of four separate components, which can be easily assembled at the corners into appropriate recesses and by means of simple clamps.
  • a lock chamber for a protective enclosure having a protecting door surrounded by a rectangular door frame comprising a collapsible shelterof flexible gastight material having a triangular floor and a triangular ceiling and two rectangular walls joined at top and bottom to two sides of said triangular ceiling and floor, respectively, and open on one side, means for securing said enclosure to a said door frame about said door on said one side of said enclosure, and means defining a vertical slit in one of said two sides extending substantially from said ceiling to said floor.
  • a lock chamber as claimed in claim 2 and a vertical support rod in the corner edge of said chamber opposite said open side thereof.
  • a lock chamber as claimed in claim 1 and horizontal slits connected at their ends to said vertical slit to define an entry flap for said chamber.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
US00314238A 1971-12-13 1972-12-11 Lock chamber for protective enclosures Expired - Lifetime US3824934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI713545A FI46202C (fi) 1971-12-13 1971-12-13 Sulkukammio väestösuojia ja sentapaisia varten.

Publications (1)

Publication Number Publication Date
US3824934A true US3824934A (en) 1974-07-23

Family

ID=8508551

Family Applications (1)

Application Number Title Priority Date Filing Date
US00314238A Expired - Lifetime US3824934A (en) 1971-12-13 1972-12-11 Lock chamber for protective enclosures

Country Status (5)

Country Link
US (1) US3824934A (cg-RX-API-DMAC10.html)
CH (1) CH549150A (cg-RX-API-DMAC10.html)
FI (1) FI46202C (cg-RX-API-DMAC10.html)
NO (1) NO132164C (cg-RX-API-DMAC10.html)
SE (1) SE393427C (cg-RX-API-DMAC10.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6730853B1 (en) 2003-02-10 2004-05-04 Kenneth P. Baker Rodent obstructing system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268941A (en) * 1940-06-03 1942-01-06 Walter G Horstman Fly guard for screen doors and like
US2406942A (en) * 1943-10-23 1946-09-03 Gen Motors Corp Sealed doors
US2910994A (en) * 1957-05-08 1959-11-03 Kenneth E Joy Inflatable inclosure
US2977106A (en) * 1957-05-08 1961-03-28 Selas Corp Of America Furnace closure
CH436677A (de) * 1964-05-16 1967-05-31 Bruegge Heinz Von einem inneren Luftüberdruck getragene Halle
US3500593A (en) * 1967-01-20 1970-03-17 John P Kwake Enclosure for entry into inflatable structures and for other purposes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268941A (en) * 1940-06-03 1942-01-06 Walter G Horstman Fly guard for screen doors and like
US2406942A (en) * 1943-10-23 1946-09-03 Gen Motors Corp Sealed doors
US2910994A (en) * 1957-05-08 1959-11-03 Kenneth E Joy Inflatable inclosure
US2977106A (en) * 1957-05-08 1961-03-28 Selas Corp Of America Furnace closure
CH436677A (de) * 1964-05-16 1967-05-31 Bruegge Heinz Von einem inneren Luftüberdruck getragene Halle
US3500593A (en) * 1967-01-20 1970-03-17 John P Kwake Enclosure for entry into inflatable structures and for other purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6730853B1 (en) 2003-02-10 2004-05-04 Kenneth P. Baker Rodent obstructing system

Also Published As

Publication number Publication date
CH549150A (de) 1974-05-15
NO132164B (cg-RX-API-DMAC10.html) 1975-06-16
SE393427B (sv) 1977-05-09
NO132164C (cg-RX-API-DMAC10.html) 1977-06-02
FI46202C (fi) 1973-02-07
FI46202B (cg-RX-API-DMAC10.html) 1972-10-02
SE393427C (sv) 1979-04-02

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