Ventilation – Workstation ventilator – Movable
Patent
1995-01-09
1996-05-21
Joyce, Harold
Ventilation
Workstation ventilator
Movable
104 52, F23J 1100
Patent
active
055184472
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device at exhaust-gas extraction hoses for extracting the exhausts from the exhaust pipe on a vehicle, whereby the exhaust-gas extraction hose is mounted at the top in premises and a depending part thereof can be located relative to the exhaust pipe so that exhausts therefrom can be removed through the hose, whereby the exhaust-gas extraction hose is adapted to be retained in an exhaust-gas extracting position when the vehicle is driven in the premises, whereby the exhaust-gas extraction hose is automatically releasable from its exhaust-gas extracting position when the vehicle is driven out of the premises, whereby the exhaust-gas extraction hose includes a retaining device which can be located on the vehicle spaced apart from the exhaust pipe and whereby an end portion of the exhaust-gas extraction hose includes and/or cooperates with a tightening device which can be tightened by bending and/or stretching the end portion and which retains said end portion in fan exhaust-gas extracting position when the retaining device is attached to the vehicle.
A device of the above type is already known from our Swedish patent application 9001928-2. This prior art device can be used at most exhaust pipe embodiments and also at most locations of the exhaust pipes. In certain cases however, the exhaust pipes are designed and/or located in such manner that it will be difficult to locate the exhaust-gas extraction hose in a suitable way in relation thereto. Such cases are e.g. when the exhaust pipe has an unusual cross-sectional shape and/or is sensitive to side loads. The exhaust pipe can also be placed beside a part of the body of the vehicle so that the exhaust-gas extraction hose can not be located such that the exhausts are extracted with sufficient efficiency.
The object of the present invention is to eliminate the above problem and provide a simple device which permits the exhaust-gas extraction hose to be placed in suitable positions relative to the exhaust pipe even if the exhaust pipe has an unusual cross-sectional shape and/or is located close to parts of the body. This is arrived at according to the invention substantially while the initially defined device has received the characterizing features of claim 1.
Since the device according to the invention has a spring means with the function as defined in claim 1, it becomes possible to position the exhaust-gas extraction hose such that its support means engages the end edge of the exhaust pipe, whereby it is ensured that the exhaust pipe can be subjected neither to side loads nor to damages on its sides. Furthermore, the exhaust-gas extraction hose can be located such that it with its end edge with pressure engages a body part close to the exhaust pipe instead of engaging said exhaust pipe directly, which is advantageous if the exhaust pipe is mounted close to such a body part.
The invention will be further described below with reference to the accompanying drawings, wherein
FIG. 1 with a side view and in section illustrates an exhaust-gas extraction hose forming part of the device according to the invention;
FIG. 2 is a side view of the hose in a disconnected position adjacent a vehicle to which said hose shall be connected for extracting exhausts from its exhaust pipe;
FIG. 3 is a side view of the hose during the coupling moment during which said hose is connected to the vehicle;
FIG. 4 is a side view of the hose when connected to the vehicle such that exhausts are extracted from the exhaust pipe of the vehicle through said hose; and
FIG. 5 is a side view of the hose when connected to the vehicle and such that exhausts can be extracted from the exhaust pipe of the vehicle but in a somewhat different manner than shown in FIG. 4.
In the drawings there is shown an exhaust-gas extraction hose 1 which is mounted in premises 2, e.g. a fire station, for connection to a vehicle 4, e.g. a fire-fighting vehicle, such that exhausts from the exhaust pipe 3 of the vehicle 4 can be extracted from the premises 2 through the hose 1. The exhau
REFERENCES:
patent: 3492937 (1970-02-01), Ameli
patent: 5162017 (1992-11-01), Nordin
AB Ph. Nederman & Co.
Joyce Harold
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