Cutlery – Cutting tools – With support or attaching means
Patent
1997-01-02
1999-07-06
Watts, Douglas D.
Cutlery
Cutting tools
With support or attaching means
2808011, 297468, B26B 2700
Patent
active
059183721
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a rescue knife for seat belts. Seat belts can become locked in automotive vehicles after an accident and interfere with an injured person's escape. Therefore, rescue knives are important because they allow injured persons to free themselves after an accident.
2. Description of the Prior Art
The use of rescue knives for seat belts is known in the prior art. For example, German Patents 2605477, and 3224821 and European Patent 070439 disclose rescue knives with an immovable edge fixed in the cutting slot of a holder. These type holders have a grip shaped to adapt to a human palm.
These types of knives are stored in a glove compartment or can be hung on a hook and fastened to a car body, by means of an opening in the knife grip.
If the knife is not accessible, or not known to the occupants then there is an increased danger for these occupants if they are trapped in the seatbelts during an accident.
In addition, German utility model U 9115692 shows a seat belt mounted rescue knife. This rescue knife has a knife edge mounted in a slanted cutting slot that is in a holder having rounded corners. The knife is also provided with a fastening device in the form of a carriage mounted slidingly on a seat belt.
The present invention is an improvement over the prior art because it includes two set bosses located on the holder. The set bosses are designed to prevent the holder from sliding down the seat belt.
SUMMARY OF THE INVENTION
One object of the invention is to provide a cutting knife that is easy to access. Another object of the invention is to provide a knife mounting arrangement that allows for suspension height adjustment.
To achieve these objects, there is provided a rescue knife having an edge of constant cutting angle. The edge is fixed in a holder with a slanted cutting slot that has rounded corners. There is also provided a quick releasable fastening unit having a mechanism to adjust the suspension of seat height on the seat belt. The fastening unit consists of two parallel guides permanently joined with the holder. These guides are small in width, and spaced from each other across the width of the seat belt. Two set bosses are situated symmetrically on a part of length of the guides that are a suspension mechanism.
The guides should be monolithic holder elements in the form of symmetrical strips beveled symmetrically at least one end and situated above the holder.
In a second embodiment of the invention, the knife is housed in a quick releasable knife holder. This knife holder has a catch coaxial with the holder and connected permanently to it. In addition, secured to the seat belt is a channel seat belt clamp having a suspension height adjustment mechanism being a rotatable wedge with a grip. In this grip is a catch hole designed to receive the catch and hold the knife holder in place on the seat belt.
This invention enables a quick release suspension of a rescue knife on a seat belt in a well visible and accessible place. In addition, this device also allows the height adjustment of the holder on the seat belt to allow easy access to the knife.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects and features of the present invention will become apparent from the following detailed description considered in connection with the accompanying drawings which disclose two embodiments of the present invention. It should be understood, however, that the drawings are designed for the purpose of illustration only and not as a definition of the limits of the invention.
In the drawings, wherein similar reference characters denote similar elements throughout the several views:
FIG. 1 is a view of the knife seen from the guide slide;
FIG. 2 is a cross-sectional view of the knife;
FIG. 3 is a perspective view of the knife situated on the seat belt;
FIG. 4 is a perspective view of the channel clamp together with a rotatable wedge on the seat belt;
FIG. 5 is a cross section of the clamp; and
FIG. 6 is a perspective view of the knife from th
REFERENCES:
patent: 4371192 (1983-02-01), Alix
patent: 4680861 (1987-07-01), Meurer
"Bras-Pol" Spolka Z O. O.
Watts Douglas D.
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