Device for emergency cutting off fastened seatbelts
AssigneeNowak Innovations SpóLka Z Ograniczona Odpowiedzialnoscia
InventorsWieslaw Nowak, Zygmunt Nowak, Janusz Nowak
Life of this patent
Estimating the term…
Abstract
The fastened seatbelts cutting device for transport vehicle, especially automotive vehicles, featuring bushing-shaped housing with an explosive charge or a gas generator inside, the charge and generator connected with a system activating the belt cutting drive, also featuring a cutting knife and a slot for this knife or blade and a slot to house the belt being cut, has a pusher (6) located between the gas generator (4), chamber (3), and the cutting segment (7), sealed with respect to the working chamber (8) in the guide chamber (5), and the blade (9) cutting edge (21) is one of the sides of triangle connected with the blade (9) body seated in the cutting segment (7).
Claims20
A device for emergency cutting off fastened seatbelts in transport vehicle or automotive vehicles, the device having a tubular housing with an explosive charge or a gas generator installed inside, connected with a system activating a drive of belt cutting, furnished with a cutting knife and a gap for the knife or a blade and a gap for the seatbelt being cut to be placed in it, wherein
- a pusher (6) is situated between the gas generator (4) and a cutting segment (7), tight-sealed relative to a work chamber (8) in a guiding chamber (5), and the mass of a cylindrical cutting mandrel (7a) of the cutting segment (7) is adjusted to the power of a gas generator (4) charge, and a cutting edge (21) of the blade (9) is one of the sides of a triangle connected with a body of the blade (9) embedded in the cutting segment (7), wherein
- a first sealing ring (15) is placed on the pusher (6), being a separate part from the cutting segment (7) and a second sealing ring (17) is placed in the guiding chamber (5) at its stop face (22), to prevent inadvertent moving out of the cutting segment (7) towards the belt (20).
A device for emergency cutting off fastened seatbelts in transport vehicles, or automotive vehicles, the device having a tubular housing with an explosive charge or a gas generator installed inside, connected with a system activating a drive of belt cutting, furnished with a cutting knife and a gap for the knife or a blade and a gap for the seatbelt being cut to be placed in it, wherein
- an extended cylindrical mandrel (7a) is situated following the gas generator (4) in a cutting segment (7), wherein
- the extended cylindrical mandrel (7a) constitutes an extension of this cutting segment (7) in the direction of a chamber (3), tight-sealed relative to a work chamber (8) in a guiding chamber (5), and a cutting edge (21) of the blade (9) is one of the sides of a triangle connected with a body of the blade (9) embedded in the cutting segment (7), wherein
- a first sealing ring (15) is placed on the cylindrical mandrel (7a) of the cutting segment (7) and a second sealing ring (17) is placed in the guiding chamber (5) at a stop face (22), to prevent inadvertent moving out of the cutting segment (7) towards the belt (20) and the length (L) of the cutting segment (7) is greater than the length (L1) of the work chamber (8).
A device for emergency cutting off fastened seatbelts in transport vehicles, or automotive vehicles, the device having a tubular housing with an explosive charge or a gas generator installed inside, connected with a system activating a drive of belt cutting, furnished with a cutting knife and a gap for the knife or a blade and a gap for the seatbelt being cut to be placed in it, wherein
- an extended cylindrical mandrel (7a) is situated following the gas generator (4) in a cutting segment (7), and the extended cylindrical mandrel (7a) constitutes an extension of this cutting segment (7) in the direction of the chamber (3), tight-sealed relative to a work chamber (8) in a guiding chamber (5), and a cutting edge (21) of the blade (9) is one of the sides of a triangle connected with a body of the blade (9) embedded in the cutting segment (7) wherein
- a sealing ring (15) is placed on the cylindrical mandrel (7a) of the cutting segment (7) in its end part from the side of the gas generator (4) and moves along with it in the work direction of the cutting segment (7) and the length (L) of the cutting segment (7) is greater than the length (L1) of the work chamber (8).
A belt cutter for emergency automatic cutting of seatbelts in vehicles, comprising
- an elongated housing (1);
- a pressure generator (4) disposed in the elongated housing;
- an activating system connected to the pressure generator (4);
- a blade (9) having a cutting edge (21) fixed in a mandrel (7a) of a cutting segment (7) and movable along a blade slot (19) in the elongated housing (1);
- a pusher (6) placed between the pressure generator (4) and the cutting segment (7), and a belt gap (18) disposed in the elongated housing (1);
- a central axis common to the elongated housing (1), the pusher (6) and the mandrel (7a) of the cutting segment (7) and disposed parallel to a plane of the blade slot (19), and to a plane of the belt gap (18), and
- wherein that the blade slot (19) and the belt gap (18) intersect along a cutting line.
A belt cutter for emergency automatic cutting off the seatbelts in vehicles, comprising an elongate housing (1) with a pressure generator (4) connected to an activating system, a blade (9) with a cutting edge (21) fixed in a mandrel (7a) of a cutting segment (7) and movable along a blade slot (19) in the elongate housing (1), a pusher (6) placed between the pressure generator (4) and the cutting segment (7), and a belt slot (18) in the elongate housing (1), characterized in that a central axis common to the elongate housing (1), the pusher (6) and the mandrel (7a) of the cutting segment (7) is parallel to a plane of the blade slot (19), and to a plane of the belt slot (18), and in that the blade slot (19) and the belt slot (18) intersect along a cutting line.
Dependencies are inferred from the claim text.