SE7415765L - - Google Patents
Info
- Publication number
- SE7415765L SE7415765L SE7415765A SE7415765A SE7415765L SE 7415765 L SE7415765 L SE 7415765L SE 7415765 A SE7415765 A SE 7415765A SE 7415765 A SE7415765 A SE 7415765A SE 7415765 L SE7415765 L SE 7415765L
- Authority
- SE
- Sweden
- Prior art keywords
- piston
- belt
- ring
- cylinder
- gas
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R22/1955—Linear actuators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
- Fluid-Damping Devices (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
1438621 Tightening seat belts SOC NATIONALE DES POUDRES ET EXPLOSIFS 18 Dec 1974 [20 Dec 1973] 54642/74 Heading A3V [Also in Division F2] A seat belt is tightened by a piston moved within a cylinder by release of high pressure gas triggered by an impact detector. At a predetermined pressure a frangible link holding an auxiliary piston fractures and activates a jamming mechanism preventing further advance of the piston. Forward movement of the wearer is damped as gas is compressed by return of the piston. The belt is attached to a rod 2 fixed to piston 6 movable within a cylinder 7. The cylinder is held in casing 30 by a frangible ring 9. Ignitable pyrotechnic charges 27 are. housed in a damping chamber 11, which communicates via ports 13 with expansion chamber 12. A residual damping chamber 19 communicating via small ports 31 is provided in the casing; alternatively a venting valve is provided. An auxiliary piston is housed in piston 6, and is in communication with the expansion chamber via passageways 20. In the embodiment shown the auxiliary piston 17 carries a disc 33 which retains balls 34. It is held by a frangible ring 16. In a modification (Figure 5, not shown) the auxiliary piston (39) is annular. In the embodiment of Figure 6 (not shown) has a central weakened link (41) and a conical head (42) contacting radial rods (43). The rods act against a ring retaining the balls. When the charges are ignited, piston 6 is driven to the right, tightening the belt when the force of the wearer thrown against the belt resists piston advance, the gas pressure rises until the retaining ring or link of the auxiliary piston fractures. Further movement of the piston in that direction is prevented by the jamming action of the balls. Continued forward movement of the wearer against the belt withdraws the piston to its initial position. Fracture of ring 9 releases the cylinder 7 so that damping is continued as gas is compressed in chamber 23.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7345840A FR2255784A5 (en) | 1973-12-20 | 1973-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7415765L true SE7415765L (en) | 1975-06-23 |
Family
ID=9129556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7415765A SE7415765L (en) | 1973-12-20 | 1974-12-16 |
Country Status (13)
Country | Link |
---|---|
BE (1) | BE823697A (en) |
CA (1) | CA1011123A (en) |
CH (1) | CH584041A5 (en) |
DE (1) | DE2460572A1 (en) |
DK (1) | DK659074A (en) |
ES (1) | ES433087A1 (en) |
FR (1) | FR2255784A5 (en) |
GB (1) | GB1438621A (en) |
IE (1) | IE40276B1 (en) |
IT (1) | IT1027085B (en) |
LU (1) | LU71516A1 (en) |
NL (1) | NL7416490A (en) |
SE (1) | SE7415765L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9601075D0 (en) * | 1996-01-19 | 1996-03-20 | Alliedsignal Ltd | Pretensioner |
-
1973
- 1973-12-20 FR FR7345840A patent/FR2255784A5/fr not_active Expired
-
1974
- 1974-12-02 IE IE248174A patent/IE40276B1/en unknown
- 1974-12-09 CA CA215,541A patent/CA1011123A/en not_active Expired
- 1974-12-12 CH CH1653974A patent/CH584041A5/xx not_active IP Right Cessation
- 1974-12-16 SE SE7415765A patent/SE7415765L/ not_active Application Discontinuation
- 1974-12-16 IT IT7064474A patent/IT1027085B/en active
- 1974-12-18 GB GB5464274A patent/GB1438621A/en not_active Expired
- 1974-12-18 DK DK659074A patent/DK659074A/da unknown
- 1974-12-18 NL NL7416490A patent/NL7416490A/en not_active Application Discontinuation
- 1974-12-18 LU LU71516A patent/LU71516A1/xx unknown
- 1974-12-19 ES ES433087A patent/ES433087A1/en not_active Expired
- 1974-12-20 BE BE151801A patent/BE823697A/en unknown
- 1974-12-20 DE DE19742460572 patent/DE2460572A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB1438621A (en) | 1976-06-09 |
DK659074A (en) | 1975-09-08 |
DE2460572A1 (en) | 1975-07-10 |
FR2255784A5 (en) | 1975-07-18 |
ES433087A1 (en) | 1976-11-16 |
CA1011123A (en) | 1977-05-31 |
IE40276L (en) | 1975-06-20 |
LU71516A1 (en) | 1976-11-11 |
CH584041A5 (en) | 1977-01-31 |
IE40276B1 (en) | 1979-04-25 |
NL7416490A (en) | 1975-06-24 |
IT1027085B (en) | 1978-11-20 |
BE823697A (en) | 1975-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 7415765-2 |