US4241941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive safety seat belt system
Assignee: NSK Warner KK
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Filing: 1979-03-19
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Granted: 1980-12-30
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Expires: 1999-03-19
Abstract
Abstract A passive safety seat belt system having at least one member slidable in response to the opening-closing of a door of a vehicle is characterized by an elongated member having immovable one end lying at a suitable location on the body of the vehicle and the movable other end lying at a suitable location on the inside of the door and vice versa, and a link mechanism including lever mechanism pivotally supported on the inside of the door or the body. The lever mechanism serves to amplify and transmit the movement of the movable end of the elongated member to slide the slidable member.
Inventors
- 👤 Kazuo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:46
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
239 words
A passive safety seat belt system comprising: at least one slide member being slidable in response to opening-closing of a vehicle door to change a condition of a belt engaged therewith in order to automatically restrain and liberate an occupant of a seat; an elongated member having one end lying at a vehicle body part adjacent said door and the other end lying at a part of said door, one of said two ends being immovably attached and the other end being movable; and link mechanism for amplifying and transmitting the motion of said movable end of said elongated member including a first pivotally mounted lever, a second pivotally mounted lever, and a direction-changing arm, said first lever having a portion engaged with the movable end of said elongated member, a portion engageable with said direction-changing arm in an initial stage of the opening of said door, and a portion engageable with one end of said second lever during a stage subsequent to said initial stage of the opening of said door, and the other end of said second lever being pivotally connected to one end of said direction-changing arm, the other end of said direction-changing arm being pivotally connected to said slide member, the length between a center of pivotal rotation of said second lever and said other end of said second lever being greater than that between said center and said one end of said second lever.
Claim 2
Dependent Claim
239 words
A passive safety seat belt system comprising: at least one slide member being slidable in response to opening-closing of a vehicle door to change a condition of a belt engaged therewith in order to automatically restrain and liberate an occupant of a seat; an elongated member having one end lying at a vehicle body part adjacent said door and the other end lying at a part of said door, one of said two ends being immovably attached and the other end being movable; and link mechanism for amplifying and transmitting the motion of said movable end of said elongated member including a first pivotally mounted lever, a second pivotally mounted lever, and a direction-changing arm, said first lever having a portion engaged with the movable end of said elongated member, a portion engageable with said direction-changing arm in an initial stage of the opening of said door, and a portion engageable with one end of said second lever during a stage subsequent to said initial stage of the opening of said door, and the other end of said second lever being pivotally connected to one end of said direction-changing arm, the other end of said direction-changing arm being pivotally connected to said slide member, the length between a center of pivotal rotation of said second lever and said other end of said second lever being greater than that between said center and said one end of said second lever.
Claim 3
Dependent Claim
30 words
A seat belt system according to claim 1, wherein the movable end of said elongated member is engaged with said one end of said second lever when said door closes.
Claim 4
Dependent Claim
26 words
A seat belt system according to claim 1, wherein a center of pivotal rotation of said first lever is common to that of said second lever.
Claim 5
Dependent Claim
205 words
A passive safety seat belt system, comprising: at least one slide member being slidable in response to opening-closing of a vehicle door to change a condition of a belt engaged therewith in order to automatically restrain and liberate an occupant of a seat; a first elongated member having one end lying at a vehicle body part adjacent said door and the other end lying at a part of said door, one of said two ends being immovably attached and the other end being movable; a link mechanism including lever means pivotally supported for amplifying and transmitting a motion of said movable end of said elongated member to said slide member; and intermediate means for transmitting the motion of the movable end of said first elongated member to said lever means during the opening-closing of said door between its fully closed position and its half opened position and for stopping the transmission of the motion of said movable end to said lever means during the opening-closing of said door between its half opened position and its fully opened position, whereby said slide member may be slid over its entire stroke during the opening-closing of said door between its fully closed position and its half opened position.
Claim 6
Dependent Claim
205 words
A passive safety seat belt system, comprising: at least one slide member being slidable in response to opening-closing of a vehicle door to change a condition of a belt engaged therewith in order to automatically restrain and liberate an occupant of a seat; a first elongated member having one end lying at a vehicle body part adjacent said door and the other end lying at a part of said door, one of said two ends being immovably attached and the other end being movable; a link mechanism including lever means pivotally supported for amplifying and transmitting a motion of said movable end of said elongated member to said slide member; and intermediate means for transmitting the motion of the movable end of said first elongated member to said lever means during the opening-closing of said door between its fully closed position and its half opened position and for stopping the transmission of the motion of said movable end to said lever means during the opening-closing of said door between its half opened position and its fully opened position, whereby said slide member may be slid over its entire stroke during the opening-closing of said door between its fully closed position and its half opened position.
Claim 7
Dependent Claim
186 words
A seat belt system according to claim 4, wherein said intermediate means includes a slider formed with a first guide groove having a first portion and a second portion extending substantially in the direction of sliding movement of said slider, said movable end being secured to said slider, a guide rail for sliding said slider thereon, a second elongated member having one end fitted in said first guide groove, change-over means for holding said one end of said second elongated member in said first portion of said first guide groove when said slider is slid by said first elongated member during the opening-closing of said door between its fully closed position and its half opened position and for permitting said one end of said second elongated member to move from said first portion when said door is further opened from its half opened position so that said one end may slide in said second portion of said first guide groove when said slider is slid by said first elongated member during the opening-closing of said door between its half opened position and its fully opened position.
Claim 8
Dependent Claim
152 words
A seat belt system according to claim 5, wherein the first portion of said first guide groove is a first branch groove portion formed at an angle with respect to said second portion, and said change-over means includes said first branch groove portion, and a second guide groove formed in said guide rail, said second guide groove comprising a straight groove portion extending so as to pass through the end of said first branch groove portion and extending substantially parallel to said second portion of said first guide groove and a second branch groove portion crooked from said straight groove portion toward said second portion of said first guide groove so as to intersect said first branch groove portion when said slider is in its slid position corresponding to said half opened position of said door, said one end of said second elongated member being also fitted in said second guide groove.
Claim 9
Dependent Claim
100 words
A passive safety seat belt system for a vehicle having a body and a door, said system having a belt and being operable during opening-closing of said door, comprising: an arm movable to change the position of said belt; a member having a portion movable in response to opening-closing of said door; first lever means coupled to said member and effective to move said arm only during a first portion of the opening-closing of the door; and second lever means coupled to said member and effective to move said arm during a second portion of the opening-closing of the door.
Claim 10
Dependent Claim
100 words
A passive safety seat belt system for a vehicle having a body and a door, said system having a belt and being operable during opening-closing of said door, comprising: an arm movable to change the position of said belt; a member having a portion movable in response to opening-closing of said door; first lever means coupled to said member and effective to move said arm only during a first portion of the opening-closing of the door; and second lever means coupled to said member and effective to move said arm during a second portion of the opening-closing of the door.
Claim 11
Dependent Claim
138 words
A passive safety seat belt system for a vehicle having a body and a door, said system having a belt and being operable during opening-closing of said door, comprising: an element movable to change the position of said belt; a member having a portion movable in response to opening-closing of said door; and a mechanism for coupling said portion of said member to said element to move said element during the opening-closing of said door between its fully closed position and a partially open position and for decoupling said element from said portion of said member during the opening-closing of said door between its partially open position and its fully open position, whereby said element may be moved over an entire stroke during the opening-closing of said door between its fully closed position and its partially open position.
Claim 12
Dependent Claim
138 words
A passive safety seat belt system for a vehicle having a body and a door, said system having a belt and being operable during opening-closing of said door, comprising: an element movable to change the position of said belt; a member having a portion movable in response to opening-closing of said door; and a mechanism for coupling said portion of said member to said element to move said element during the opening-closing of said door between its fully closed position and a partially open position and for decoupling said element from said portion of said member during the opening-closing of said door between its partially open position and its fully open position, whereby said element may be moved over an entire stroke during the opening-closing of said door between its fully closed position and its partially open position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |