1
Beller Herbert R: Seat belt retractor having inertial device activated by two stimuli. N V Klippan, Plaut Jonathan, Kirby Jr John P, November 11, 1975: US3918658 (83 worldwide citation)

A reel-type retractor for a safety belt incorporating a single inertial locking system responsive to two different stimuli for actuating a pawl to locking engagement with a ratchet wheel. A pendulum responds to a first stimulus resulting from acceleration, deceleration or roll-over of the vehicle. A ...


2
Per O Weman, Fred F Neumann: Belt load indicator. N V Klippan, Roger H Criss, July 3, 1984: US04457251 (24 worldwide citation)

Apparatus to indicate the load on a restraining device subject to tensile loading, especially for a safety belt, the restraining device having an opening for communication with a restraining element, such as a seat belt, and being formed of two parts having different tensile strengths. The parts are ...


3
Paul J Robben, Hugo R De Vuyst: Buckle with readily releasable latch. N V Klippan, Roger H Criss, January 19, 1982: US04310952 (18 worldwide citation)

A safety belt buckle including a latch for engagement with an opening in a tongue, an ejection spring for the tongue and a bias spring for a push button that can be brought into engagement with the latch, wherein the latch can pivot on an axis approximately perpendicular to the direction of insertio ...


4
Per O Weman: Device for reducing spring tension in a belt strap. N V Klippan, Roger H Criss, August 12, 1980: US04216922 (11 worldwide citation)

In a device for reducing spring tension in a belt strap, particularly in a belt retractor for safety belts in motor vehicles, comprising a winding shaft and a return spring secured in a housing, the device including means for producing a force acting against the tension of the spring, the means bein ...


5
Harald Martin Schmelow, Per Olof Weman, Heino Arff: Universal emergency locking retractor. N V Klippan, Patrick L Henry, Ernest D Buff, July 18, 1978: US04101092 (9 worldwide citation)

A seat belt retractor of the inertia type comprises a rotatable shaft with a cam-surface driven thereby. A locking element movable on the cam surface is positively displaced by a control element fitted in a recess thereof and acting from an inertia element. The locking element, when driven by the in ...


6
Per O Weman: Safety belt system. N V Klippan, Roger H Criss, Roy H Massengill, September 25, 1984: US04473242 (8 worldwide citation)

The belt system, advantageously including a retractor (13) mounted on the seat (1) and directly involving the lap belt section (8), comprises an attachment buckle (7) connected to its anchor point (10) by an expandable link device (11), which normally permits a range of movement of buckle (7) away f ...


7
Per Olof Weman: Ferrule buckle. N V Klippan, Roger H Criss, January 24, 1978: US04069559 (6 worldwide citation)

A buckle and tongue combination comprising a ferrule, channeled for acceptance of a bifurcated tongue. A latch member straddling the ferrule, and pivoted thereto, is biased for latching engagement with the tongue. The tongue may be disengaged by pressure in opposition to the bias, applied to a lever ...


8
Rudy Thomas, Fred F Neumann: Acceleration-sensitive device. N V Klippan, Roger H Criss, December 4, 1979: US04176809 (6 worldwide citation)

An acceleration-sensitive device, particularly a seat belt retractor locking device responsive to vehicle acceleration, comprising a rollable, fully movable inertia member supported in a depression provided in a support member, and an actuator means disposed above the inertia member and engageable w ...


9
Lucas Labeur: Adjustable sensor responsive to vehicle acceleration. N V Klippan, Roger H Criss, January 13, 1981: US04244537 (5 worldwide citation)

A vehicle sensitive seat belt retractor including two locking pawls acting on a single ratchet wheel and operable in response to actuation of a vehicle sensitive sensor. The pawls are positioned relative to the sensor so that the force required to lock the retractor is uniform regardless of the dire ...


10
Per O Weman: Locking device reacting to inertia forces for retractors. N V Klippan, Roger H Criss, November 8, 1983: US04413794 (3 worldwide citation)

A locking mechanism for seat belt retractors responding to movement or accelerations of a vehicle, including a freely movable inertia body and a pivotable pawl, in which a mechanism on the pawl can engage the inertia body and movement of the inertia body is limited by a means arranged next to the in ...