Document ID: chunk:federal_register_of_legislation:F2006C00783:body:0:p11
Version: federal_register_of_legislation:F2006C00783
Segment Type: other
Provision Reference: 
Character Range: 30402–33403

then such angle of separation in the test may be any angle greater than 25o, and the angle of separation of the centrelines of the 'Straps' when viewed in the plane of one `Strap' may be any angle less than 10o.
4.5.2.                              In the case of a 'Lap-Sash Belt' incorporating an 'Emergency Locking Retractor' where, during the wearing and retracting operations, there is relative movement between the retracting 'Strap' and the 'Sash Guide' system other than the retractor itself the tensile strength of the webbing shall not be reduced to less than 14.7 kN or 75% of the 'Dry Breaking Strength', whichever is the greater, after the retracting 'Strap' has been drawn through the 'Sash Guide' system for 50,000 cycles under the following an conditions:
4.5.2.1.                        the tensile load in all parts of the test `Strap' during the working stroke of the 2 strokes of each cycle shall not be less than 18 N;
4.5.2.2.                        the tensile load in the test 'Strap' at one point in the cycle shall be reduced to zero;
4.5.2.3.                        the working stoke shall be not less than 200 mm;
4.5.2.4.                        the orientation of the test 'Strap' relative to the `Sash Guide' shall be such that:
4.5.2.4.1.                  the 'Sash Guide' shall be in its design configuration except that, for 'Sash Guides' designed to pivot, the angle of the axis of rotation may vary from its design configuration provided that such variation is not greater than 5o
4.5.2.4.2.                  the part of the test 'Strap' which simulates the 'Strap' passing from the 'Sash Guide' to the next 'Sash Guide' or to the retractor, shall be in the design configuration; and
4.5.2.4.3.                  the part of the test 'Strap' which simulates the torso 'Strap' shall be pulled in a vertical plane not more than 45o or a longitudinal plane when viewed in plan, and the direction of pull in that plane shall vary over a range of not les than 65o during the working stroke of each cycle;
         and
4.5.2.5.                        all 'Sash Guides'  for the one assembly shall be tested simultaneously.
4.5.2.6.                        The requirements of this Clause shall not apply to relative movement between the 'Strap' and the retractor, at the retractor.
4.5.3.                              Buckle-Spring Fatigue Resistance
         In the case where a spring is incorporated in the unlatching mechanism of a buckle, the load required to operate the spring shall not be reduced by more than 20% after the spring has been subjected to 50,000 operations each involving a movement not less than 95% of the design movement for buckle unlatching.
4.6.                                    RETRACTORS
4.6.1.                              All retractors incorporated in 'Seat Belt Assemblies' shall comply with the requirements of Clause 4.6.2 and either Clause 4.6.3 or 4.6.4.
4.6.2.                              General Requirements for Retractors
4.6.2.1.