Document ID: chunk:federal_register_of_legislation:F2006L02679:body:0:p21
Version: federal_register_of_legislation:F2006L02679
Segment Type: other
Provision Reference: 
Character Range: 59490–61211

prescribed in paragraph 7.7.  The strap tension must be measured at the point of contact with (but just clear of) the dummy while the strap is being retracted at the approximate rate of 0.6 metres per minute.

Annex 3

DIAGRAM OF AN APPARATUS TO TEST DURABILITY OF RETRACTOR MECHANISM

Annex 4

DIAGRAM OF AN APPARATUS TO TEST LOCKING OF EMERGENCY
LOCKING 'TYPE 4N RETRACTORS'

A suitable apparatus is illustrated in the figure and consists of a motor-driven cam, the follower of which is attached by wires to a small trolley mounted on a track. The cam design and motor speed combination is such as to give the required acceleration at a rate of increase of acceleration as specified in paragraph 7.6.2.2 of this Regulation Annex and the stroke is arranged to be in excess of the maximum permitted webbing movement before locking.

On the trolley a carrier is mounted which can be swivelled to enable the retractor to be mounted in varying positions relative to the direction of movement of the trolley.

When testing retractors for sensitivity to strap movement the retractor is mounted on a suitable fixed bracket and the strap is attached to the trolley.

When carrying out the above tests any brackets, etc. supplied by the manufacturer or his accredited representative shall be incorporated in the test installation to simulate as closely as possible the intended installation in a vehicle.

Any additional brackets, etc. that may be required to simulate the installation as intended in the vehicle shall be provided by the manufacturer or his accredited representative.

Annex 5
DIAGRAM OF AN APPARATUS FOR DUST-RESISTANCE TEST

[*] The category code may also be in the format L1, LA etc.
[1]  g = 9.81 m/s2