This is the most reliable system for insuring a secure attachment between the band to the tube.
1) Traditional system
2) P.E.I. SURE-SPRING® system
This illustration clearly highlights the different behavior of the spring mechanisms during operation:
In Mechanism 2 (SURE-SPRING® system) the springs are attached to a special moving cap, which slides lengthwise while winding and unwinding, keeping the spring coils packed and concentric at all times.
This spring configuration avoids most of the wear mentioned above, allowing better performance and a much longer operating life-span for the spring mechanism.
The SURE-SPRING HP winding mechanism is the answer to the elevated power required to wind up large size protectivecovers.
An optimal dimensioning of the springs guarantees the tensile force required for moving "J"-series apron covers.
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P. E. I. s.r.l. - società unipersonale del Gruppo PEI Italia s.r.l. Via Torretta 32 - 32/2 - 34 - 36 40012 - Calderara di Reno - BOLOGNA
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