FIELD: engines and pumps.
SUBSTANCE: vibrating-damping strap (10) is to be fitted between blower blade (6) body (12) and blower disc (2). Said strap has radially outer surface (18) provided with at least one plate (16a, 16b) in contact with blower blade body and radially inner surface (20) composed by upstream surface (22) facing the disc (2) and downstream surface (24) separated from the latter by ledge (26). Said upstream surface is located radially inward relative to downstream surface. Upstream surface (22) has zone (101) extending radially inward starting at somewhat distance from its upstream end (22a). Upstream surface (22) of radially inner surface (20) starts from recess (103) from upstream end (22a) to change over to ledge (105) radially levelled in direction of inner area wherein extending zone (101) originates.
EFFECT: decreased wear and scoring of contact surfaces.
7 cl, 5 dwg
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