Fasteners and spacer rings therefor

Details Fasteners and spacer rings therefor Fasteners and spacer rings therefor

B - Operations, Transporting

25

B

B25B 29/02 (2006.01)

Patent

CA 2669306

An axially expanding spacer (10) has respective first and second spacer rings (11,12) with complementary helical ramped faces (16,17) and abutment faces (18,19). By relative rotation of the spacer rings (11,12), the height of the spacer (10), between annular faces (14,15) can be expanded or contracted. Compression springs (20) between the abutment faces (18,19) urge the spacer (10) to its "expanded" configuration.

Dispositif pouvant s'étendre axialement (10) comprenant respectivement des première et seconde bagues d'espacement (11, 12) ayant des faces hélicoïdales à échelons (16, 17) et des faces de butée (18, 19) complémentaires. Grâce à une rotation relative des bagues d'espacement (11, 12), la hauteur du dispositif d'espacement (10), entre des faces annulaires (14, 15) peut être augmentée ou réduite. Des ressorts de compression (20) entre les faces de butée (18, 19) pressent le dispositif d'espacement (10) vers sa configuration <= déployée >=.

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