B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 5/14 (2006.01) B21D 53/00 (2006.01) B25D 1/16 (2006.01) E04H 17/10 (2006.01) E04H 17/20 (2006.01) E04H 17/26 (2006.01) F16G 11/00 (2006.01)
Patent
CA 2174086
A post and batten for fencing and other purposes which is provided with an opening in one face to facilitate locking engagement of a fastener thereto. Also described a hand post driver to cushion shock during use. A standard drive comprises a post tube, cross-bars and handles, these elements forming a rigid frame. The present invention modifies this arrangement by mounting a cap to the handles and interposing coil springs between the upper cross-bar and the cap. A solid plug is fixed in the end of post tube. There is no connection between the end of the tube adjacent the cap and the handles are free to slide in top-cross-bar. When the tube is impacted on a post the post exerts pressure on the plug and simultaneously the springs are extended cushioning the blow and then almost instantaneously the end of the tube is impacted by the cap providing supplementary downward force.
Pieu ou latte pour clôtures et autres applications, dont l'une des faces (5) est pourvue d'une ouverture (6) facilitant la solidarisation d'un élément de fixation (11). Est également décrit un enfonce-pieu manuel destiné à amortir les chocs pendant l'utilisation. Un enfonce-pieu normal comporte un tube, des traverses et des manches, ces éléments formant un châssis rigide. On a modifié cette configuration en montant un élément terminal (35) sur les manches (34), et en interposant des ressorts hélicoïdaux (36) entre la traverse supérieure (33) et l'élément terminal (35). Un bouchon solide (37) est fixé dans l'extrémité du tube (32). L'extrémité du tube (32) qui est voisine de l'élément terminal (35) n'est pas reliée à celui-ci, et les manches (34) glissent librement dans la traverse supérieure (33). Lorsque le tube (32) vient heurter un pieu, le pieu exerce une pression sur le bouchon (37) et, au même moment, les ressorts s'étirent de manière à amortir le choc. Presque instantanément, l'extrémité du tube (32) est heurtée par l'élément terminal (35) de manière à créer un effort supplémentaire dirigé vers le bas.
Innes Rodney Mitchell
Innes Stuart Martin
Joyce Kevin Patrick
Manukau Fifty Limited
Marks & Clerk
LandOfFree
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