F - Mech Eng,Light,Heat,Weapons – 16 – G
Patent
F - Mech Eng,Light,Heat,Weapons
16
G
F16G 13/02 (2006.01)
Patent
CA 2052612
The invention relates to chain structure comprising several form pieces (1) and a wheel arrangement comprising at least one drive wheel (7) for transferring the chain, which is formed of said form pieces (1). The bearing surface (1B) of each form piece (1) consists of at least one transverse opening (2) which is arranged to be situated near one of the articulations (4, 5), which opening consists of the contact edge, the bottom and the back edge. When the chain is in mesh said openings (2) of the chain co-operate with the transverse joint pins (9) belonging to said drive wheels (7). The free length of the joint pins (9) essentially correspond to the width of the form pieces (1), whereupon the contact area formed during the contact situation in said mesh of said pins (9) and the openings (2) essentially corresponds in length to the width of the form pieces (1). After said contact situation said pin (9) leaves the opening (2) of the chain from that end thereof which is on the side of the trailing edge. In said contact situation and seen from a direction perpendicular to the largest axial cross- sectional area of pin (9), the free area of said opening (2) is essentially larger than the cross-sectional area of the correspond- ing pin (9), whereupon said contact area is formed on that part of the contact edge of the opening (2) on the bearing surface (1B) which joins said bottom. Furthermore, the largest distance of said contact edge from the centre line (K), which goes through the centres of the holes at the ends of the form piece (1), is essen- tially larger than the corresponding distance of said trailing edge from said centre line (K).
Borden Ladner Gervais Llp
Ketjumyynti Tuomikoski Ky
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