Chain – staple – and horseshoe making – Chains – Elastic
Patent
1991-12-30
1993-06-22
Jones, David
Chain, staple, and horseshoe making
Chains
Elastic
59 351, A44C 504
Patent
active
052207803
ABSTRACT:
An expansion band is provided with a row of metallic bottom links underlying a row of metallic top links. The top links are offset with respect to the bottom links in the direction of the band length, with metallic top shells mounted on the top links. Metallic spring biased connecting elements mechanically couple the top and bottom links in a manner permitting resilient longitudinal adjustment of the band between a contracted state at which the top shells are in mutual abutting relationship to thereby cover the underlying upper surfaces of the bottom links, and an extended state at which the top shells are spaced on from the other to thereby expose the upper surfaces of the bottom links. Only the top shells having a base coating of black oxide, and only the to shells having a base coating of black oxide, and only the exposed exterior surfaces of the thus coated top shells and the upper surfaces of the bottom links have a polymeric coating. Preferably, the black oxide coating is produced by immersing the top shells in a heated molten bath containing an oxidizing agent. The polymeric coating is preferably a polyurethane paint which may have a dye image subsequently applied thereto.
REFERENCES:
patent: 2826900 (1958-03-01), Augenstein
patent: 3007301 (1961-11-01), Sand
patent: 3625001 (1971-12-01), Levinger
patent: 4723406 (1988-02-01), Ripley
"Tool Engineers Handbook", 1949, pp. 1237-1238.
Jones David
Textron Inc.
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