The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1976
Filed:
Feb. 03, 1975
Canadian Patents and Development Limited, Ottawa, CA;
Abstract
Composite metal articles of high density are made from iron and lead or a lead-rich alloy in proportions suitably of about 25 to about 90 wt. % iron, when present up to about 5 wt. % of a lead alloy-forming element aiding wetting of the iron, and the balance substantially all lead. Preferably copper, zinc, tin, indium or mixtures thereof are present to aid wetting the iron phase. Composite bird shot, for instance, is prepared e.g. by matrix formation and infiltration, or by agglomeration techniques, or by other techniques, with, if desired, a final mechanical shaping or compaction. The presence of iron has been found to cause a significant reduction in toxicity to birds on ingestion.