Back to results
US 6,599,276 B1Granted
Detectable stainless steel needles for meat packing
AssigneeProcess Detectable Needles, Inc.
InventorGrant S. Humphrey
Life of this patent
Estimating the term…
Abstract
Magnetic stainless steel needles are detectable in processed meat. The previous non magnetic versions, made of 304 stainless steel, aren't. Disposable hypodermic needles made from martensitic and ferritic stainless steel are easily detectable at the smallest size. Needles are conveniently made from 420 martensitic stainless steel or 430 ferritic stainless steel.
Claims6
A system for detecting hypodermic cannulae or portions thereof embedded within meat, comprising;
- a metal detector for detecting the presence of metal embedded in a meat sample;
- and
- a hypodermic cannula selected from magnetic stainless steel metals consisting of martensitic, ferritic, or mixtures thereof, said metals prepared by a plurality of cold drawings and in a size gauge of between 14 and 20.
A hypodermic needle cannula or portion thereof having high detectability in a meat sample, comprising:
- a metal selected from magnetic stainless steel metals consisting of martensitic, ferritic, or mixtures thereof, said metals prepared, in a preparation step by a plurality of cold drawings and in a size gauge of between 14 and 20, whereby detectability of said needle cannula or portion thereof prepared according to said preparation step is greater than those prepared in the absence of said preparation step.
Dependencies are inferred from the claim text.