Threaded – headed fastener – or washer making: process and apparat – Implement – e.g. – die – etc. – Tap
Reexamination Certificate
2006-09-26
2006-09-26
Tolan, Ed (Department: 3725)
Threaded, headed fastener, or washer making: process and apparat
Implement, e.g., die, etc.
Tap
C470S204000
Reexamination Certificate
active
07112143
ABSTRACT:
Cold thread forming tap or screw tap with a shaft, said shaft having a chuck portion at the one end and a forming or cutting profile portion on the other end, the forming or cutting profile portion being realised as a separate profile element and being fixable centrically and secured against rotation on the shaft by means of a fixing device, characterised in that the profile element has a small axial length and on the outside a lead-in or starting tap cone, respectively, that juts and/or indentations are formed at the end of the shaft and on that side of the profile element facing the shaft, which interlock in a positively fitting manner, that an automatic centring of the profile element takes place on the shaft when the profile element is put onto the shaft.
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Fette GmbH
Tolan Ed
Vidas Arrett & Steinkraus
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