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:
Jun. 02, 1998
Filed:
Jan. 25, 1996
Herbert Gunther, Allendorf, DE;
Gunther Heisskanaltechnik GmbH, Frankenberg, DE;
Abstract
A hot runner (10) with an externally heated material pipe (16) and die tip (26) comprises a pre-mounted heating unit (20) with a sealing body (24) which supports a pipe (40) for a heat sensor (34) in a circumferential segment (46). The sealing body (24) made in particular of brass encloses concentrically an insulated heating coil (23) in a steel pipe (22) which is mechanically protected by a partly sleeve-shaped retaining element (42). For example the sensor pipe (40) is supported in the sealing body (24) and is positively and/or adhesively retained between the edges of peripheral ends of a perforated sheet (42). The steel pipe 22) has a lateral recess (44) for inserting the connection points (36) of the heat sensor (34). The material pipe (16) is insertable into the heating device (20) and is able to conduct heat with the close positioning of its shaft (17) against the inner wall (25).