Injection molding nozzle heater clamp
US5558888A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Jun 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/245
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A clamp for clamping heater assemblies onto cylindrical bodies such as injection molding nozzles that require heating. The clamp includes a mandrel that slips over the nozzle, and has a heater wound on the exterior. The mandrel has a longitudinal slit that will permit the bore of the mandrel to be reduced in size when a lateral width of the slit is reduced. The mandrel carries outwardly facing cam surfaces, and an overlying sleeve has inwardly facing cam surfaces which mate, and upon relative longitudinal movement, the cam surfaces cause the lateral width of the slit to reduce and clamp the mandrel onto the nozzle. The clamping can be effected by differential movement due to differences in thermal expansion of the mandrel and the sleeve, or by mechanical movement of the sleeve relative to the mandrel to obtain the cam action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.