Electrical soldering device with a split cylinder transformer secondary
US5477027A · kind A · utility
Inventors
Key dates
| Filing date | Dec 14, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Dec 14, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K3/0315
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electrical soldering device in the form of a soldering gun has a transformer disposed in a housing with a primary winding and a secondary winding. The transformer is supplied from an A.C. source, such as a voltage mains. The soldering tip is in the form of a resistance wire bent into a loop and connected to the secondary winding of said transformer. The secondary winding of the transformer is formed of a cylindrical sleeve of metallic material, preferably copper, surrounding the coil of the primary winding. The cylindrical sleeve has a continuous slit formed therein extending approximately parallel to its cylinder axis. The slit defines mutually opposite edge regions to which the resistance wire is connected. A frequency converter connected in the current supply line to the transformer increases the frequency, preferably into the kilohertz range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.