Method and apparatus for making a double helix thermostat metal spring
US4920624A · kind A · utility
0Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Dec 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F3/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to a method and apparatus for fabricating a double helix coil comprising the steps of and apparatus for coiling a wire into a first helix, removably securing one end portion of the first helix to an arbor, coiling the first helix about the arbor to form a coil having a second helix, detaching the one end portion of the coil from the arbor and removing the double helix coil from the arbor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.