Dial-down mechanism for wind-up pen
USRE46363E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Nov 27, 2033 |
Classification
- Technology area (CPC —)General
Abstract
The present invention relates to a dial-down mechanism for an injection device comprising a torsion spring for assisting injection of a dose of medicament from the injection device, the dial-down mechanism comprising dial-up cam arranged to receive and engage with a dial-up key, wherein the dial-up cam and the dial-up key are adapted to, upon rotation of a dose setting member in a first direction, cooperate to strain the torsion spring of the injection device, and a dial-down cam arranged to receive and engage with a dial-down key, wherein the dial-down cam and the dial-down key are adapted to, upon rotation of the dose setting member in a second direction, cooperate to release the torsion spring of the injection device, the second rotation direction being opposite to the first rotation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.