Adjustable safety spectacle
US4544245A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1979 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Jul 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An adjustable safety spectacle including a frame member including a nose bridge and lens supporting sections extending from the nose bridge and with the lens supporting sections including outwardly extending arm portions, a pair of adjustable length temple members including telescoping side arms, individual means coupled to the outwardly extending arm portions of the frame member and the temple members for individually pivotably mounting the temple members to extend from the outwardly extending arm portions, each temple member formed with an interior channel having a slot on a bottom wall and with substantially closed top and side walls and including an interior projection into the channel and with each side arm including a ratchet portion engaging the interior projection for providing a plurality of fixed telescoping positions and each individual means including a pair of pin members and a pair of openings for receiving the pin members and with one opening receiving one pin member for pivotable movement and with the other opening elongated and with a plurality of fixed positions and with the other opening receiving the other pin member for sliding movement to any one of the fixed …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.