Foldable spectacle frame
US5231429A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C5/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A foldable spectacle frame having temples which are foldable to a thin form in the same plane as its lens frames without lapping over the lens frames. Each of the temples comprises an auxiliary temple member having a length corresponding to the vertical width of the lens frame and supported by an outer portion of upper side of the lens frame pivotally movably in a plane substantially orthogonal to the plane of the lens frame, and a main temple member pivoted to the auxiliary temple member rotatably in a plane orthogonal to the plane of pivotal movement of the auxiliary temple member. The spectacle frame further comprises a slide member slidably provided on the auxiliary temple member and having a length permitting a base end thereof to project from the auxiliary member, means for moving the slide member away from the lens frame when the main member is folded, and means for engaging the slide member with the lens frame by cooperation of the slide member and the lens frame. The slide member engages with the lens frame when the main member is brought into an unfolded state and disengages from the lens frame when the main member is folded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.