Attachment device for mounting face-protective shields on headgear
US4464800A · kind A · utility
Inventor
Key dates
| Filing date | Aug 20, 1982 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | Aug 20, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an attachment device for use in pairs to mount a face-protective shield, such as a welding helmet, for lifting and lowering pivotal movement on a headgear, the provision of two separate pieces adapted for interfitted engagement relative to each other at longitudinally adjusted positions determined by the requirements of the particular make of headgear and face shield concerned. One of the pieces has a tubular boss projecting therefrom, while the other piece has an elongate slot through which the boss extends. Interengaging means, such as respective series of saw-like teeth, are provided on confronting faces of the two pieces, whereby the positions of the two pieces relative to each other can be adjusted to place the boss as may be required by the position of a boss-receiving opening in a side wall of a particular make of face-protective shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.