Spindle clamp for removable disks
US4755981A · kind A · utility
Inventor
Key dates
| Filing date | Jan 27, 1987 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Jan 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/1058
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spindle clamp for supporting a disk for rotation about an axis, the disk having a central aperture, in which fluid pressure actuates release of the disk and split jaws clamp the disk in the absence of fluid pressure. The clamp includes a hub which is rotatable about a central axis, an annular jaw split into a plurality of jaw pieces and disposed in a trough defined in the hub. A cap is spring biased downward against the jaw pieces. A central cone located radially inward from the trough defines a wedge surface. O-ring springs bias the jaw pieces inward into engagement with the wedge surface. Fluid pressure applied through passageways in the hub against a diaphragm causes the diaphragm to bulge upward against the jaw pieces, releasing the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.