Spindle adaptors
US4195848A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Jan 11, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spindle adaptor for use with an umbrella center spindle record player said adaptor comprising a spindle adapted, at its lower end, to be received in the normal smaller diameter spindle receiving means of the record player and carrying at its upper end a body member having a record supporting means movable between an extended position to support a stack of large center hole records and a retracted position allowing the lowermost, or the last, record of the stack to descend along the body and a record retaining means movable between an extended position temporarily to support the remainder of the stack of the large center hole records when the support means is in its retracted position and a retracted position to permit free passage of said records along the body and a control member within the spindle and movable to cause movement of the record retaining means and the record supporting means between said extended and retracted positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.