Disc record player having shutoff switch actuating apparatus
US4435799A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | May 3, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/049
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The player has a record handling mechanism which consists of a sequencing cam for coordinating the operations of a record lifting finger and a set of record receiving pads. To transfer a record from the record receiving pads to a turntable for playback, the record lifting finger is raised through a slot in the turntable to lift the record to a position above the receiving pads, the receiving pads are retracted out of the way, and then the record lifting finger is withdrawn to a location beneath the turntable to deposit the record on the turntable. To transfer the record back to the record receiving pads for retrieval, the sequence of operations is basically reversed. It is desirable to hold the registration between the turntable slot and the record lifting finger when the player is turned off. To this end a shutoff switch actuating mechanism is provided. When the player is turned off, the sequencing cam is driven in a direction that raises the record lifting finger through the turntable slot. The sequencing cam has a rib which engages and deflects a pivotally-mounted shutoff switch actuating lever to operate a shutoff switch to turn off a motor driving the sequencing cam. The locat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.