Jam detector
US4258250A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1978 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K13/067
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system for use in detecting jams in a series of members of defined length which are moving along a predetermined path includes a pulse generator for providing sequential pulses, each representative of a unit of length. A counter having a preset number therein representative of the defined length of a member plus an additional fixed length substantially less than that of a member receives an input from the pulse generator and from a sensor positioned adjacent the path of movement. During the period that a member is sensed, the preset count in the counter is reduced by the pulse generating means and if that count is reduced to zero, a jam condition is indicated and means are provided to stop movement of the members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.