Personal paging receiver with swivel clip and distributed antenna
US3956701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Sep 18, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S224/93
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A personal paging device is housed in a case which has one dimension (length) longer than its width or thickness, and a clip is affixed to a side on a swivel between the ends of the length dimension, which allows the device to be worn on the person in a vertical or a horizontal posture. A radio receiving antenna is carried on a flexible dielectric sheet within the casing, and radio components are enclosed within that sheet. A pair of orthogonally-related antenna loops can be provided on the dielectric sheet. The swivel clip can be arranged to cooperate with these or other antennas in a circular-polarization antenna system, such that in one orientation one or the other of the antennas will be detuned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.