Heartbeat rate indicator
US4513753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1982 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Nov 4, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0245
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heartbeat rate indicator has a detection electrode on the surface of the housing such as a wristwatch case and the element of a circuit-input portion in which the existence of a switch connected to the detection electrode prevents the element from destroying with electrostatic charge produced at the moment of touching the detection electrode with the human body, the clothes or the like. Because in the non-depression state of the detection electrode, the detection electrode is connected elastically through the switch to one terminal of a power source so that the electrostatic charge produced at the moment of touching the detection electrode with the human body discharges to the one terminal of the power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.