Telescoping spring probe
US5641315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Nov 16, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R11/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Telescoping spring probes include a barrel having a hollow cylindrical body with a passageway extending from a closed barrel end to an open barrel end. The open barrel end is crimped radially inward into the passageway. A plunger axially disposed within the barrel passageway comprises a hollow body having an internal cavity extending from an open plunger end to a closed plunger end. The open plunger end disposed within the barrel passageway faces the closed barrel end. The plunger body has an outside surface portion with a diameter greater than the crimped barrel open end to prevent the plunger from exiting the barrel. A spring is disposed axially within the barrel passageway and the plunger cavity. In a first embodiment, the plunger body includes an inwardly deflected detent contacting one end of the spring to imposes a spring force which biases the plunger body against the barrel passageway. In third and fourth embodiments, the closed plunger end has an angled or beveled profile that contacts one end of the spring to impose a force onto the spring biasing the plunger body against the barrel passageway. This biased spring action produces continuous mechanical contact and resulting…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.