Telescoping spring probe

Details Telescoping spring probe Telescoping spring probe

1995-11-16

1997-06-24

Abrams, Neil

Electrical connectors

Metallic connector or contact having movable or resilient...

Spring actuated or resilient securing part

439700, 324761, 324 725, H01R 1324

Patent

active

056413157

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 continuous electrical conductivity between the plunger and barrel during axial travel of the plunger in the barrel.

REFERENCES:
patent: 4591222 (1986-05-01), Shaffer
patent: 5151040 (1992-09-01), Tanaka
patent: 5328391 (1994-07-01), Soshi et al.
patent: 5509813 (1996-04-01), Lu

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