Title: Jack

Abstract: A jack is provided in which a movable contact is driven away from a fixed contact upon insertion of a plug and returns into abutting relationship with the fixed contact upon withdrawal of the plug. The movable contact comprises an electrically conductive, rigid body which is rotatably mounted at its one end, and is biased toward the fixed contact by means of a coiled spring. When the plug is inserted, the movable contact is displaced against the resilience of the coiled spring to move away from the fixed contact, while when the plug is withdrawn, the resilience of the coiled spring urges the movable contact into abutting relationship with the fixed contact.

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Inventors: Ojima, Shin (Yao, JA)
Ohgami, Kazuhiko (Yao, JA)
Nakaba, Kanbun (Yao, JA)

Application Number: 498019
Filing Date: 1974-08-16
Publication_date: 1976-04-06
Assignee: Hoshidenki-Seizo Kabushiki Kaisha (Yao, JA)
Primary Class(es): 200/51.1
Other Classes:
US Patent Ref:

1668583	May, 1928	Carter	339/183.
2368914	Feb, 1945	Bowen	200/51.
2740857	Apr, 1956	Porland	200/67.
2977436	Mar, 1961	Haydon	200/67.
3222473	Dec, 1965	Delhase	200/153.
3418438	Dec, 1968	Barrett	200/51.
3536870	Oct, 1970	Izumi	200/51.

Other Refs:
Primary Examiner: Smith, Jr., David
Assistant Examiner:
Attorney: Pollock; Elliott I.