US5085593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elasticity-enhanced contact element of electrical connector
Assignee: Individual
•
Filing: 1991-01-14
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Granted: 1992-02-04
•
Expires: 2011-01-14
Abstract
Abstract A contact element of an electrical connector includes two spring contact members bifurcated from an intermediate pivot portion which is secured to a basic pivot portion by a pendulum arm member, in which an inner spring contact member is formed with a plurality of deflective spring bow portions interpolatively wound within a contour of an outer spring contact member which is formed with a plurality of deflective spring bow portions extrapolatively disposed around the inner spring contact member to prolong a force arm of each spring contact member to increase an elastic clamping force of the contact element in order for firmly clamping a printed circuit board between the two spring contact members for an efficient electrical connection of the printed circuit board.
Inventors
- 👤 Kenny Tuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:24
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/70; H01R12/82; H01R12/83
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
327 words
In an electrical connector comprising a connector base having an elongate socket longitudinally formed in the connector base, a plurality of slots transversely formed in said elongate socket for receiving a plurality of contact elements therein, a daughter printed circuit board inserted through the socket to be clamped by the plurality of the contact elements for connecting the daughter board to a mother board secured to the connector base; each said contact element including: a base portion having a supporting leg member protruding downwardly from said base portion to be fixed in the mother board; an embedding portion formed on a first side of said base portion engaged with the slot formd in said connector base; and a clamping portion formed on a second side of said base portion opposite to said embedding portion for clamping said daughter board; the improvement which comprises: said clamping portion of said contact element including: a pendulum arm member secured to a basic pivot portion formed on said base portion; and intermediate pivot portion secured to an extended end portion of said pendulum arm member opposite to said basic pivot portion; a first spring contact member bifurcated inwardly from said intermediate pivot portion and interpolatively wound to form a plurality of inner deflective spring bow portions arcuately bent along a first winding path of said first spring contact member, and formed with a first contact protrusion on an upper end portion of said first spring contact member; and a second spring contact member bifurcated outwardly from the intermediate pivot portion and extrapolatively wound to form a plurality of outer deflective spring bow portions arcuately bent along a second winding path of said second spring contact member to generally surround said first spring contact member within the socket in said connector base, and formed with a second contact protrusion on an upper end portion of said second spring contact member oppositely facing said first contact protrusion for clamping the daughter board therebetween.
Claim 2
Dependent Claim
327 words
In an electrical connector comprising a connector base having an elongate socket longitudinally formed in the connector base, a plurality of slots transversely formed in said elongate socket for receiving a plurality of contact elements therein, a daughter printed circuit board inserted through the socket to be clamped by the plurality of the contact elements for connecting the daughter board to a mother board secured to the connector base; each said contact element including: a base portion having a supporting leg member protruding downwardly from said base portion to be fixed in the mother board; an embedding portion formed on a first side of said base portion engaged with the slot formd in said connector base; and a clamping portion formed on a second side of said base portion opposite to said embedding portion for clamping said daughter board; the improvement which comprises: said clamping portion of said contact element including: a pendulum arm member secured to a basic pivot portion formed on said base portion; and intermediate pivot portion secured to an extended end portion of said pendulum arm member opposite to said basic pivot portion; a first spring contact member bifurcated inwardly from said intermediate pivot portion and interpolatively wound to form a plurality of inner deflective spring bow portions arcuately bent along a first winding path of said first spring contact member, and formed with a first contact protrusion on an upper end portion of said first spring contact member; and a second spring contact member bifurcated outwardly from the intermediate pivot portion and extrapolatively wound to form a plurality of outer deflective spring bow portions arcuately bent along a second winding path of said second spring contact member to generally surround said first spring contact member within the socket in said connector base, and formed with a second contact protrusion on an upper end portion of said second spring contact member oppositely facing said first contact protrusion for clamping the daughter board therebetween.
Claim 3
Dependent Claim
325 words
In an electrical connector comprising a connector base having an elongate socket longitudinally formed in the connector base, a plurality of slots transversely formd in said elongate socket for receiving a plurality of contact elements therein, a daughter printed circuit board inserted through the socket to be clamped by the plurality of the contact elements for connecting the daughter board to a mother board secured to the connector base; each said contact element including: a base portion having a supporting leg member protruding downwardly from said base portion to be fixed in the mother board; an embedding portion formed on a first side of said base portion engaged with the slot formd in said connector base; and a clamping portion formed on a second side of said base portion opposite to said embedding portion for clamping said daughter board; the improvement which comprises: said clamping portion of said contact element including: a pendulum arm member secured to a basic pivot portion formed on said base portion; an intermediate pivot portion secured to an extended end portion of said pendulum arm member opposite to said basic pivot portion; a first spring contact member bifurcated inwardly from said intermediate pivot portion and interpolatively wound to form a plurality of inner deflective spring bow portions arcuately bent along a first winding path of said first spring contact member, and formed with a first contact protrusion on an upper end portion of said first spring contact member; and a second spring contact member bifurcated outwardly from the intermediate pivot portion and extrapolatively wound to form an outer deflective spring bow portion arcuately bent along a second winding path of said second spring contact member to generally surround said first spring contact member within the socket in said connector base, and formed with a second contact protrusion on an upper end portion of said second spring contact member oppositely facing said first contact protrusion for clamping the daughter board therebetween.
Claim 4
Dependent Claim
325 words
In an electrical connector comprising a connector base having an elongate socket longitudinally formed in the connector base, a plurality of slots transversely formd in said elongate socket for receiving a plurality of contact elements therein, a daughter printed circuit board inserted through the socket to be clamped by the plurality of the contact elements for connecting the daughter board to a mother board secured to the connector base; each said contact element including: a base portion having a supporting leg member protruding downwardly from said base portion to be fixed in the mother board; an embedding portion formed on a first side of said base portion engaged with the slot formd in said connector base; and a clamping portion formed on a second side of said base portion opposite to said embedding portion for clamping said daughter board; the improvement which comprises: said clamping portion of said contact element including: a pendulum arm member secured to a basic pivot portion formed on said base portion; an intermediate pivot portion secured to an extended end portion of said pendulum arm member opposite to said basic pivot portion; a first spring contact member bifurcated inwardly from said intermediate pivot portion and interpolatively wound to form a plurality of inner deflective spring bow portions arcuately bent along a first winding path of said first spring contact member, and formed with a first contact protrusion on an upper end portion of said first spring contact member; and a second spring contact member bifurcated outwardly from the intermediate pivot portion and extrapolatively wound to form an outer deflective spring bow portion arcuately bent along a second winding path of said second spring contact member to generally surround said first spring contact member within the socket in said connector base, and formed with a second contact protrusion on an upper end portion of said second spring contact member oppositely facing said first contact protrusion for clamping the daughter board therebetween.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |