US3784954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for plug connection of printed circuit boards
Assignee: Inventio AG
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Filing: 1972-04-28
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Granted: 1974-01-08
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Expires: 1992-04-28
Abstract
Abstract An apparatus for establishing a plug connection at printed circuit boards wherein the circuit boards can be plug connected with a contact element secured to a support, the circuit boards sliding in guides secured to the support at their edges which are in parallelism with the direction of insertion of the circuit boards. According to the invention a respective double-arm lever having an actuation arm and an engagement arm is rotatably mounted in mirror-image fashion at the narrow sides of the fixed contact element. The engagement arm possesses a slot at its end removed from the axis of rotation for receiving a bolt secured to the circuit board and by means of the actuation arm the circuit board through the agency of the engagement arm and the bolt can be selectively inserted into and removed from the fixed contact element.
Inventors
- 👤 H Grimm
- 👤 D Zufferey
- 👤 A Messina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:57
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/629; H01R13/62933
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
258 words
An apparatus for establishing a plug-type connection for printed circuit boards comprising a contact element fixedly secured to a frame, at least one circuit board connectable with said contact element, guide means provided at said frame for slidably guiding said circuit board at its edge extending substantially parallel to the direction of insertion, said contact element having opposite side faces, a number of respective double-arm levers each incorporating an actuation arm and an engagement arm, means for rotatably mounting each of said double-arm levers at the region of one of the side faces of the contact element in a mirror-image arrangement, said circuit board having secured thereto a respective bolt member for each doublearm lever, the engagement arm of each double-arm lever having a slot at the end thereof removed from its axis of rotation for receiving said bolt member, and by means of the actuation arm of said double-arm lever the circuit board can be sleectively inserted at or withdrawn from the contact element through the agency of the engagement arm and the bolt member, and further including a substantially lens-shaped enlarged portion arranged at the engagement arm at the side confronting the associated guide means, impact means for bearing against each double-arm lever when said lever is rotated into a position for contact therewith, said lens-shaped enlarged portion, upOn rotation of said lever into contact with said impact means, providing a clamping action at a narrow gap formed between the engagement arm and the guide means so that the double-arm lever is retained in such position.
Claim 2
Independent Claim
258 words
An apparatus for establishing a plug-type connection for printed circuit boards comprising a contact element fixedly secured to a frame, at least one circuit board connectable with said contact element, guide means provided at said frame for slidably guiding said circuit board at its edge extending substantially parallel to the direction of insertion, said contact element having opposite side faces, a number of respective double-arm levers each incorporating an actuation arm and an engagement arm, means for rotatably mounting each of said double-arm levers at the region of one of the side faces of the contact element in a mirror-image arrangement, said circuit board having secured thereto a respective bolt member for each doublearm lever, the engagement arm of each double-arm lever having a slot at the end thereof removed from its axis of rotation for receiving said bolt member, and by means of the actuation arm of said double-arm lever the circuit board can be sleectively inserted at or withdrawn from the contact element through the agency of the engagement arm and the bolt member, and further including a substantially lens-shaped enlarged portion arranged at the engagement arm at the side confronting the associated guide means, impact means for bearing against each double-arm lever when said lever is rotated into a position for contact therewith, said lens-shaped enlarged portion, upOn rotation of said lever into contact with said impact means, providing a clamping action at a narrow gap formed between the engagement arm and the guide means so that the double-arm lever is retained in such position.
Claim 3
Dependent Claim
43 words
The apparatus as defined in claim 1, wherein the slot located at the engagement arm of the double-arm lever possesses a form approximating a circular involute, the base circle-center point of which substantially coincides with the axis of rotation of the double-arm lever.
Claim 4
Dependent Claim
26 words
The apparatus as defined in claim 1, wherein the slot located at the engagement arm of the double-arm lever possesses the shape of a circular arc.
Claim 5
Dependent Claim
71 words
The apparatus as defined in claim 1, wherein the engagement arm of the double-arm lever is constructed such that an inner edge of the slot is longer than an outer edge thereof so that when the apparatus is open, during manual insertion of the circuit board, the bolt member secured to the circuit board slides past the outer edge of the slot but bears against an extension of said inner edge.
Claim 6
Dependent Claim
17 words
The apparatus as defined in claim 1, wherein said actuation arm is longer than said engagement arm.
Claim 7
Dependent Claim
19 words
The apparatus as defined in claim 1, wherein said actuation arm possesses a flexed portion suitable for manual actuation.
Claim 8
Dependent Claim
25 words
The apparatus as defined in claim 1, wherein the mounting means for each said double-arm lever comprises journal pin means arranged at the guide means.
Claim 9
Dependent Claim
35 words
The apparatus as defined in claim 1, further including a multiplicity of said levers and guide means for the simultaneous insertion and retraction of a plurality of circuit boards connected together into an insertable unit.
Claim 10
Dependent Claim
69 words
The apparatus as defined in claim 1, wherein said double-arm lever is constructed as a double lever arrangement having a substantially U-shaped cross-sectional configuration for the insertion of two circuit boards, said double lever arrangement including a web interconnecting leg portions of the U-shaped double lever arrangement and said web bearing against the associated guide means when the apparatus is in a closed position with the circuit boards inserted.
Claim 11
Dependent Claim
24 words
The apparatus as defined in claim 1, wherein the double-arm lever has an axis of rotation which extends substantially perpendicular to the circuit board.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |