US3903576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extracting circuit cards from chassis
Assignee: Bendix Corp
•
Filing: 1974-10-01
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Granted: 1975-09-09
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Expires: 1994-10-01
Abstract
Abstract Apparatus for extracting circuit boards from chassis includes a pair of clamps having a variable center to center distance relative to holes carried in brackets secured to the circuit boards. The clamps are inserted in the holes and actuated against a corresponding pair of springs, whereby the spring force fixes the center to center distance while hooks on the clamps engage the circuit board brackets for operator removal of the boards from the chassis.
Inventors
- 👤 Seymour Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:47
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1401; H05K7/1415; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53274; Y10T29/53283; Y10T29/53909; Y10T29/53943
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
229 words
A device for disengaging and removing a circuit board from a chassis, the circuit board being supported in the chassis and engaged with mating connectors therein, the device comprising: clamping means including a pair of clamps supported in variable spaced relation to each other and relative to receiving holes carried by a pair of brackets supported by the circuit board; each of the clamps including an end received by the hole in the corresponding circuit board bracket; a pair of resilient members, each of which is supported adjacent a corresponding one of said clamps, for exerting a force on the clamps to fix the space therebetween when the clamping means is actuated away from the circuit board against the resilient members; the clamp ends being arranged to grasp the area around the underside of the receiving holes upon the space between the clamps being fixed; means arranged with the clamping means and resilient means for enabling an operator to exert a force for first disengaging the circuit board from the chassis connectors and then removing the board from the chassis; and the clamp ends being released from the underside of the receiving holes upon actuation of the clamping means toward the circuit board after the board has been removed from the chassis to release the force exerted on the clamps by the resilient members and to release the board.
Claim 2
Independent Claim
229 words
A device for disengaging and removing a circuit board from a chassis, the circuit board being supported in the chassis and engaged with mating connectors therein, the device comprising: clamping means including a pair of clamps supported in variable spaced relation to each other and relative to receiving holes carried by a pair of brackets supported by the circuit board; each of the clamps including an end received by the hole in the corresponding circuit board bracket; a pair of resilient members, each of which is supported adjacent a corresponding one of said clamps, for exerting a force on the clamps to fix the space therebetween when the clamping means is actuated away from the circuit board against the resilient members; the clamp ends being arranged to grasp the area around the underside of the receiving holes upon the space between the clamps being fixed; means arranged with the clamping means and resilient means for enabling an operator to exert a force for first disengaging the circuit board from the chassis connectors and then removing the board from the chassis; and the clamp ends being released from the underside of the receiving holes upon actuation of the clamping means toward the circuit board after the board has been removed from the chassis to release the force exerted on the clamps by the resilient members and to release the board.
Claim 3
Dependent Claim
87 words
A device as described by claim 1, including: a base having means for aligning the base with the chassis; elongated holes carried by the base, the enDs of the variable spaced clamps extending through the elongated holes in the base and being received by the bracket holes; a handle supported by the base and spanning the clamping means; and the clamping means being actuated away from the circuit board toward the handle whereupon the resilient members exert a force on the clamps to fix the space therebetween.
Claim 4
Dependent Claim
105 words
A device as described by claim 2, wherein: the clamps included in the clamping means each have first and second members at substantially right angles to each other; and the handle spanning the clamping means includes channels at opposite ends thereof, the channel at one end supporting one of the resilient members and receiving one of the first and second members of one of the clamps adjacent its associated resilient member, and the channel at the opposite end supporting the other of the resilient members and receiving one of the first and second members of the other of the clamps adjacent its associated resilient member.
Claim 5
Dependent Claim
34 words
A device as described by claim 3, wherein the clamping means further includes: a channel member for supporting the other of the first and second right angle clamp members of each of the clamps.
Claim 6
Dependent Claim
47 words
A device as described by claim 4, wherein: the right angle clamp members supported by the channel are engaged in tongue and groove arrangement; and a pin extends through the channel and the right angle clamp members for loosely securing said right angle and channel members together.
Claim 7
Dependent Claim
32 words
A device as described by claim 1, wherein: the clamp ends are hooked to grasp the area around the underside of the receiving holes upon the space between the clamps being fixed.
Claim 8
Dependent Claim
70 words
A device as described by claim 1, wherein the means arranged with the clamping means and the resilient means for enabling an operator to exert a force for first disengaging the circuit board from the chassis connectors and then removing the board from the chassis includes: a handle spanning the clamping means and supporting the resilient means, and graspable by the operator with the clamping means for exerting said force.
References Cited (Backward Citations)
US1563000A
Cited
US2821777A
Cited
US3050841A
Cited
US3457621A
Cited
US3484129A
Cited
US3617083A
Cited
US3701558A
Cited
US3759559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |