# US 4,819,713 A · Retainer for electronic modules > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,819,713 A - Document ID: US4819713A - Status: Granted - Kind: A - Application number: 07/042,461 - Filed: 1987-04-23 - Granted: 1989-04-11 - Earliest claimed: 1987-04-23 - Assignees: Calmark Corporation - Inventors: Arnold M. Weisman - Web page: https://patentgrep.com/patent/US4819713A ## CPC - H05K 7/1404: {by edge clamping, e.g. wedges} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A retainer for retaining an electronic module, like a printed circuit card, in the slots of a cold plate or other holder, comprising a rail mounted to either the module or holder. An end wedge is fastened to one end of the rail so as to provide a stop for other, typically wedge-shaped bodies, slid onto the rail. Both the rail and wedge bodies are particularly configured so that the wedge bodies remain aligned, or are precluded from rotating about the rail or otherwise becoming misaligned. The present invention thus provides an easily assembled retainer, which avoids the use of specially manufactured free-floating screws. ## Claims ### Claim 1 A retainer for retaining an electronic module in a holder, comprising: a rail; a wedge component configured to be slidingly received by the rail, the rail and wedge component being configured such that said wedge component is substantially prevented from rotating about said rail, said wedge component including a side surface portion that fits about an outer surface of the rail; and first and second stops provided at each end of the rail to retain the wedge component onto the rail. ### Claim 2 (depends on 1) A retainer as claimed in claim 1, wherein the first stop comprises an end wedge component. ### Claim 3 (depends on 1) A retainer as claimed in claim 1, wherein the first stop is attached to the rail. ### Claim 4 (depends on 1) A retainer as claimed in claim 1, wherein the wedge components are thermally conductive. ### Claim 5 (depends on 1) A retainer as claimed in claim 1 wherein the wedge components are configured in slide above one another. ### Claim 6 (depends on 1) A retainer as claimed in claim 1, wherein the wedge components have ramped ends. ### Claim 7 (depends on 1) A retainer as claimed in claim 1 wherein said rail is mounted to said electronic module. ### Claim 8 (depends on 1) A retainer as claimed in claim 1 wherein said rail is mounted to said holder. ### Claim 9 (depends on 1) A retainer as claimed in claim 1, wherein the second stop further comprises adjustable means for compressing the wedge components together. ### Claim 10 (depends on 1) A retainer as claimed in claim 1, wherein the second steop comprises an end wedge component. ### Claim 11 (depends on 10) A retainer as claimed in claim 10, wherein the second stop further comprises a screw. ### Claim 12 (depends on 11) A retainer as claimed in claim 11, wherein the rail is threaded for receiving the screw of the second stop. ### Claim 13 A retainer for retaining an electronic module in a holder, comprising: a rail; a wedge component configured to be slidingly received by the rail, the rail and wedge component being configured such that said wedge component is substantially prevented from rotating about said rail said rail including a top portion that limits the perpendicular travel of the wedge component away from the rail; and first and second stops provided at each end of the rail to retain the wedge component onto the rail. ### Claim 14 (depends on 13) A retainer as claimed in claim 13, wherein the wedge components including flanges for contacting the top portion of the rail. ### Claim 15 (depends on 13) A retainer as claimed in claim 13 wherein the rail is configured with a substantially "T" bar-like cross-section. ### Claim 16 A retainer for retaining an electronic module in a holder, comprising: a rail configured with a substantially "T" bar-like cross-section; a wedge component seated upon the rail, the wedge component and the rail being configured to cooperatively couple with each other so that rotational movement of the wedge component about the longitudinal axis of the rail is substantially prevented; and first and second stops provided at each end of the rail to retain the wedge component onto the rail. ### Claim 17 (depends on 16) A retainer as claimed in claim 16, wherein the rail and wedge components are further configured to limit the perpendicular travel of the wedge components away from the rail. ### Claim 18 (depends on 16) A retainer as claimed in claim 16 wherein the wedge components are thermally conductive. ### Claim 19 A method for retaining an electronic module in a holder, comprising the steps of: mounting a rail configured with a substantially "T" bar-like cross-section to the electronic module; providing a stop at one end of the rail; sliding one or more wedge components onto the rail, the rail and wedge components being configured such that said wedge components are substantially prevented from rotating about said rail; providing a stop at the other end of the rail; placing the mounted rail in the holder; and adjusting the wedge components so that they place retaining pressure against the holder. ### Claim 20 A method for retaining an electronic module in a holder, comprising the steps of: mounting a rail configured with a substantially "T" bar-like cross-section to the holder; providing a stop at one end of the rail; sliding one or more wedge components onto the rail, the rail and wedge components being configured such taht said wedge components are substantially prevented from rotating about said rail; providing a stop at the other end of the rail; placing the electronic module between the rail and the holder; and adjusting the wedge components so that they place retaining pressure against the electronic module. ### Claim 21 A retainer for retaining an electronic module in a holder, comprising: a rail configured with a substantially "T" bar-like cross-section; a wedge component configured to be slidingly received by the rail, the rail and wedge component being configured such that said wedge component is substantially prevented from rotating about said rail; and first and second stops provided at each end of the rail to retain the wedge components onto the rail.