# US 2014/0196346 A1 · Foldable stock assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196346 A1 - Document ID: US20140196346A1 - Status: Published application - Kind: A1 - Application number: 13/742,830 - Filed: 2013-01-16 - Published: 2014-07-17 - Earliest claimed: 2013-01-16 - Assignees: Sig Sauer, Inc. - Applicants: Sig Sauer, Inc. - Inventors: DAVID A. GRIMSHAW; David Samuel Thompson; Anthony John Campman - Web page: https://patentgrep.com/patent/US20140196346A1 ## CPC - F41C 23/04: Folding or telescopic stocks or stock parts (articulated or collapsible guns F41A11/04) - F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR ## Abstract A folding stock assembly for a firearm includes a butt stock portion; a receiver interface portion; and a bidirectional hinge assembly configured to allow the butt stock portion to bidirectionally pivot with respect to the receiver interface portion. ## Claims ### Claim 1 A folding stock assembly for a firearm comprising: a butt stock portion; a receiver interface portion; and a bidirectional hinge assembly configured to allow the butt stock portion to bidirectionally pivot with respect to the receiver interface portion. ### Claim 2 (depends on 1) The folding stock assembly of claim 1 wherein the butt stock portion is configured to allow for a length of pull adjustment. ### Claim 3 (depends on 1) The folding stock assembly of claim 1 wherein the butt stock portion is configured to allow for a cheek weld adjustment. ### Claim 4 (depends on 1) The folding stock assembly of claim 1 wherein the bidirectional hinge assembly includes: a first hinge assembly; a first latch assembly configured to releasably lock the first hinge assembly in a non-folded position; a second hinge assembly; and a second latch assembly configured to releasably lock the second hinge assembly in the non-folded position. ### Claim 5 (depends on 4) The folding stock assembly of claim 4 wherein the bidirectional hinge assembly further includes: a coupler assembly configured to pivotally couple the first hinge assembly and the second hinge assembly. ### Claim 6 (depends on 1) The folding stock assembly of claim 1 further comprising: a first catch assembly configured to releasably hold the butt stock portion in a first folded position; and a second catch assembly configured to releasably hold the butt stock portion in a second folded position. ### Claim 7 (depends on 1) The folding stock assembly of claim 1 wherein the butt stock portion is a synthetic butt stock portion. ### Claim 8 A folding stock assembly for a firearm comprising: a synthetic butt stock portion; a receiver interface portion; and a bidirectional hinge assembly configured to allow the butt stock portion to bidirectionally pivot with respect to the receiver interface portion, wherein the bidirectional hinge assembly includes: a first hinge assembly, and a second hinge assembly. ### Claim 9 (depends on 8) The folding stock assembly of claim 8 wherein the bidirectional hinge assembly further includes: a first latch assembly configured to releasably lock the first hinge assembly in a non-folded position; and a second latch assembly configured to releasably lock the second hinge assembly in the non-folded position. ### Claim 10 (depends on 9) The folding stock assembly of claim 9 wherein the bidirectional hinge assembly further includes: a coupler assembly configured to pivotally couple the first hinge assembly and the second hinge assembly. ### Claim 11 (depends on 8) The folding stock assembly of claim 8 wherein the butt stock portion is configured to allow for a length of pull adjustment. ### Claim 12 (depends on 8) The folding stock assembly of claim 8 wherein the butt stock portion is configured to allow for a cheek weld adjustment. ### Claim 13 (depends on 8) The folding stock assembly of claim 8 further comprising: a first catch assembly configured to releasably hold the butt stock portion in a first folded position; and a second catch assembly configured to releasably hold the butt stock portion in a second folded position. ### Claim 14 A firearm comprising: a barrel assembly; a receiver assembly; and a folding stock assembly including: a butt stock portion, a receiver interface portion configured to engage the receiver assembly, and a bidirectional hinge assembly configured to allow the butt stock portion to bidirectionally pivot with respect to the receiver interface portion. ### Claim 15 (depends on 14) The firearm of claim 14 wherein the butt stock portion is configured to allow for a length of pull adjustment. ### Claim 16 (depends on 14) The firearm of claim 14 wherein the butt stock portion is configured to allow for a cheek weld adjustment. ### Claim 17 (depends on 14) The firearm of claim 14 wherein the bidirectional hinge assembly includes: a first hinge assembly; a first latch assembly configured to releasably lock the first hinge assembly in a non-folded position; a second hinge assembly; and a second latch assembly configured to releasably lock the second hinge assembly in the non-folded position. ### Claim 18 (depends on 17) The firearm of claim 17 wherein the bidirectional hinge assembly further includes: a coupler assembly configured to pivotally couple the first hinge assembly and the second hinge assembly. ### Claim 19 (depends on 14) The firearm of claim 14 further comprising: a first catch assembly configured to releasably hold the butt stock portion in a first folded position; and a second catch assembly configured to releasably hold the butt stock portion in a second folded position. ### Claim 20 (depends on 14) The firearm of claim 14 wherein the butt stock portion is a synthetic butt stock portion. ### Claim 21 (depends on 14) The firearm of claim 14 wherein the receiver assembly is a bolt action receiver assembly. ### Claim 22 (depends on 14) The firearm of claim 14 wherein the receiver assembly is a pump action receiver assembly. ### Claim 23 (depends on 14) The firearm of claim 14 wherein the receiver assembly is a semi-automatic/fully automatic receiver assembly.