# US 11,077,950 B2 · Arm restraint latch release assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,950 B2 - Document ID: US11077950B2 - Status: Granted - Kind: B2 - Application number: 16/422,528 - Filed: 2019-05-24 - Published: 2020-11-26 - Granted: 2021-08-03 - Earliest claimed: 2019-05-24 - Assignees: AMI Industries, Inc. - Applicants: AMI Industries, Inc. - Inventors: Cyle Teal; Bradley Mastrolia - Web page: https://patentgrep.com/patent/US11077950B2 ## CPC - B64D 11/0689: {specially adapted for pilots} - B64D 25/10: Ejector seats - B64D 25/04: Seat modifications - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT ## Abstract An arm restraint assembly for an ejection seat may comprise a primary arm configured to pivot about a primary arm pivot joint. A latch may be coupled to the primary arm. The latch may comprise a first pair of lugs and may be configured to pivot relative to the primary arm. A primary shear pin may extend between the first pair of lugs. A lanyard may be coupled to the primary shear pin. ## Claims ### Claim 1 An arm restraint assembly for an ejection seat, comprising: a primary arm configured to pivot about a primary arm pivot joint; a latch coupled to the primary arm, the latch comprising a first pair of lugs, wherein the latch is configured to pivot relative to the primary arm; a primary shear pin extending between the first pair of lugs; and a lanyard coupled to the primary shear pin. ### Claim 2 (depends on 1) The arm restraint assembly of claim 1, further comprising a netting coupled to the primary arm. ### Claim 3 (depends on 2) The arm restraint assembly of claim 2, further comprising a secondary arm coupled to the netting, the secondary arm being configured to pivot about a secondary arm pivot joint. ### Claim 4 (depends on 3) The arm restraint assembly of claim 3, wherein the secondary arm defines a secondary orifice, and wherein in a non-deployed position a hook portion of the latch is located through the secondary orifice. ### Claim 5 (depends on 1) The arm restraint assembly of claim 1, further comprising a secondary shear pin coupled to a second pair of lugs of the latch. ### Claim 6 (depends on 5) The arm restraint assembly of claim 5, wherein the secondary shear pin is designed to shear at a first minimum shear load, and wherein the primary shear pin is designed to shear at a second minimum shear load, the second minimum shear load being greater than the first minimum shear load. ### Claim 7 (depends on 1) The arm restraint assembly of claim 1, further comprising a lock assembly coupled to the primary arm, wherein the lock assembly is configured to restrict rotation of the primary arm. ### Claim 8 (depends on 7) The arm restraint assembly of claim 7, further comprising a primary arm bracket coupled to the primary arm, wherein the lock assembly comprises a tab coupled to the primary arm and biased toward the primary arm bracket, and wherein the primary arm bracket defines a groove configured to receive the tab in response to the primary arm rotating a predetermined number of degrees. ### Claim 9 An ejection seat, comprising: a seat back; and an arm restraint assembly coupled to the seat back, the arm restraint assembly comprising: a primary arm configured to pivot relative to the seat back; a latch coupled to the primary arm, the latch comprising a first pair of lugs; a primary shear pin extending between the first pair of lugs; and a lanyard coupled to the primary shear pin. ### Claim 10 (depends on 9) The ejection seat of claim 9, wherein the arm restraint assembly further comprises a secondary arm, wherein in a non-deployed position the secondary arm is located between the primary arm and the seat back. ### Claim 11 (depends on 10) The ejection seat of claim 10, wherein the secondary arm defines a secondary orifice, and wherein in the non-deployed position a portion of the latch is located through the secondary orifice. ### Claim 12 (depends on 9) The ejection seat of claim 9, wherein the arm restraint assembly further comprises a secondary shear pin extending between a second pair of lugs of the latch. ### Claim 13 (depends on 12) The ejection seat of claim 12, wherein the second pair of lugs extends from a surface of the latch, and wherein in a non-deployed position the lanyard is located between the secondary shear pin and the surface of the latch. ### Claim 14 (depends on 9) The ejection seat of claim 9, wherein the latch further comprises a leg configured to limit a rotation of the latch relative to the primary arm. ### Claim 15 (depends on 9) The ejection seat of claim 9, wherein the arm restraint assembly further comprises a lock assembly coupled to the primary arm, wherein the lock assembly is configured to restrict rotation of the primary arm. ### Claim 16 (depends on 15) The ejection seat of claim 15, wherein the arm restraint assembly further comprises a primary arm bracket coupled to the primary arm, and wherein the lock assembly comprises a tab coupled to the primary arm, and wherein the primary arm bracket defines a groove configured to receive the tab in response to the primary arm rotating a predetermined number of degrees. ### Claim 17 An arm restraint assembly configured to deploy in response to expulsion of an ejection seat from a cockpit, the arm restraint assembly comprising: a left arm restraint and a right arm restraint, wherein the left arm restraint and the right arm restraint each comprise: a primary arm configured to pivot to a fully-deployed position within the cockpit; a latch coupled to the primary arm, the latch comprising a first pair of lugs; and a primary shear pin extending between the first pair of lugs. ### Claim 18 (depends on 17) The arm restraint assembly of claim 17, wherein the left arm restraint and the right arm restraint each further comprise a lanyard coupled to the primary shear pin. ### Claim 19 (depends on 17) The arm restraint assembly of claim 17, wherein the left arm restraint and the right arm restraint each further comprise a secondary shear pin extending between a second pair of lugs of the latch. ### Claim 20 (depends on 17) The arm restraint assembly of claim 17, wherein the left arm restraint and the right arm restraint each further comprise a secondary arm, and wherein in a non-deployed position a portion of the latch is located through a secondary orifice defined by the secondary arm.