# US 7,743,545 B1 · Vertical foregrip leg extender > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,743,545 B1 - Document ID: US7743545B1 - Status: Granted - Kind: B1 - Application number: 11/937,704 - Filed: 2007-11-09 - Granted: 2010-06-29 - Earliest claimed: 2003-12-02 - Assignees: Grip Pod Systems, LLC - Inventors: Joseph R. Moody; Joseph D Gaddini - Web page: https://patentgrep.com/patent/US7743545B1 ## CPC - F41C 23/16: Forestocks; Handgrips; Hand guards (pump-action guns F41C7/02) - F41A 23/10: adjustable - 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 - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## Abstract Devices, and methods of extending legs from vertical fore grip handles on firearms, such as rifles, to different height positions. The vertical fore grip can include expandable bipod legs. The legs can be individually extended to different lengths by moving telescoping rod members in leg housings from retracted positions to extended positions. A lever switch can allow for the legs to be locked into the different extended positions, and depressing the switch can allow for the legs to go back to the retracted positions. Anti-rotation pins and slots can prevent the telescoping members from rotating relative to the legs. ## Claims ### Claim 1 A firearm fore grip with extendable legs, comprising: an elongated handle with a generally elongated cylindrical housing, having a top end and a bottom end, the top end having a mount for attaching the upper end to a firearm having picatinny rails underneath the firearm, the mount having a pair of parallel rail clamps with a longitudinal space therebetween, the rail clamps for clamping to portions of the picatinny rails under the firearm; a pair of legs, each of the legs having an upper end and a bottom end, each of the legs having a longitudinal axis; an activation switch on the cylindrical housing which when activated causes the pair of legs to move from a retracted position with the legs substantially within the cylindrical housing, to release to an expansion position where substantially much of the legs protrude out beneath the cylindrical housing; and each of the legs is independently adjustable in length to different height positions, wherein the elongated handle being used as a fore grip that is adaptable to be gripped by a user when the pair of the legs are in the retracted position, and wherein the legs form a bipod when the legs are in the expansion position. ### Claim 2 (depends on 1) The fore grip of claim 1, wherein the legs include: an access slot for allowing a user to grip a portion of the elongated rod members in order to extend the legs to the different extendable positions. ### Claim 3 (depends on 1) The fore grip of claim 1, wherein the elongated rod members include: stepped grooves along an outer side of the elongated rod members. ### Claim 4 (depends on 1) The fore grip of claim 1, further comprising: a depressible member for locking each of the legs to different extendable positions. ### Claim 5 (depends on 1) The fore grip of claim 1, further comprising: pins extending from the rod members through the legs for preventing the rod members from rotating relative to the legs. ### Claim 6 (depends on 5) The fore grip of claim 5, further comprising: longitudinal slots in the legs for allowing the pins from the rod members to slide therethrough, wherein the pins and the longitudinal slots are for preventing the rod members from rotating relative to the legs. ### Claim 7 (depends on 1) The fore grip of claim 1, wherein the rod members include angled foot portions which fit within angled foot portions on each of the legs. ### Claim 8 (depends on 1) The fore grip of claim 1, further comprising: angled foot portions on the bottom end of each of the legs, wherein the angled foot portions extend out from underneath a bottom of the elongated cylindrical housing. ### Claim 9 A bipod support stand for firearms with extendable legs comprising: an elongated cylindrical housing adaptable for being used as a fore grip for a firearm, the housing having an upper mount for attaching underneath the firearm, the housing having a bottom end with an opening therethrough; a pair of telescoping legs having upper ends and lower ends, the pair of legs having a retracted position that substantially fits inside of the housing, wherein the legs in the retracted position allows the housing to be used as the fore grip for the firearm, the legs having an extended position that forms an angled bipod legs configuration that are adaptable to support the firearm over a ground surface, wherein the telescoping legs are individually height adjusted over different support surfaces, wherein each of the bipod legs include: telescoping members; and an access slot for allowing a user to grip a portion of the telescoping members in order to extend the telescoping members to the different lengths. ### Claim 10 (depends on 9) The bipod support stand of claim 9, wherein the telescoping members each include: stepped grooves along an outer side. ### Claim 11 (depends on 10) The bipod support stand of claim 10, further comprising: a switch for locking the telescoping members in selected stepped grooves in different extendable positions. ### Claim 12 (depends on 9) The bipod support stand of claim 9, further comprising: pins extending from the telescoping members through the legs for preventing rod members from rotating relative to the legs. ### Claim 13 (depends on 12) The bipod support stand of claim 12, further comprising: longitudinal slots in the legs for allowing the pins from the telescoping members to slide therethrough, wherein the pins and the longitudinal slots are for preventing the telescoping members from rotating relative to the legs. ### Claim 14 (depends on 9) The bipod support stand of claim 9, wherein each of the legs include angled foot portions on the lower ends of each of the legs, wherein the angled foot portions extend out from underneath a bottom of the elongated cylindrical housing. ### Claim 15 (depends on 9) The bipod support stand of claim 9, wherein the upper mount on the elongated cylindrical housing includes: a pair of parallel rail clamps with a longitudinal space therebetween, the rail clamps for clamping to portions of picatinny rails under the firearm. ### Claim 16 (depends on 9) The bipod support stand of claim 9, further comprising: an activation switch on the cylindrical housing which when activated causes the pair of legs to move from a retracted position with the legs substantially within the cylindrical housing, to release to an expansion position where substantially much of the legs protrude out beneath the cylindrical housing. ### Claim 17 A firearm fore grip with extendable legs, comprising: an elongated handle with a generally elongated cylindrical housing, having a top end and a bottom end, the top end having a mount for attaching the upper end to a firearm having picatinny rails underneath the firearm, the mount having a pair of parallel rail clamps with a longitudinal space therebetween, the rail clamps for clamping to portions of the picatinny rails under the firearm; a pair of legs, each of the legs having an upper end and a bottom end, each of the legs having a longitudinal axis, an activation switch on the cylindrical housing which when activated causes the pair of legs to move from a retracted position with the legs substantially within the cylindrical housing, to release to an expansion position where substantially much of the legs protrude out beneath the cylindrical housing; and each of the legs which is adjustably extended to different height positions, wherein the elongated handle being used as a fore grip that is adaptable to be gripped by a user when the pair of the legs are in the retracted position, and wherein the legs form a bipod when the legs are in the expansion position; and a depressible member for locking each of the legs to different extendable positions. ### Claim 18 A bipod support stand for firearms with extendable legs comprising: an elongated cylindrical housing adaptable for being used as a fore grip for a firearm, the housing having an upper mount for attaching underneath the firearm, the housing having a bottom end with an opening therethrough; a pair of telescoping legs having upper ends and lower ends, the pair of legs having a retracted position that substantially fits inside of the housing, wherein the legs in the retracted position allows the housing to be used as the fore grip for the firearm, the legs having an extended position that forms an angled bipod legs configuration that are adaptable to support the firearm over aground surface, wherein the telescoping legs are individually height adjusted over different support surfaces; and a pair of activation switches, each of the switches for allowing each of the telescoping legs to be individually height adjusted. ### Claim 19 A bipod support stand for firearms with extendable legs comprising: an elongated cylindrical housing adaptable for being used as a fore grip for a firearm, the housing having an upper mount for attaching underneath the firearm, the housing having a bottom end with an opening therethrough; a pair of telescoping legs having upper ends and lower ends, the pair of legs having a retracted position that substantially fits inside of the housing, wherein the legs in the retracted position allows the housing to be used as the fore grip for the firearm, the legs having an extended position that forms an angled bipod legs configuration that are adaptable to support the firearm over a ground surface, wherein the telescoping legs are individually height adjusted over different support surfaces; a bipod spring for spreading the legs from being substantially parallel to one another into the bipod legs configuration; a first leg spring for extending a first leg of the pair of the telescoping legs to be individually height adjusted; and a second leg spring for extending a second leg of the pair of the telescoping legs to be individually height adjusted. ### Claim 20 A bipod support stand for firearms with extendable legs comprising: an elongated cylindrical housing adaptable for being used as a fore grip for a firearm, the housing having an upper mount for attaching underneath the firearm, the housing having a bottom end with an opening therethrough; a pair of telescoping legs having upper ends and lower ends, the pair of legs having a retracted position that substantially fits inside of the housing, wherein the legs in the retracted position allows the housing to be used as the fore grip for the firearm, the legs having an extended position that forms an angled biped legs configuration that are adaptable to support the firearm over a ground surface, wherein the telescoping legs are individually height adjusted over different support surfaces; and a pair of activation switches, each of the switches for allowing each of the legs to be individually height adjusted. ### Claim 21 A bipod support stand for firearms with extendable legs comprising: an elongated cylindrical housing adaptable for being used as a fore grip for a firearm, the housing having an upper mount for attaching underneath the firearm, the housing having a bottom end with an opening therethrough; a pair of telescoping legs having upper ends and lower ends, the pair of legs having a retracted position that substantially fits inside of the housing, wherein the legs in the retracted position allows the housing to be used as the fore grip for the firearm, the legs having an extended position that forms an angled bipod legs configuration that are adaptable to support the firearm over a ground surface, wherein the telescoping legs are individually height adjusted over different support surfaces; a bipod spring for spreading the legs from being substantially parallel to one another into the bipod; a first leg spring for extending one of the legs to different height positions; and a second leg spring for extending another of the legs to different height positions.