# US 5,341,629 A · Hinged-blade roadside mower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,341,629 A - Document ID: US5341629A - Status: Granted - Kind: A - Application number: 08/016,165 - Filed: 1993-02-09 - Granted: 1994-08-30 - Earliest claimed: 1993-02-09 - Inventors: Erich R. Penner - Web page: https://patentgrep.com/patent/US5341629A ## CPC - A01D 34/866: {Mounting means} - Y10S 56/03: Ground effect - Y10S 56/09: Detachable implement - Y10S 56/10: Uneven terrain compensation - A01D: HARVESTING; MOWING - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A mobile mower apparatus comprises a mower boom which is pivotally connected to a mobile vehicle for lateral extension therefrom. A mower frame is suspended from the boom. The mower frame has two frame sections which are connected to each other to allow the frame sections to pivot relative to each other about a generally horizontal pivot axis. A mower blade is mounted on each of the frame sections for relative pivotal motion corresponding to the motion of the frame sections. A hydraulic cylinder is connected to the mower frame to allow a human operator to control the relative angular positions of the first and second frame sections while mowing. The mower blades defining cutting lines which approximately intersect the pivot axis. ## Claims ### Claim 1 A dual-blade mower assembly for mounting upon a boom, comprising: a mower frame mountable to the boom; said mower frame having at least a first frame section and a second frame section; said first and second frame sections being connected to allow relative angular motion between said frame sections; a first mower blade mounted on said first frame section; a second mower blade mounted on said second frame section; and at least a first remotely-controlled power actuator operably connected to the mower frame, the first remotely-controlled power actuator being controllable remotely from the mower frame to allow a human operator to control the relative angular positions of the first and second frame sections while mowing. ### Claim 2 (depends on 1) A dual-blade mower assembly according to claim 1 wherein the first power actuator is double-acting to move the first and second frame sections in opposite relative angular directions. ### Claim 3 (depends on 1) A dual-blade mower assembly according to claim 1 wherein the first power actuator is a double-acting hydraulic cylinder. ### Claim 4 (depends on 1) A dual-blade mower assembly according to claim 1 wherein the first and second frame sections are pivotally connected about a pivot axis. ### Claim 5 (depends on 1) A dual-blade mower assembly according to claim 1 wherein the first and second frame sections are pivotally connected about a pivot axis, each mower blade defining a cutting line which approximately intersects said pivot axis. ### Claim 6 (depends on 1) A dual-blade mower assembly according to claim 1 wherein: the first and second frame sections are pivotally connected about a pivot axis; each of said mower blades having at least one cutting arm which extends outwardly from a rotational axis and defines a cutting plane; said cutting plane approximately intersecting said pivot axis between the first and second frame sections. ### Claim 7 (depends on 1) A dual-blade mower assembly according to claim 1 and further comprising at least one skid connected to the mower frame for contacting the ground. ### Claim 8 (depends on 1) A dual-blade mower assembly according to claim 1 wherein the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other. ### Claim 9 (depends on 1) A dual-blade mower assembly according to claim 1 and further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 10 (depends on 1) A dual-blade mower assembly according to claim 1 wherein: the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other; and the dual-blade mower assembly further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 11 A dual-blade mower assembly for mounting upon a mobile vehicle, comprising: a mower boom for connection to the mobile vehicle, the mower boom extending laterally from the mobile vehicle when connected thereto; a mower frame suspended from the boom; said mower frame having at least a first frame section and a second frame section; said first and second frame sections being connected to allow relative angular motion between said frame sections; a first mower blade mounted on said first frame section; a second mower blade mounted on said second frame section; and at least a first remotely-controlled power actuator operably connected to the mower frame, the first remotely-controlled power actuator being controllable from the mobile vehicle remotely from the mower frame to allow a human operator to control the relative angular positions of the first and second frame sections while mowing. ### Claim 12 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the first power actuator is double-acting to move the first and second frame sections in opposite relative angular directions. ### Claim 13 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the first power actuator is a double-acting hydraulic cylinder. ### Claim 14 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the first and second frame sections are pivotally connected about a pivot axis. ### Claim 15 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the first and second frame sections are pivotally connected about a pivot axis, each mower blade defining a cutting line which approximately intersects said pivot axis. ### Claim 16 (depends on 11) A dual-blade mower assembly according to claim 11 wherein: the first and second frame sections are pivotally connected about a pivot axis; each of said mower blades having at least one cutting arm which extends outwardly from a rotational axis and defines a cutting plane; said cutting plane approximately intersecting said pivot axis between the first and second frame sections. ### Claim 17 (depends on 11) A dual-blade mower assembly according to claim 11 and further comprising at least one skid connected to the mower frame for contacting the ground. ### Claim 18 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other. ### Claim 19 (depends on 11) A dual-blade mower assembly according to claim 11 and further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 20 (depends on 11) A dual-blade mower assembly according to claim 11 wherein: the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other; and the dual-blade mower assembly further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 21 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the mower boom comprises at least two articulated boom members. ### Claim 22 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the mower boom comprises: a first boom member for pivotal connection to the mobile vehicle; a second boom member pivotally connected to the first boom member, the second boom member extending from the first boom member to the mower frame; a first remotely-controlled boom actuator operably connected to the first boom member to allow a human operator to controllably pivot the first boom member while mowing; and a second remotely-controlled boom actuator operably connected between the first and second boom members to allow a human operator to controllably pivot the second boom member relative to the first boom member while mowing. ### Claim 23 (depends on 11) A dual-blade mower assembly according to claim 11 wherein the mower boom comprises: a first boom member for pivotal connection to the mobile vehicle; a second boom member pivotally connected to the first boom member, the second boom member extending from the first boom member to the mower frame; a first remotely-controlled boom actuator operably connected to the first boom member to controllably pivot the first boom member; a second remotely-controlled boom actuator operably connected between the first and second boom members to controllably pivot the first and second boom members relative to each other; and a second remotely-controlled power actuator operably connectable between the second boom member and one of the frame sections. ### Claim 24 A mobile mower apparatus comprising: a mobile vehicle; a mower boom pivotally connected to the mobile vehicle, the mower boom extending laterally from the front of the mobile vehicle; a mower frame suspended from the boom; said mower frame having at least a first frame section and a second frame section; said first and second frame sections being connected to allow relative angular motion between said frame sections; a first mower blade mounted on said first frame section; a second mower blade mounted on said second frame section; the mobile vehicle having a remote operator control located remotely from the mower frame; at least a first remotely-controlled power actuator operably connected to the mower frame, the first remotely-controlled power actuator being responsive to the remote operator control to allow a human operator to control the relative angular positions of the first and second frame sections while mowing. ### Claim 25 (depends on 24) A mobile mower apparatus according to claim 24 wherein the first power actuator is double-acting to move the first and second frame sections in opposite relative angular directions. ### Claim 26 (depends on 24) A mobile mower apparatus according to claim 24 wherein the first power actuator is a double-acting hydraulic cylinder. ### Claim 27 (depends on 24) A mobile mower apparatus according to claim 24 wherein the first and second frame sections are pivotally connected about a pivot axis. ### Claim 28 (depends on 24) A mobile mower apparatus according to claim 24 wherein the first and second frame sections are pivotally connected about a pivot axis, each mower blade defining a cutting line which approximately intersects said pivot axis. ### Claim 29 (depends on 24) A mobile mower apparatus according to claim 24 wherein: the first and second frame sections are pivotally connected about a pivot axis; each of said mower blades having at least one cutting arm which extends outwardly from a rotational axis and defines a cutting plane; said cutting plane approximately intersecting said pivot axis between the first and second frame sections. ### Claim 30 (depends on 24) A mobile mower apparatus according to claim 24 and further comprising at least one skid connected to the mower frame for contacting the ground. ### Claim 31 (depends on 24) A mobile mower apparatus according to claim 24 wherein the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other. ### Claim 32 (depends on 24) A mobile mower apparatus according to claim 24 and further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 33 (depends on 24) A mobile mower apparatus according to claim 24 wherein: the first power actuator is operably connected between the first and second frame sections to pivot the frame sections relative to each other; and the dual-blade mower assembly further comprising a second remotely-controlled power actuator operably connectable between the boom and one of the frame sections. ### Claim 34 (depends on 24) A mobile mower apparatus according to claim 24 wherein the mower boom comprises at least two articulated boom members. ### Claim 35 (depends on 24) A mobile mower apparatus according to claim 24 wherein the mower boom comprises: a first boom member for pivotal connection to the mobile vehicle; a second boom member pivotally connected to the first boom member, the second boom member extending from the first boom member to the mower frame; a first remotely-controlled boom actuator operably connected to the first boom member to allow a human operator to controllably pivot the first boom member while mowing; and a second remotely-controlled boom actuator operably connected between the first and second boom members to allow a human operator to controllably pivot the second boom member relative to the first boom member while mowing.