# US 8,464,819 B2 · Working machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,464,819 B2 - Document ID: US8464819B2 - Status: Granted - Kind: B2 - Application number: 13/024,269 - Filed: 2011-02-09 - Published: 2011-09-08 - Granted: 2013-06-18 - Earliest claimed: 2010-02-11 - Assignees: J.C. Bamford Excavators Limited - Applicants: Gary Major; Martyn L. Molsom - Inventors: Gary Major; Martyn L. Molsom - Web page: https://patentgrep.com/patent/US8464819B2 ## CPC - E02F 9/166: {movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00)} - B62D 33/0617: {for tractors or off-the-road vehicles (protective devices for drivers in case of overturning of tractors B60R21/131)} - E02F 3/283: {with a single arm pivoted directly on the chassis (linkage mechanism for it E02F3/3405)} - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A working machine (10) includes a body (11) having a front end (12) and a rear end (13), the body being provided with a ground engaging propulsion structure (15) whereby the machine (10) may be driven over the ground, a loading arm assembly (25) which includes a single loading arm (26) which is mounted at one end (26a) relative to the body (11) and which extends forwardly at towards one side of the body (11), beyond the front end (12) of the body (11), to a second end (26b) where there is a mounting for a working implement (35) the machine (10) further including an operator's cab (50) mounted on the body (11) towards a second side of the body (1)) opposite to the first side where the arm (26) extends, and at the front end (12) of the body (11) so that no part of the body (11) extends significantly forwardly of the cab (50), and wherein the cab (50) includes a cab roof (58), a cab floor (60), a front wall (52), a rear wall (59) and a first side wall (53) adjacent to the loading arm assembly (25), and a side (54) opposite to the first side wall (53), which affords a substantially unobstructed opening, which extends for substantially the entire length and height of the cab (50) at the second side (54), and the opening being closable by an access door (56). ## Claims ### Claim 1 A working machine which includes a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure whereby the machine may be driven over the ground, a loading arm assembly which includes a single loading arm which is mounted at one end relative to the body and which extends forwardly at or towards one side of the body, beyond the front end of the body, to a second end where there is a mounting for a working implement, the machine further including an operator's cab mounted on the body towards a second side of the body opposite to the first side where the arm extends, and at the front end of the body so that no part of the body extends significantly forwardly of the cab, and wherein the cab includes a cab roof, a cab floor, a front wall, a rear wall and a first side wall adjacent to the loading arm assembly, and a second cab side opposite to the first side wall, which affords a unobstructed opening, which extends for substantially the entire length of the cab at the second cab side, and the opening being closable by an access door wherein the machine is a skid-steer loading machine, in which the ground engaging propulsion structure includes a pair of wheels or a continuous loop track, at either side of the body, and steering is effected by differentially driving the wheels or at least one of the wheels of the pair, or the track, at one side of the body relative to the wheel or wheels or track at the other side of the body. ### Claim 2 (depends on 1) A machine according to claim 1 wherein the substantially unobstructed opening at the second side of the cab is bounded by a cab frame, the cab frame mounting the access door. ### Claim 3 (depends on 2) A machine according to claim 2 wherein the access door is pivoted on hinges to the cab frame. ### Claim 4 (depends on 1) A machine according to claim 1 which includes a cab frame provided by a pair of inverted generally U-shaped frames with at least at the open side, no intervening frame part. ### Claim 5 (depends on 4) A machine according to claim 4 wherein the U-shaped frames are provided respectively at the cab sides and have one or more panels attached to them to provide the cab roof, the front wall, the one side wall of the cab and the cab rear wall. ### Claim 6 (depends on 5) A machine according to claim 5 wherein the access door is hinged to a limb of one of the U-shaped frames which is at the rear of the cab and provides a rear post. ### Claim 7 (depends on 4) A machine according to claim 4 wherein the cab includes one or more transverse frame members which connect the U-shaped frames and provide support for the floor. ### Claim 8 A working machine which includes a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure whereby the machine may be driven over the ground, a loading arm assembly which includes a single loading arm which is mounted at one end relative to the body and which extends forwardly at or towards one side of the body, beyond the front end of the body, to a second end where there is a mounting for a working implement, the machine further including an operator's cab mounted on the body towards a second side of the body opposite to the first side where the arm extends, and at the front end of the body so that no part of the body extends significantly forwardly of the cab, and wherein the cab includes a cab roof, a cab floor, a front wall, a rear wall and a first side wall adjacent to the loading arm assembly, and a second cab side opposite to the first side wall, which affords a substantially unobstructed opening, which extends for substantially the entire length of the cab at the second cab side, and the opening being closable by an access door, and wherein the cab is movable relative to the body from an “in use” condition to a maintenance condition. ### Claim 9 (depends on 8) A machine according to claim 8 wherein the cab is movable by being mounted to the front end of the body by hinge devices so that the cab is pivotal forwardly relative to the body. ### Claim 10 (depends on 8) A machine according to claim 8 wherein the machine includes a latch mechanism which is operable to retain the cab in its in use condition, the latch being releasable to permit the cab to be moved to its maintenance condition. ### Claim 11 (depends on 10) A machine according to claim 10 wherein the machine includes an interlock which prevents the latch mechanism being released for cab movement until the loading arm is raised beyond a threshold raised position. ### Claim 12 (depends on 8) A machine according to claim 8 wherein movement of the cab to the maintenance condition is assisted by a resilient device. ### Claim 13 A working machine which includes a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure whereby the machine may be driven over the ground, a loading arm assembly which includes a single loading arm which is mounted at one end relative to the body and which extends forwardly at towards one side of the body, beyond the front end of the body, to a second end where there is a mounting for a working implement, the machine further including an operator's cab mounted on the body towards a second side of the body opposite to the first side where the arm extends, and wherein the cab includes a cab roof, a cab floor, a front wall, a rear wall and a first side adjacent to the loading arm assembly, and a second cab side opposite to the first side wall, and wherein the cab is moveable relative to the body by being mounted to the front end of the body by hinge devices so that the cab can be pivoted from a normal “in use” condition to a maintenance condition to allow for access to beneath the cab. ### Claim 14 (depends on 1) A machine according to claim 1, wherein the rear wall of the cab is vertical. ### Claim 15 (depends on 14) A machine according to claim 14, wherein the access door is hinged to the rear of the cab. ### Claim 16 (depends on 6) A machine according to claim 6, wherein the rear post provided by the U-shaped frame is vertical. ### Claim 17 (depends on 13) A machine according to claim 13, wherein an opening is provided in the second cab side to allow the operator access to the cab, the opening being closable by an access door. ### Claim 18 (depends on 17) A machine according to claim 17, wherein the access door extends the entire length of the cab. ### Claim 19 (depends on 18) A machine according to claim 18, wherein the rear wall of the cab is vertical. ### Claim 20 (depends on 19) A machine according to claim 19, wherein the access door is hinged to the rear of the cab. ### Claim 21 (depends on 13) A machine according to claim 13 which includes a cab frame provided by a pair of inverted generally U-shaped frames with at least at the second side, an opening bound by no intervening frame part. ### Claim 22 (depends on 21) A machine according to claim 21, wherein the U-shaped frames are provided respectively at the cab sides and have one or more panels attached to them to provide the cab roof, the front wall, the one side wall of the cab and the rear wall. ### Claim 23 (depends on 22) A machine according to claim 22, wherein an opening is provided in the second cab side to allow the operator access to the cab, the opening being closable by an access door, the access door being hinged to a limb of one of the U-shaped frames which is at the rear of the cab and provides a rear post. ### Claim 24 (depends on 23) A machine according to claim 23, wherein the rear post is vertical.