# US 4,398,739 A · Splash guard > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,398,739 A - Document ID: US4398739A - Status: Granted - Kind: A - Application number: 06/205,290 - Filed: 1980-11-10 - Granted: 1983-08-16 - Earliest claimed: 1980-11-10 - Assignees: National Rubber Company Limited - Inventors: Ross A. McKenzie; Hans Busch - Web page: https://patentgrep.com/patent/US4398739A ## CPC - B62D 25/188: {Mud-guard flaps for utility vehicles} - Y10T 428/2457: Parallel ribs and/or grooves - Y10T 428/249934: Fibers are aligned substantially parallel - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A splash guard to be suspended adjacent a vehicle wheel to reduce splash of liquid and slush comprises a sheet having a splash receiving surface covered with a plurality of spaced apart, discrete, elongated, stiff protuberances that are arranged in a pattern defining downward flow paths along the sheet and that direct liquid and slush thrown from the wheel into the flow paths, from which the liquid and slush can drain from the sheet. The sheet is reinforced by downwardly extending ribs which also impede sideward splashing. The protuberances and ribs are integral with the sheet. The sheet of elastomeric material is reinforced adjacent the splash receiving surface by embedded threads. The ribs are reinforced adjacent their free edges by embedded threads. The reinforcing threads resist excessive convex bending of the sheet. A guard of similar structure can be attached to the underside of a vehicle above the wheel. ## Claims ### Claim 1 A splash guard to be suspended adjacent a vehicle wheel to reduce splash of liquid and slush therefrom, comprising: a sheet of flexible material having a splash receiving surface covered with spaced apart, discrete, elongated, stiff nipple-like protuberances arranged in downwardly extending rows to define downwardly extending flow paths between them along the sheet and open at their lower ends; downwardly extending stiffening ribs protruding from the surface adjacent opposite edges thereof, the protuberances and ribs being integral with the sheet and directing the liquid and slush into the downwardly extending flow paths to drain from the sheet, the flow paths being about 1/100 to 3/4 inch wide, the protuberances about 1/4 to 1 inch high and the ribs about 3/8 to 11/4 inch high and higher than the protuberances. first reinforcement means in the form of a plurality of threads embedded within the sheet adjacent the splash receiving surface to resist excessive convex flexing of the sheet; and second reinforcement means in the form of a plurality of downwardly extending threads embedded within the ribs adjacent their free edges to resist excessive convex flexing of the ribs and the surface. ### Claim 2 (depends on 1) A splash guard as claimed in claim 1, wherein the protuberances are smooth surfaced. ### Claim 3 (depends on 1) A splash guard as claimed in claim 1, wherein the splash guard has means for attaching it to the underside of a vehicle adjacent a wheel. ### Claim 4 (depends on 3) In combination, a first splash guard as claimed in claim 3 together with a second splash guard to be attached adjacent to the underside of the vehicle adjacent the wheel to reduce splash of liquid and slush from the wheel, the second splash guard comprising a sheet of flexible material having a splash receiving surface covered with spaced apart, discrete, elongated, stiff nipple-like protuberences arranged in rows to define flow paths between them along the sheet and open at their ends. ### Claim 5 (depends on 1) A splash guard as claimed in claim 1, wherein the protuberances are uniformly distributed over the surface. ### Claim 6 (depends on 5) A splash guard as claimed in claim 5 wherein the surface density of the protruberances is about 144 to 3600 per square foot. ### Claim 7 (depends on 5) A splash guard as claimed in claim 5, wherein the rows are spaced about 1/5 to 1 inch apart. ### Claim 8 (depends on 1) A splash guard as claimed in claim 1, wherein the protuberances are in horizontal rows about 1/100 to 1 inch apart. ### Claim 9 (depends on 1) A splash guard as claimed in claim 1, wherein the sheet is of elastomeric material. ### Claim 10 (depends on 1) A splash guard as claimed in claim 1, wherein the ribs include a rib down the center of the sheet. ### Claim 11 A splash guard to be suspended adjacent a vehicle wheel to reduce splash of liquid and slush therefrom, comprising: a sheet of elastomeric material having a splash receiving surface covered with spaced apart, discrete, elongated, stiff, smooth surfaced nipple-like protuberances uniformly distributed over the surface in a density of about 144 to 3600 per square foot and arranged in horizontal rows about 1/100 to 1 inch apart and in downwardly extending rows spaced about 1/5 to 1 inch apart to define downwardly extending flow paths between them along the sheet and open at their lower ends; downwardly extending stiffening ribs protruding from the surface adjacent opposite edges and the center thereof, the protuberances and ribs being integral with the sheet and directing the liquid into downwardly extending flow paths to drain from the sheet, the flow paths being about 1/100 to 3/4 inch wide, the protuberances about 1/4 to 1 inch high and the ribs about 3/8 to 11/4 inch high and higher than the protuberances; first reinforcement means in the form of a plurality of threads embedded within the sheet adjacent the splash receiving surface to resist excessive convex flexing of the sheet; second reinforcement means in the form of a plurality of downwardly extending threads embedded within the ribs adjacent their free edges to resist excessive convex flexing of the ribs and the surface; and means for attaching it to the underside of a vehicle adjacent a wheel.