# US 4,391,052 A · Snow blower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,052 A - Document ID: US4391052A - Status: Granted - Kind: A - Application number: 06/333,727 - Filed: 1981-12-23 - Granted: 1983-07-05 - Earliest claimed: 1981-12-23 - Inventors: Burlin A. Guy, Jr. - Web page: https://patentgrep.com/patent/US4391052A ## CPC - E01H 5/098: {about horizontal or substantially horizontal axises perpendicular or substantially perpendicular to the direction of clearing} - E01H: STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING {OR PREVENTING} FOG IN GENERAL {CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS}(cleaning in general B08B) ## Abstract A horizontally elongated and laterally opening shroud is provided having one open longitudinal front side and one closed longitudinal rear side as well as opposite end mounting structures at least substantially closing the opposite ends of the shroud. A pair of spiral bladed rotary conveyor members are journalled in the opposite end portions of the shroud for simultaneous rotation about an axis extending longitudinally of the shroud and the closed rear side of the shroud includes a lateral outlet centrally intermediate the mounting structures and with which the horizontal axial inlet of a snow blower including an upwardly opening tangential outlet is registered. The opposite ends of the shroud include vertically adjustable transverse skids and the conveyor members are driven by a fluid motor supported from one of the mounting structures. The tangential outlet of the blower assembly has a horizontally curving outlet head journalled therefrom for adjustable positioning about an upstanding axis and the shroud includes rearwardly projecting mounting arm structure for pivotal support from a prime mower. ## Claims ### Claim 1 A snow blower assembly including a horizontally elongated and laterally opening shroud having one open longitudinal front side and one closed longitudinal rear side as well as opposite end mounting structures at least substantially closing the opposite ends of said shroud, a pair of spiral bladed rotary conveyor members journalled in the opposite end portions of said shroud for simultaneous rotation about an axis extending longitudinally of said shroud, said closed side including a lateral outlet formed therein centrally intermediate said mounting structures and opening rearwardly outwardly of said shroud, a horizontal axial inlet and upwardly opening tangential outlet blower assembly supported relative to said closed side of said shroud and including a rotary impeller registered with said lateral outlet, first and second fluid motors drivingly coupled to said rotary conveyor members and said rotary impeller, each of said first and second fluid motors being of the variable speed type, a pair of opposite end laterally extending horizontal skids carried by opposite ends of said shroud and projecting slightly below the lower periphery of said shroud, rearwardly projecting arm means carried by said shroud, a prime mover including front and rear ends, means pivotally supporting the rear ends of said arm means from said prime mover for angular displacement about a horizontal axis generally paralleling the first mentioned axis, first motor means operatively connected between said arm means and said prime mover for adjustably angularly displacing said arm means relative to said prime mover, said tangential outlet including a horizontally curving outlet head rotatably supported therefrom for rotation about an upstanding axis concentric with said tangential outlet, and second motor means operatively connected between said outlet head and said tangential outlet for adjustably angularly displacing said head relative to said tangential outlet, support means supporting said skids from said shroud for vertical adjustment relative thereto, said support means including fluid motor means for adjustably shifting said skids relative to said shroud. ### Claim 2 (depends on 1) The snow blower of claim 1 wherein said spiral bladed rotary conveyor members are carried by a single shaft extending longitudinally of said elongated shroud, the opposite ends of said shroud being journalled from said opposite end mounting structures. ### Claim 3 (depends on 2) The snow blower of claim 2 wherein said shroud includes a central journal bearing supported therefrom intermediate the opposite ends of said shroud and from which the longitudinal mid-portion of said single shaft is journalled. ### Claim 4 (depends on 1) The snow blower of claim 1 wherein said first and second fluid motors are directly drivingly connected to said rotary conveyor members and said rotary impeller. ### Claim 5 (depends on 4) The snow blower of claim 4 wherein said opposite end skids are carried by forwardly and downwardly extendable and upwardly and rearwardly retractable piston rod portions of a pair of double-acting hydraulic cylinders carried by said opposite end mounting structures and comprising said support means. ### Claim 6 (depends on 5) The snow blower of claim 5 wherein said spiral bladed rotary conveyor member are carried by a single shaft extending longitudinally of said elongated shroud, the opposite ends of said shroud being journalled from said opposite end mounting structures. ### Claim 7 (depends on 6) The snow blower of claim 6 wherein said shroud includes a central journal bearing supported therefrom intermediate the opposite ends of said shroud and from which the longitudinal mid-portion of said single shaft is journalled.