Mortar mixer frame having integral hydraulic fluid reservoir with means for cooling the hydraulic fluid
US5489150A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1995 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Jan 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/4213
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A motar mixer driven by a hydraulic pump and motor which are powered by an gasoline engine. The mixer frame is configured as a trailer to facilitate transport of the mortar mixer. The trailer frame is further adapted so that the frame members form a fluid reservoir for the hydraulic fluid for the system. A tubular steel frame assembly, is manufactured so that the inner chambers of the frame members are in fluid communication with one another. A reservoir dam is placed inside the horizontal trailer frame member to provide a crush zone for eliminating risk of damage to the reservoir in the event that the weld that secures the front trailer frame member to the horizontal trailer frame member fails or fractures. Cooling of the hydraulic fluid and engine/pump compartment is accomplished by creating a flow of ambient air through a duct which passes along the side of and is affixed to the horizontal trailer frame member, the flow of air being generated by a squirrel cage fan which is attached directly to and rotates with the output shaft of the hydraulic pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.