Solid material comminution or disintegration – Apparatus – Bottle breakers
Reexamination Certificate
1998-09-18
2001-01-23
Rosenbaum, Mark (Department: 3725)
Solid material comminution or disintegration
Apparatus
Bottle breakers
C241S101780, C241S301000
Reexamination Certificate
active
06176444
ABSTRACT:
TECHNICAL FIELD
This invention is in the general field of a lifting device for an on-site glass receptacle hammermill that fits on top of a receptacle, for example, a 55-gallon drum.
BACKGROUND OF THE INVENTION
Glass bottle hammermills and/or grinders have usually been self-contained units that incorporated the grinding and/or crushing area along with a self-enclosed collection area for the receiving and storing of the glass cullets. The relevant art as shown in U.S. Pat. Nos. 5,350,120; 5,328,106; 5,310,122; 5,289,980; 5,226,606; 5,242,126; 5,215,265; 5,186,403; 5,184,781; and 5,150,844 bear this out. In addition, patent application Ser. No. 08/730,820, of which this patent application is an extension to, is also a completely self-contained hammermll crushing unit.
Previous inventions and all the prior art in this field have not addressed the configuration of a receptacle or drum top crusher or hammermill that incorporates any means for lifting the crushing or hammermill mechanism. Previous art shows that any receptacle or drum top hammermill requires manual lifting as the elevation means for placing the unit on top of the drum. In addition to the difficulty in lifting the weight of a crusher or hammermill to drum top height, there are some other problems such as having a safe and effective means to ensure that the unit will not operate unless there are safety devices in place and activated in an effective, economical and safe manner.
Thus, this invention addresses the problem of lifting the crusher or hammermill unit in an effective, economical and safe manner so the device as described in patent application Ser. No. 08/730,820 can be utilized in the capacity of a drum top hammermill and the drum receptacle is the collection, storage and transportation vessel.
SUMMARY OF THE INVENTION
Described herein is an apparatus and method for lifting a crusher or hammermill so as to place in on top of a collection, storage and transportation vessel such as a 55-gallon drum. A crusher or hammermill device can weigh upwards of 200 pounds. This makes the utilization of a receptacle or drum top hammermill device difficult for use in many areas, especially in areas where the users cannot lift in excess of 75 pounds without other mechanical assistance.
This apparatus is a spring balanced lift mechanism that comprises four pistons rods attached to a frame or lift carriage at the bottom comprising four wheels that can be locked into position for units that are determined to be necessary as transportable. If the unit is to be stationary, the wheels are not necessary as the unit would be permanently affixed to the floor. The upper frame is attached to the crusher or hammermill. The expansion springs are affixed on the piston rods between the lower frame and the upper frame by means of an enlarged cylindrical housing at the top of the piston rod within which the expansion spring is situated and attached. The expansion springs allow the user to move the crusher or hammermill device upward with minimal difficulty due to the device's weight. The piston rods have latch pin holes selectively located so latch pins on each enlarged cylindrical housings can be engaged by means of a release latch lever so that the hammermill device can be locked into an open, or at a height that would allow the 55-gallon receptacle to be inserted or removed, an operation height that would lock the hammermill onto the top of a 55-gallon receptacle for the safe operation of the device, and into a down or stored position where the hammermill device is situation near or on the upper flanges of the lower lift carriage frame.
Permanent handles are attached to the enlarged cylindrical housings to give the user the leverage required to lift, along with the mechanical advantage of the lift springs, when the hammermill device is being elevated to either insert or remove a receptacle (55-gallon drum) from the crushing area of the device.
The piston rod latch pins are attached by means of a fixed pivot with a front and rear latch pin assembled thereto so as when the latch lever is engaged, the front and rear latch pins are disengaged from the piston rod latch pin holes and the hammermill device can be lifted or lowered mechanically assisted by the expansion lift springs.
The dual cylindrical shapes of the flange areas below the hammermill break area is manufactured so as to allow the inner and outer flanges to fit within the opening of a 55-gallon drum receptacle. A electronic relay is situated within the two flanges so the top of the 55-gallon drum receptacle engages the electronic relay when the hammermill device is lowered onto the 55-gallon drum receptacle and the unit is properly in place and safe to operated.
REFERENCES:
patent: 4979683 (1990-12-01), Busdeker
patent: 5124126 (1992-06-01), Ripp
patent: 5620146 (1997-04-01), Lukas
patent: 5743473 (1998-04-01), Gregg
patent: 5833151 (1998-11-01), Doak
Buskop Wendy K.
Buskop Law Group PC
Rosenbaum Mark
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