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David M. McDonald Patents
Inventor:
McDonald; David M.
Address:
Camdenton, MO
No. of patents:
7
Patents:




Patent Number Title Of Patent Date Issued
6948650 Dross removal and solder reclamation improvements September 27, 2005
When dross is removed from a molten-solder reservoir, a substantial amount of molten solder is often removed with the dross. This molten solder can be separated from the dross and returned to reservoir via a conduit for reuse. Additionally, a skimmer for removing the dross from the reser
6883681 Automatic dispensing system for unit medicament packages April 26, 2005
A storage and dispensing system (10) for storing and dispensing pre-packaged pharmaceutical products (12) and other products. The system includes a cabinet (14); a plurality of product conveyors (16) mounted within the cabinet and each configured for holding at least one product; an
6666370 Solder-dross mixture separation method and apparatus December 23, 2003
The invention provides an apparatus that separates solder from solder dross, comprising first and second rolls and a fixture. The first roll has a substantially cylindrical surface and is rotatable about a first longitudinal axis. The second roll has a substantially cylindrical surface
6592017 Automatic dross removal apparatus and method July 15, 2003
An automatic dross removal apparatus, which can be used with a solder wave apparatus, is provided, that generally includes a reservoir having a cavity for containing liquid solder, dross removal apparatus having a first end extending within the cavity of the reservoir for removing dross
4293978 Poultry head pulling apparatus October 13, 1981
In the processing of poultry, the heads are separately and individually pulled downwardly along a vertical path during continuous advancement to automatically separate the heads from the necks at the jaw bone and at the base of the skull, salvaging all of the edible neck skin, while at t
4217678 Poultry picking machine August 19, 1980
The machine has two laterally separated banks of pickers located on opposite sides of the path of travel of poultry carcasses conveyed through the machine. Each bank includes three horizontally extending lines of rotary pickers set in spaced opposition to the corresponding lines of p
4175302 Sealed feather picking unit November 27, 1979
A rotary picking unit has its drive shaft journaled by bearings that must be sealed against exposure to moisture and the escape of lubricant. A housing which contains the bearings is fitted at its open end with an annular seal that is disposed outwardly adjacent the bearings in surro


 
 
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