JOHN J. JOYCE
Alcoholic Beverages Control in Weymouth, MA
License number
Massachusetts SP-LIC-005514
Issued Date
Jan 1, 2016
Expiration Date
Dec 31, 2016
Type
Salesman Permit
Address
Address
Weymouth, MA 02188
Professional information
Method Of Generating Liquid Concentration Gradients Hydrostatically
US Patent:
4188967, Feb 19, 1980
Filed:
Jan 12, 1978
Appl. No.:
5/868850
Inventors:
John E. Joyce - South Weymouth MA
International Classification:
B01F 500
US Classification:
137 1
Abstract:
A hydrostatic gradient generator has a first liquid chamber and a second liquid chamber detachably attached to a base provided with a pressure regulator. The regulator has inlets, one for each chamber and in communication with the lower end thereof with the two inlets opening into the regulator close to its upper end and at the same level to provide a pressure reference plane inclusive of the bottom of the gradient producing portion of the liquid in the second chamber. The portions of the chambers for the gradient forming volumes are of the same volumetric capacity with their cross sectional areas constantly increasing from a minimum at one end to a maximum at the other end, the minimum at the lower end of the first chamber and the maximum at the lower end of the second chamber. Means are provided to enable the first chamber to be offset vertically relative to the second chamber.
In use, advantage is taken of the fact that the pressure at a given depth in a liquid body is equal to the density of the liquid times the distance to that depth from a free surface.
Apparatus For Use In Generating Liquid Concentration Gradients Hydrostatically
US Patent:
4202370, May 13, 1980
Filed:
Jan 12, 1978
Appl. No.:
5/868853
Inventors:
John E. Joyce - South Weymouth MA
International Classification:
G05D 1103
US Classification:
137585
Abstract:
A hydrostatic gradient generator has a first liquid chamber and a second liquid chamber detachably attached to a base provided with a pressure regulator. The regulator has inlets, one for each chamber and in communication with the lower end thereof with the two inlets opening into the regulator close to its upper end and at the same level to provide a pressure reference plane inclusive of the bottom of the gradient producing portion of the liquid in the second chamber. The portions of the chambers for the gradient forming volumes are of the same volumetric capacity with their cross sectional areas constantly increasing from a minimum at one end to a maximum at the other end, the minimum at the lower end of the first chamber and the maximum at the lower end of the second chamber. Means are provided to enable the first chamber to be offset vertically relative to the second chamber. In use, advantage is taken of the fact that the pressure at a given depth in a liquid body is equal to the density of the liquid times the distance to that depth from a free surface.
Method Of And Apparatus For Use In Generating Liquid Concentration Gradients Hydrostatically
US Patent:
4074687, Feb 21, 1978
Filed:
Jun 30, 1976
Appl. No.:
5/701173
Inventors:
John E. Joyce - South Weymouth MA
International Classification:
G05D 1103
US Classification:
137266
Abstract:
A hydrostatic gradient generator has a first liquid chamber and a second liquid chamber detachably attached to a base provided with a pressure regulator. The regulator has inlets, one for each chamber and in communication with the lower end thereof with the two inlets opening into the regulator close to its upper end and at the same level to provide a pressure reference plane inclusive of the bottom of the gradient producing portion of the liquid in the second chamber. The portions of the chambers for the gradient forming volumes are of the same volumetric capacity with their cross sectional areas constantly increasing from a minimum at one end to a maximum at the other end, the minimum at the lower end of the first chamber and the maximum at the lower end of the second chamber. Means are provided to enable the first chamber to be offset vertically relative to the second chamber. As the pressure at a given depth in a liquid body is equal to the density of the liquid times the distance to that depth from a free surface, an appropriate lesser volume of liquid in the second chamber will result in initial flow from the first chamber.