David A. Johnson
Engineering in Metairie, LA
License number
Louisiana EI.0014118
Issued Date
Jan 1, 1900
Category
Civil Engineer
Address
Address
PO Box 7715, Metairie, LA 70010
Organization information
See more information about David A. Johnson at bizstanding.comDavid Johnson
3730 Bauvais St, Metairie, LA 70001
Status:
Inactive
Industry:
Business Services at Non-Commercial Site, Nonclassifiable Establishments
Professional information
Conveyor System For Chilling Food Products
US Patent:
5377492, Jan 3, 1995
Filed:
Jan 3, 1994
Appl. No.:
8/176964
Inventors:
Thomas W. Robertson - Metairie LA
David A. Johnson - Metairie LA
David A. Johnson - Metairie LA
Assignee:
The Laitram Corporation - Harahan LA
International Classification:
F25D 1306, F25D 1702
US Classification:
62 63
Abstract:
Food product chilling apparatus is afforded herein comprising an elongated water tank and a modular movable belt conveyer unit that carries warm food products through water for chilling. A superstructure and hoist system lifts the conveyor unit out of the water for servicing. Cooling water is recirculated and rechilled in a cooling method that controls the temperature of the efflux water from the cooling tank. The influx chilling water is distributed in a plurality of parallel flow paths incrementally chilling the product at various stations along the conveyor belt path to reduce the average cooling time for the processed products. By standardizing the efflux water temperature at the various stations at a few degrees Fahrenheit above the influx water, a thermally efficient cooling system is provided. Each of the cooling stations is provided with weir height control means to optimize the cooling rate along the length of the conveyor belt. By transverse flow of chilling water across the conveyor belt path, a turbulence is created that further accelerates cooling of the product.
Apparatus And Method For Continuous High-Volume Steam Cooking
US Patent:
5410951, May 2, 1995
Filed:
Nov 2, 1993
Appl. No.:
8/145813
Inventors:
Brent A. Ledet - Metairie LA
David A. Johnson - Metairie LA
David A. Johnson - Metairie LA
Assignee:
The Laitram Corporation - Harahan LA
International Classification:
A23L 300, A23N 1200, A47J 2716
US Classification:
99443C
Abstract:
An improved apparatus and method for uniformly cooking thick layers of food product in a saturated steam environment. A foraminous conveyor belt transports a thick layer of food product into a walled cooking chamber open at its ends. The walls trap pure saturated steam to the exclusion of air in the upper region of the chamber. A pressurized source of cooking energy supplies steam through a network of steam pipes situated just below the level of the belt along its carryway through the upper region of the cooking chamber. The pipes, which span the width of the conveyor belt, include small, restricted openings uniformly distributed along the pipes. The openings form steam outlets. The pipes are oriented with the steam outlets facing the conveyor belt. Saturated steam is emitted through the outlets directed through the foraminous conveyor belt at a velocity great enough to penetrate the thick product layer to cook even the innermost product within the thick layer, thereby improving the uniformity of the cook. The thick product layer slows the steam as it penetrates the layer to prevent the formation of turbulent flow paths that could draw unwanted air into the 212. degree. F.
Costume
US Patent:
D283172, Apr 1, 1986
Filed:
Jun 14, 1982
Appl. No.:
6/388444
Inventors:
David Johnson - Metairie LA
US Classification:
D 2 79