Darwin N Sletten
Engineers at Tennyson Pl, Westminster, CO
License number
Colorado 23311
Issued Date
Mar 8, 1985
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
11023 Tennyson Pl, Westminster, CO 80031
Personal information
See more information about Darwin N Sletten at radaris.comName
Address
Phone
11023 Tennyson Pl, Westminster, CO 80031
11023 Tennyson Pl, Westminster, CO 80031
11023 Tennyson Pl, Denver, CO 80202
Professional information
Low Impedance Grounding Electrode With Universal Connections And Rapid Access Cap
US Patent:
7462776, Dec 9, 2008
Filed:
Jun 1, 2007
Appl. No.:
11/757201
Inventors:
Peter Carpenter, legal representative - Boulder CO, US
Nathan M. Mascarenas - Windsor CO, US
Darwin N. Sletten - Westminster CO, US
Nathan M. Mascarenas - Windsor CO, US
Darwin N. Sletten - Westminster CO, US
Assignee:
Lightning Eliminators & Consultants, Inc. - Boulder CO
International Classification:
H05K 5/02
US Classification:
174 51, 174 5, 174 6, 174 7, 174 40 CC, 439 92, 361753
Abstract:
An all stainless steel grounding electrode uses a coating of stainless steel for an upper collar which has a dual purpose cable connector. The cable connector can accommodate a cable lug and bolt connection or a cad weld connection. A cap for the collar has a one quarter turn dual heavy duty thread set to prevent corrosion from locking up the cap. An osmotic material is placed and replaced in the grounding electrode via the cap.
Low Impedance Grounding Electrode With Universal Connections And Rapid Access Cap
US Patent:
RE42331, May 10, 2011
Filed:
Feb 26, 2010
Appl. No.:
12/714245
Inventors:
Peter Carpenter, legal representative - Longmont CO, US
Nathan M. Mascarenas - Windsor CO, US
Darwin N. Sletten - Westminster CO, US
Nathan M. Mascarenas - Windsor CO, US
Darwin N. Sletten - Westminster CO, US
Assignee:
Lightning Eliminators & Consultants, Inc. - Boulder CO
International Classification:
H05K 5/02
US Classification:
174 51, 174 40 CC, 174 6, 174 7, 439 92, 361753
Abstract:
An all stainless steel grounding electrode uses a coating of stainless steel for an upper collar which has a dual purpose cable connector. The cable connector can accommodate a cable lug and bolt connection or a cad weld connection. A cap for the collar has a one quarter turn dual heavy duty thread set to prevent corrosion from locking up the cap. An osmotic material is placed and replaced in the grounding electrode via the cap.
Grounding System For Floating Roofs In Flammable Storage Tanks
US Patent:
7078621, Jul 18, 2006
Filed:
Jan 25, 2001
Appl. No.:
09/769670
Inventors:
Darwin N. Sletten - Westminster CO, US
Assignee:
Lightning Eliminators & Consultants, Inc. - Boulder CO
International Classification:
H05K 5/02
US Classification:
174 51, 174 59, 174 60, 174 40 CC, 439 98
Abstract:
Lightning at or near the site of an oil storage tank can cause a charge build up in the tank. This charge must be discharged to ground at rapid speeds to prevent arcing, sparks and fire. The tank has a metal floating roof which can be used to discharge the charge to ground by connecting a low impedance braided wire to the floating roof, and then connecting the wire to a take up reel at the top rim of the tank. The take up reel keeps any slack out of the wire. The path to ground is liquid to floating roof, to braided wire, to take up reel, to wall of tank, to earth ground.