Christopher Charles Fitch

US Patent:

20070110543, May 17, 2007

Filed:

Nov 11, 2006

Appl. No.:

11/595773

Inventors:

Christopher Milton Fitch - Arlington MA, US

International Classification:

F16B 25/00

US Classification:

411386000

Abstract:

A threaded fastener with unique tamperproof and decorative qualities comprised of a cylindrical body with helical threads () in combination with a non-torqueable head () at one end and a torqueable access located on the tail, or insertion, end (). The lack of a drive access in the head of the screw creates a tamperproof surface which can be treated decoratively (), ground, polished, or painted. Although tamperproof from the head side of the screw, standard torqueable access in the tail end makes the screw nevertheless easy to remove for servicing.

US Patent:

20200326060, Oct 15, 2020

Filed:

Apr 10, 2020

Appl. No.:

16/845635

Inventors:

Christopher Fitch - Arlington MA, US

International Classification:

F21V 21/28
F21V 21/06

Abstract:

A versatile positionable task lamp includes a base, a first arm extending from the base and rotatable about its own axis, a second arm connected with the first arm by a first joint which enables the second arm to rotate about its own axis and rotate about an axis of the first joint, a third arm connected with the second arm by a second joint which enables the third arm to rotate about its own axis and rotate about an axis of the second joint, a lighting element connected with the third arm by a third joint which enables the lighting element to rotate about an axis of the third joint, and a plurality of counterweights disposed on the second and third arms in a way that two masses respectively extending from two opposite sides of anyone of the first and second joints are counterweighted by each other.