Robert L Irwin

US Patent:

20110271485, Nov 10, 2011

Filed:

May 5, 2011

Appl. No.:

13/102035

Inventors:

Robert F. Irwin - Alpharetta GA, US

International Classification:

E05D 11/04
E05D 11/00
E05F 1/12

US Classification:

16275, 16277, 16308, 16307

Abstract:

A control motion hinge, comprising a first leaf hinge with three knuckles to secure a first pin, wherein the two outer knuckles have roller knuckles, a link having a two knuckles on a first end to interlock with the first leaf hinge and a single knuckle on a second end, a second leaf hinge with two knuckles to secure a second pin when interlocked with the second end of the link, wherein the two knuckles of the second leaf hinge have a roller path for engaging the roller of the first leaf hinge, wherein such rollers traverse the roller path, a first spring device positioned between said first leaf hinge and said link to apply a force therebetween, and thus softly closing the door reducing the sound of closure during the final approach of the door.

US Patent:

41061500, Aug 15, 1978

Filed:

Oct 25, 1977

Appl. No.:

5/844891

Inventors:

Robert M. Irwin - Long Beach CA

International Classification:

E01D 100

US Classification:

14 713

Abstract:

There is disclosed a loading platform mounted cantileverally from a vertical spindle carried from a walkway, such mounting being by means of a horizontally extending pivot for rotation of such ramp from a lowered position extending over a loading station to an elevated retracted position adjacent the walkway. A locater is mounted on the swing post for selectively controlling ramp positioning to various angular locations. A ramp extension is slidably mounted for longitudinal extension from the ramp itself. The ramp is counterbalanced to be normally urged to its elevated and retracted position.