Lever with shifting fulcrum point

• US 20070169576A1
• Filed: 01/19/2007
• Published: 07/26/2007
• Est. Priority Date: 01/25/2006
• Status: Active Grant

• Current Assignee: Gotohti.Com Inc.
• Original Assignee: Gotohti.Com Inc.
• Inventors: Anhuf, Martin, Ophardt, Hermann
• Granted Patent: US 7,765,916 B2
• Time in Patent Office: Days
• US Class Current: 74/47
• CPC Class Codes: B05B 11/1056 comprising rotatable or articulated levers B05B11/1053 takes precedence; lever actuated piston pumps B05B11/1009; lever actuated pumps with deformable chamber B05B11/1029
• CPC Class Codes: F16H 21/44 for conveying or interconverting oscillating or reciprocating motions
• CPC Class Codes: Y10T 74/165 Driving lever with adjustable pivot point
• CPC Class Codes: Y10T 74/18232 Crank and lever

Abstract

A lever with a shifting pivot or fulcrum point such that in pivoting of the lever between a first position and a second position for at least one angular segment of such pivoting about a first fulcrum point and for a second angular sector of such pivoting, pivots about a second fulcrum point.

Claims

1. A lever having two ends and pivotable about a fulcrum member in which during which pivotal movement in a first direction, the lever pivots during a first angular sector of pivoting about a first pivot point and during a second angular segment of pivoting about a second pivot point spaced from the first pivot point.

2. A lever as claimed in claim 1 wherein intermediate the first angular segment and the second angular segment, a position of the lever exists in which the lever is in engagement with the fulcrum simultaneously at both pivot points and at which position one end of the pivot moves from following an arcuate path about the first pivot point to an arcuate path about the second pivot point.

3. A lever as claimed in claim 2 wherein in pivoting of the lever through a third angular segment, a shoulder surface on the lever rolls in rolling engagement relative to a surface on the fulcrum member to move the first end of the lever relatively away from the fulcrum member as compared to an arcuate path of one of the pivot points.