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US 4,363,943 AGranted
Interval timer
AssigneeAMF Incorporated
InventorEgon Sorensen
Life of this patent
Estimating the term…
Abstract
An interval timer has a cross-shaped cam with elongated arms and is interposed between a slot moving disc and a micro-switch. Adjustable pins are disposed on the outer extremities of the disc and engage the inner ends of the cross-shaped cam arms. The outer ends of the arms rotate with increased velocity causing rapid momentary actuation of the switch.
Claims3
A momentary interval timer comprising
- a base plate;
- drive means mounted on one side of the said plate and having a rotatable shaft extending therefrom through said plate;
- a device to be momentarily operated being mounted on said plate on the side opposite from said drive means;
- a disc disposed on the side of said plate opposite from said drive means and connected to said shaft for rotation of said disc by said drive means;
- said disc having a plurality of holes therethrough disposed in an equally spaced series adjacent the outer periphery of said disc;
- cam means rotatably mounted between said disc and said device on the side of said plate opposite from said drive means;
- said cam means having a hub adjacent the periphery on said disc and an equally spaced series of opposed elongated arms radiating from said hub.
- said arms moving between said disc and said plate as said cam means is rotated and the free ends of said arms momentarily actuating said device as they rapidly pass thereby;
- and
- a plurality of pins selectively positioned in said holes and extending through said disc toward said plate;
- said pins being moved relatively slowly along a circular path by said rotating disc each engaging adjacent said hub the arm of said cam extending between said disc and said plate thereby rotating said cam and causing the tip of said arm opposite from said engaged arm to move relatively rapidly by and momentarily actuate said device.
8 more elements
Dependencies are inferred from the claim text.