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US 4,072,919 AGranted
Solenoid construction
AssigneeAddmaster Corporation
InventorJohn G. Clary
Life of this patent
Estimating the term…
Abstract
A solenoid having reduced noise and jarring characteristics which includes a small shock absorbing sphere of rubber or other elastomeric material freely mounted between the solenoid armature and a stationary core piece of the solenoid so as to be engaged and compressed by the armature at the end of its travel.
Claims5
A solenoid comprising a bearing sleeve, a stop element of magnetic material in said sleeve adjacent one end of said sleeve,
- said stop element forming a first flat sphere engaging surface,
- an armature of magnetic material slidable endwise within said sleeve adjacent the opposite end of said sleeve,
- said armature forming a second flat sphere engaging surface,
- means for inducing magnetic flux between said stop element and said armature whereby to attract said armature towards said stop element, and
- a shock absorbing sphere of elastomeric material within said sleeve intermediate said armature and said stop element,
- said sphere being freely mounted between said armature and said stop element and being compressible between said first and second sphere engaging surfaces whereby to arrest said armature,
- said sphere engaging surfaces being parallel to each other and at right angles to the direction of movement of said armature.
4 more elements
A solenoid comprising a bearing sleeve,
- a stop element within said sleeve adjacent one end of said sleeve,
- said element having a first flat sphere engaging surface,
- an armature of magnetic material slidable lengthwise within said sleeve adjacent the opposite end of said sleeve,
- said armature having a second flat sphere engaging surface,
- an electromagnetic coil surrounding said sleeve and effective upon energization thereof to develop a magnetic flux to attract said armature towards such stop element,
- and a shock absorbing sphere of elastomeric material within said sleeve intermediate said first and second sphere engaging surfaces,
- said sphere being compressible between said stop element and said armature whereby to arrest said armature,
- said sphere engaging surfaces being parallel to each other and at right angles to the direction of movement of said armature.
5 more elements
An actuator comprising
- means comprising a cylindrical slide bearing,
- said bearing being open at one end and closed at the opposite end,
- said closed end of said bearing having a sphere engaging surface,
- a plunger slidable in said bearing,
- means for moving said plunger towards said closed end,
- said plunger having a second sphere engaging surface,
- means actuated by said plunger upon movement thereof to a location adjacent said closed end for performing a control function,
- a shock absorbing sphere of elastomeric material intermediate said sphere engaging surfaces,
- said sphere being freely mounted within said bearing and compressible between said sphere engaging surfaces whereby to arrest said plunger after said plunger reaches said location,
- said sphere engaging surfaces being planar, and
- said sphere engaging surfaces being parallel with each other and extending at right angles to the direction of movement of said plunger.
8 more elements
Dependencies are inferred from the claim text.