Adapter for injecting viscous material into small openings and cavities
OwnerWilliam E. Shultz, Sr.inventor
Life of this patent
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Abstract
A device for lubricating bearings and the like including a housing for containing a lubricant, and a movable piston adapted to be inserted into the housing in contact with said lubricant. The piston includes an upper concave surface, for communication of the lubricant with a bearing to be lubricated, and a passage for flow of lubricant. Compression of the piston against the lubricant causes flow of lubricant from below the piston to above the piston. An adapter, or volume-filling means, is disposed on the upper piston surface for filing a portion of a volume defined between the upper, concave piston surface and the wheel bearing. The volume-filling means includes lubricant flow passages for allowing lubricant to flow from said upper concave piston surface to the wheel bearing.
Claims16
In a device for lubricating a bearing including a housing for containing a lubricant, a movable piston adapted to be inserted into the housing in contact with said lubricant, said piston including an upper concave surface for communication of said lubricant with said bearing to be lubricated, said piston including a passage for flow of said lubricant, such that compression of said piston against said lubricant causes flow of said lubricant from below said piston to above said piston, the improvement comprising:
- volume-filling means for filling a portion of a volume defined between said upper, concave piston surface and said bearing, said volume-filling means having an outer convex surface shaped complementary to the upper concave surface of said piston and disposed on said upper concave surface of said piston.
An apparatus for lubricating wheel bearings comprising:
- a receptacle for containing a lubricant, said receptacle including a floor, a cylindrical wall extending upwardly from said floor, and an open top defined by an upper edge of said cylindrical wall;
- a volume of lubricant contained within said receptacle;
- a piston inserted into said receptacle from said open top, said piston disposed in contact with said lubricant and slidably mounted within said receptacle in sealing contact with an inner surface of said cylindrical wall, said piston including a passage for flow of said lubricant from an undersurface of said piston to an upper, concave surface of said piston when said piston is compressed against said lubricant;
- means for compressing said piston against said lubricant;
- and,
- volume-filling means for filling a portion of a volume defined between said upper, concave piston surface and said wheel bearing, said volume-filling means disposed on said upper concave surface of said piston and including lubricant flow means for allowing lubricant to flow from said upper concave piston surface to said wheel bearing, said volume filling means having an outer convex surface shaped complementary to said concave upper piston surface for sealing contact of said volume filling means against said upper piston surface.
In a method of applying a lubricant to a bearing comprising inserting said bearing into a lubricant chamber to seal an outer peripheral surface of said bearing against an upper frusto-conical surface of a piston member disposed within said lubricant chamber, the improvement comprising:
- sealing an inner peripheral surface of said bearing by engaging a lower peripheral surface of said bearing against a tapered volume-filling means for filling a portion of a volume defined between said upper, frusto-conical surface of said piston and said wheel bearing, said volume-filling means having an outer convex surface shaped complementary to the upper surface of the piston member and disposed on said upper surface of said piston member;
- compressing a compression member against an upper surface of said bearing to force said piston against lubricant held in said chamber so that said lubricant is forced upwardly into a lubricant receiving aperture in said piston, along an exterior, piston-contacting surface of said volume-filling means and into contact with said bearing.
Dependencies are inferred from the claim text.