Connecting pin clip
AssigneeWagner Spray Tech Corporation
InventorWarren J. Walsh
Life of this patent
Estimating the term…
Abstract
A connecting pin clip for retaining a solid cylindrical connecting pin in aligned transverse bores in a driving member and paint pump piston, formed out of stainless steel spring wire and having a linear mediate portion connected to two end portions, each of which have a linear section extending generally perpendicularly away from the mediate portion and ending in opposed convex shapes. The clip is resiliently deformable for installation and removal over a portion of the driving member to retain the pin by engagement of the ends of the clip with the ends of the pin which are preferably recessed from the ends of the bore in the driving member.
Claims14
A clip for connecting a paint pump piston to a reciprocating driving member via a connecting pin slideably received in aligned transverse bores in the piston and driving members the clip comprising a wire member having a resilient mediate portion and first and second end portions connected together by said mediate portion wherein at least one of said first and second end portions has a convex shape facing the other of said first and second end portions, and further wherein the first and second end portions are spaced apart a predetermined distance slightly less than a length of the connecting pin and the mediate portion is sized to encompass the piston and driving member and retain the connecting pin in the aligned transverse bores of the piston and driving member.
A method of retaining a paint pump piston to a reciprocating driving member comprising the steps of:
- a. receiving an end of a piston in a mating end of a driving member where the ends of the piston and driving member each have a transverse bore therethrough;
- b. aligning the transverse bore of the piston with the transverse bore of the driving member;
- c. inserting a connecting pin into the aligned transverse bores of the piston and driving member;
- and
- d. moving a resilient clip adjacent the connecting pin such that the pin is retained in the transverse bores by the resilient clip wherein the clip is a wire member having a resilient mediate portion and first and second end portions connected together by said mediate portion and further wherein at least one of said first and second end portions has a convex shape facing the other of said first and second end portions, and still further wherein the first and second end portions are spaced apart a predetermined distance slightly less than a length of the connecting pin and the mediate portion is sized to encompass the piston and driving member and retain the connecting pin in the aligned transverse bores of the piston and driving member.
A connecting pin clip for securing a connecting pin between aligned transverse bores in a paint pump piston and driving member, the clip comprising a resilient wire member having:
- a. a generally linear mediate portion;
- and
- b. first and second end portions each connected at opposite ends of the mediate portion and each having a generally arcuate curve at the tip thereof
- wherein the mediate portion is sized to generally match the combined width of the piston and driving member and further wherein each of the first and second end portions project away from the mediate portion a distance sufficient for the arcuate curves to be received in the aligned transverse bores in the piston and driving member to retain the pin therein.
In a piston pump assembly of the type having a reciprocating driving member and a piston for pumping paint wherein the driving member is connected to the piston via a connecting pin received in aligned transverse bores in the driving member and piston, the improvement in combination therewith comprising a wire clip member having a mediate portion and first and second end portions connected together by said mediate portion and wherein at least one of the end portions has a projection directed towards the other end portion and further wherein the first and second end portions are spaced apart a predetermined distance sufficient to at least partially encompass the piston and driving member and retain the connecting pin in the aligned transverse bores thereof and wherein the driving member surrounds the piston and further wherein the driving member has two opposed flat sides, each perpendicular to the bore therethrough.
Dependencies are inferred from the claim text.