US 5,295,934 AGranted

Barbell collar apparatus

OwnerChristopher H. Collins, Matthew M. Collinsinventors

Life of this patent

Estimating the term…

Abstract

A barbell collar includes a collar and sleeve arrangement that are telescopingly displaceable relative to one another to permit adjustment along a barbell support rod. Retractable detent spheres are mounted within the sleeve for engagement with annular grooves of the barbell to effect selective securement and positioning of the sleeve structure relative to the barbell rod.

Claims6

Dependent claims

A barbell collar apparatus, comprising,

a cylindrical bar, the cylindrical bar having a central portion and a first end spaced from a second end, and a first end portion extending from the central portion to the first end, and a second end portion extending from the central portion to the second end, and
a collar member and a sleeve mounted upon the first end portion and the second end portion for selective engagement with the first end portion and the second end portion, wherein each collar member telescopingly receives the sleeve, and
wherein the collar member includes a cylindrical collar housing, the cylindrical collar housing having a housing first end and a housing second end, and an abutment flange mounted to the housing first end, and
a collar housing resilient "O" ring mounted to the collar housing second end, and
the collar housing sleeves symmetrically oriented about a collar axis, and
detent means mounted within each sleeve for selective engagement of said cylindrical bar end a first bore having a first diameter spaced between the housing first end and the housing second end, and a second bore having a second diameter greater than the first diameter extending from the first bore to the housing first end, and a third bore extending from the first bore to the housing second end, having a third diameter greater than the second diameter, and a conical transition wall extending from the first bore to the third bore, and an annular spring flange orthogonally oriented relative to the axis positioned at an intersection of the first bore and the second bore, with the sleeve member having a cylindrical sleeve central portion slidably received through the first bore and the second bore, and the sleeve central portion having an externally threaded first end portion extending to a sleeve first end, and an internally threaded abutment cylinder threadely mounted about the externally threaded first end portion, with a spring member interposed between abutment cylinder and the spring flange, and an abutment cylinder annular flange mounted to the abutment cylinder extending laterally thereof, wherein the abutment cylinder annular flange is orthogonally oriented relative to the axis and spaced from the abutment flange of the collar member, and a sleeve member bore directed coextensively through the sleeve member to receive the cylindrical bar therethrough.

3 more elements

Dependencies are inferred from the claim text.

patentgrep

Loading patent…

Abstract

A barbell collar apparatus, comprising,

a cylindrical bar, the cylindrical bar having a central portion and a first end spaced from a second end, and a first end portion extending from the central portion to the first end, and a second end portion extending from the central portion to the second end, and
a collar member and a sleeve mounted upon the first end portion and the second end portion for selective engagement with the first end portion and the second end portion, wherein each collar member telescopingly receives the sleeve, and
wherein the collar member includes a cylindrical collar housing, the cylindrical collar housing having a housing first end and a housing second end, and an abutment flange mounted to the housing first end, and
a collar housing resilient "O" ring mounted to the collar housing second end, and
the collar housing sleeves symmetrically oriented about a collar axis, and
detent means mounted within each sleeve for selective engagement of said cylindrical bar end a first bore having a first diameter spaced between the housing first end and the housing second end, and a second bore having a second diameter greater than the first diameter extending from the first bore to the housing first end, and a third bore extending from the first bore to the housing second end, having a third diameter greater than the second diameter, and a conical transition wall extending from the first bore to the third bore, and an annular spring flange orthogonally oriented relative to the axis positioned at an intersection of the first bore and the second bore, with the sleeve member having a cylindrical sleeve central portion slidably received through the first bore and the second bore, and the sleeve central portion having an externally threaded first end portion extending to a sleeve first end, and an internally threaded abutment cylinder threadely mounted about the externally threaded first end portion, with a spring member interposed between abutment cylinder and the spring flange, and an abutment cylinder annular flange mounted to the abutment cylinder extending laterally thereof, wherein the abutment cylinder annular flange is orthogonally oriented relative to the axis and spaced from the abutment flange of the collar member, and a sleeve member bore directed coextensively through the sleeve member to receive the cylindrical bar therethrough.

3 more elements