Replaceable nose member for chain saw guide bars
AssigneeBlount, Inc.
InventorsGabriel Carro, Karl Erik Forsberg, Karl Olov Petterson, Larry Flowers, Paul E. Wade
Life of this patent
Estimating the term…
Abstract
A chainsaw guide bar includes a bar body and a nose member removably attached to the bar body by an elastic snap-in coupling, eliminating the need for separate fastening elements. The snap-in coupling includes dimples formed in tongues of the nose member, the dimples being received in holes formed in a web of the bar body. The dimpled portions of the tongues are elastically flexible in a thickness direction of the guide bar to enable the nose member to be inserted or removed.
Claims20
Chainsaw guide bar comprising a guide bar body and a replaceable nose member, the nose member having two rearward tongues spaced apart in a thickness direction of the nose member, and the body having a web which fits between the tongues, wherein the nose member is held in place by an elastic snap-in coupling, the snap-in coupling comprising spring portions defined by indentations formed in respective ones of the tongues and projecting toward the web, the web including a cut-out arrangement for receiving the indentations, wherein the spring portions are elastically flexible in the thickness direction for enabling the indentations to be slidable into place and out of place without adding or removing any fastener element.
Chainsaw guide bar comprising a guide bar body and a replaceable nose member, the nose member having two rearward tongues spaced apart in a thickness direction of the nose member, and the body having a web which fits between the tongues, the nose member defining a longitudinal center axis, wherein the nose member is held in place by an elastic snap-in coupling, the elastic snap-in coupling comprising a set of dimples formed in each of the tongues and projecting toward the web, the web including holes arranged to receive the dimples, each set of dimples comprising dimples disposed on respective sides of the axis, the dimples being elastically flexible in the thickness direction to permit the nose member to be slidable into place and out of place.
Chainsaw guide bar comprising a guide bar body and a replaceable nose member, the nose member having two rearward tongues spaced apart in a thickness direction of the nose member, and the body having a web which fits between the tongues, wherein the nose member is held in place by an elastic snap-in coupling between elastically deformable spring portions of one of the members and rigid portions of the other member, wherein the nose member is slidable into place and out of place without adding or removing any fastener element, there being a space formed between a rear end of the nose member and the guide bar body for receiving a prying tool.
A nose member for a chainsaw guide bar, comprising a pair of plates secured together, with a rotatable sprocket wheel mounted between the plates, the nose member defining a longitudinal center axis, each plate including a tongue having a plurality of dimples formed therein on opposite sides of the axis, the tongues arranged in spaced apart superimposed relationship, with the dimples of each tongue projecting toward the other tongue.
Dependencies are inferred from the claim text.