초록 ▼

An adapter for detachably mounting a drill bit on an extension, is described as having a button-type catch with outwardly diverging flanges, and a separate, split ring of spring steel for exerting a spring biasing force against the button catch. The button catch is seated in a recess which is formed

An adapter for detachably mounting a drill bit on an extension, is described as having a button-type catch with outwardly diverging flanges, and a separate, split ring of spring steel for exerting a spring biasing force against the button catch. The button catch is seated in a recess which is formed in the split ring. In another embodiment of the invention, the split ring is provided with a protruding finger for initially holding the button catch, so that it can be easily inserted within the bore of the drill bit extension, prior to the final positioning of the adapter within the bore.

대표청구항 ▼

An adapter which is used to detachably mount a drill bit on an extension, comprising: (a) a button-type catch which includes a button with a pair of outwardly extending flanges; (b) a C-shaped split cylindrical ring, separate from the flanged button catch, for spring loading the flanged button catch

An adapter which is used to detachably mount a drill bit on an extension, comprising: (a) a button-type catch which includes a button with a pair of outwardly extending flanges; (b) a C-shaped split cylindrical ring, separate from the flanged button catch, for spring loading the flanged button catch; and (c) means intermediate opposing marginal edges of the split ring for retaining the flanged button catch, in position, in unattached relation on the split ring, when the adapter, drill bit and extension are joined together in an assembly, the means including (i) a recess in the split ring for removably receiving the flanged button catch, and (ii) means for restraining the flanged button catch in the recess.