Drive in tapping attachments
AssigneeTapmatic Corporation
InventorAllan S. Johnson
Life of this patent
Estimating the term…
Abstract
In self-reversing tapping attachments improved ball drive means are connectable to source of rotational drive and drive transmitting means are engagable, with the drive means including at least one driving ball member and with the drive transmitting means defining at least one slot for the ball member, which slot includes a ramp section inclined so that upon engagement between the drive means and the ball member the latter travels upwardly thereby cushioning impact between the drive means and the drive transmitting means. A radially extending member on a tap holder member has a radius of curvature less than the radius of curvature of contact members of the drive transmitting means to cushion impact.
Claims10
In a self-reversing tapping attachment, the improvement comprising:
- drive means connectable to a source of rotational drive;
- and
- drive transmitting means engagable with said drive means and including at least one driving ball member, said drive transmitting means defining at least one slot for said at least one ball member, said slot including a ramp section inclined such that on engagement between said drive means and said at least one ball member, said ball member is urged upwardly in a direction toward the said source of rotational drive, whereby impact between said driving means and said drive transmitting means is cushioned.
The invention as set forth in claim further including holding means for holding a tap, said means for holding a tap comprising an axially extending member carrying at least one substantially radially extending member for engaging with contact means carried by said drive transmitting means.
An improvement in tapping attachments utilizing ball drive comprising:
- driving means connectable to a source of rotational drive;
- drive transmitting means engagable in driving engagement with said driving means, said drive transmitting means including at least one driving ball member for driving engagement with said driving means;
- tap holding means engagable in driving engagement with said drive transmitting means, said tap holding means including at least one extending member for driving contact with said drive transmitting means such that driving contact will be at two or more points, said at least one driving ball member being movable on inclined means upon driving contact such that driving contact between said at least one ball member and said driving means is cushioned.
Dependencies are inferred from the claim text.