Depth limiting device for a boring tool
OwnerBesarion Chanturidzeinventor
Life of this patent
Estimating the term…
Abstract
A depth limiting device for a boring tool having stop collar includes housing and a sleeve. The housing provides snap on attachment onto the stop collar, allowing for a free axial rotation of the said housing around the body of the stop collar. The housing and the sleeve have a threaded engagement for adjusting position relative to one another and thereby adjusting length of the working portion of boring tool. Coupled housing and sleeve are freely rotatable with respect to the body of the stop collar and cease to rotate when operator achieves desirable depth of drilling and the device is pressed against the work-piece surface. The structural interrelationship prevents marring of the surface of the work-piece.
Claims15
A depth limiting device for a boring tool for attachment to a drill bit or driver bit having a collar secured thereto, comprising:
- a housing, said housing having external threads, said housing having an aperture for receiving the tool bit and a portal for receiving the tool bit and the collar therein, said housing having ratchet teeth;
- and
- a sleeve having internal threads for mating with said external threads in order to removably interconnect said housing and said sleeve to enable relative rotation between said housing and said sleeve in order to adjust longitudinal length of the device and thereby travel or depth distance parameter of the stop function afforded by the device, said sleeve having a pawl for engaging a selected one of said ratchet teeth in order to retain the device in a desired position of adjustment, said sleeve having contacting portion for contacting a work-piece when the tool bit is operationally moved against the work-piece and to the stop position during operational rotation thereof to thereby enable desired stop function.
A device for attachment to a drill bit or driver bit having a collar secured thereto, comprising:
- a housing, said housing having external threads, said housing having an aperture for receiving the tool bit and a portal for receiving the tool bit and the collar therein, said housing having spring arms having detents extending into portal area for blocking vertically upward movement of the tool bit and the tool bit collar, said spring arms and said detents being radially movable so that insertion of the tool bit collar into said portal deflects said spring arms pushes said detents out of said portal to allow unimpeded entry of the tool bit collar into said portal, said spring arms having a spring force providing retraction of said detents into said portal when not subjected to a radially outward force produced by insertion of the tool bit collar in said portal;
- and
- a sleeve having internal threads for mating with said external threads in order to removably interconnect said housing and said sleeve to enable relative rotation between said housing and said sleeve to adjust longitudinal length of the device and thereby travel or depth distance parameter of stop function afforded by the device, said sleeve having contacting portion for contacting a workpiece when the tool bit is moved against the work-piece and to the stop position during operational rotation to thereby enable desired stop function.
A depth limiting device for boring tool for attachment to a drill bit or driver bit having a collar secured thereto, comprising:
- a housing, said housing having an external thread, said housing having an aperture for receiving the tool bit therein and a portal for receiving the tool bit and the collar therein, said housing having ratchet teeth, said housing having spring arms having detents located at upper end portions thereof and extending into aperture area for blocking vertically upward movement of the tool bit and the tool bit collar, said spring arms and said detents being radially movable so that insertion of the tool bit collar into the portal pushes said detents out of the portal to allow unimpeded entry of the drill collar therein, said spring arms having a spring force providing retraction of said detents into the portal when not subjected to a radially outward force produced by insertion of the drill bit collar in the portal;
- and
- a sleeve having internal threads for mating with said external threads in order to removably interconnect said housing and said sleeve to enable relative rotation between said housing and said sleeve to adjust longitudinal length of the device and thereby travel or depth distance parameter of the stop function afforded by the device, said sleeve having a pawl for engaging a selected on of said ratchet teeth in order to retain the device in a desired adjustment position, said sleeve having contacting portion for contacting a work-piece when the tool bit is moved against the work-piece and to stop position during operational rotation of the tool bit to thereby enable the desired stop function.
Dependencies are inferred from the claim text.