Patent FR439792A successfully refreshed from Google Patents.
Patent US5078552A successfully refreshed from Google Patents.
US5078552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide/drill stop for regulating drill depth
Assignee: Individual
•
Filing: 1991-03-19
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Granted: 1992-01-07
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Expires: 2011-03-19
Abstract
Abstract A guide/drill stop in the form of a hollow one-piece cylindrical sleeve for frictional engagement with a cutting tool, e.g., a drill bit, to regulate the desired depth of a hole to be drilled. The guide/drill stop sleeve extends optionally over the portion of the shank of the drill bit inserted into the collet or chuck of the machine or drill to enable the collet or chuck to secure the positioning of the drill stop during drilling. Alternatively, in another embodiment, the guide/drill stop sleeve may cover only a portion of the drill bit such that the sleeve does not encompass the section of the shank of the drill bit received into the collet or chuck of the particular machine or drill. In general a drill stop, constructed of various materials in various lengths and diameters, to enable precise regulation of drilled holes of varying depth is provided.
Inventors
- 👤 Frank O. Albel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:52
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/003; B23B49/005; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/55; Y10T408/566; Y10T408/89; Y10T408/892; Y10T408/8925; Y10T408/96; Y10T408/99
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
A cutting tool stop, comprising: a cylindrical sleeve portion for fitting snugly over a cutting tool, said sleeve portion having an external shoulder; a tubular collar portion fitted over said sleeve portion and having an internal shoulder engaging said external shoulder; and a retaining means within said collar portion and coacting with said sleeve portion so as to allow relative rotation between said collar portion and said sleeve portion and prevent relative axial movement therebetween.
Claim 2
Dependent Claim
75 words
A cutting tool stop, comprising: a cylindrical sleeve portion for fitting snugly over a cutting tool, said sleeve portion having an external shoulder; a tubular collar portion fitted over said sleeve portion and having an internal shoulder engaging said external shoulder; and a retaining means within said collar portion and coacting with said sleeve portion so as to allow relative rotation between said collar portion and said sleeve portion and prevent relative axial movement therebetween.
Claim 3
Dependent Claim
22 words
The cutting tool stop of claim 1 wherein said sleeve portion is frictionally retained on a shank portion of a cutting tool.
Claim 4
Dependent Claim
14 words
The cutting tool stop of claim 1 wherein said sleeve has a predetermined length.
Claim 5
Dependent Claim
27 words
The cutting tool stop of claim 1 wherein said sleeve is received by and gripped by a collet of a three jaw chuck on a drilling tool.
Claim 6
Dependent Claim
53 words
The cutting tool stop of claim 4 wherein said sleeve portion is produced from a material selected from the group consisting of elastomers, thermoplastics, and metals, wherein said material allows for the construction of said sleeve portion to provide sufficient static friction for mechanical gripping to a cylindrical surface of a cutting tool.
Claim 7
Dependent Claim
20 words
A cutting tool stop according to claim 5 wherein said sleeve portion is produced from an elastomer or thermoplastic material.
Claim 8
Dependent Claim
17 words
A cutting tool stop according to claim 6 wherein said sleeve portion is produced from a metal.
Claim 9
Independent Claim
133 words
A method of drilling holes to a predetermined depth in a workpiece, using a cutting tool having a shank for insertion into a collet of a machine and a section having cutting means thereon projecting from one end of said shank, further comprising a stop including a hollow cylindrical sleeve received on said shank and frictionally retained thereon, wherein said stop has a predetermined length, the method including the steps of: placing the stop on the shank; initiating drilling of the hole; allowing a foremost end of the stop to engage the workpiece; continuing drilling of the hole such that the stop slides on the shank until an opposite end of said stop engages said collet; whereby the intrusion progress of said cutting means is arrested by said foremost end of the stop.
Claim 10
Independent Claim
133 words
A method of drilling holes to a predetermined depth in a workpiece, using a cutting tool having a shank for insertion into a collet of a machine and a section having cutting means thereon projecting from one end of said shank, further comprising a stop including a hollow cylindrical sleeve received on said shank and frictionally retained thereon, wherein said stop has a predetermined length, the method including the steps of: placing the stop on the shank; initiating drilling of the hole; allowing a foremost end of the stop to engage the workpiece; continuing drilling of the hole such that the stop slides on the shank until an opposite end of said stop engages said collet; whereby the intrusion progress of said cutting means is arrested by said foremost end of the stop.
Claim 11
Dependent Claim
61 words
The method according to claim 8 wherein said sleeve includes a collar pivotally attached to a neck section of said sleeve, wherein said neck section engages said shank of said drill bit and said pivotal collar will rotate during drilling and when said end section of said collar contacts the surface of the material being drilled at the predetermined drilling depth.
Claim 12
Dependent Claim
52 words
The method of claim 8 wherein said sleeve is produced from a material selected from the group consisting of elastomers, thermoplastics and metals where said material allows for the construction of said sleeve to provide sufficient static friction for mechanical gripping action upon the surface of the shank of said drill bit.
Claim 13
Dependent Claim
44 words
The method of claim 8 wherein said sleeve is reproduced in various lengths to allow for the precise predetermination of the depth of holes to drill with said drill bit and is reproduced into various diameters to accommodate for the various size drill bits.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |