Patent US3853420A successfully refreshed from Google Patents.
US3853420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric hand drill accessory
Assignee: Individual
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Filing: 1973-06-06
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Granted: 1974-12-10
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Expires: 1993-06-06
Abstract
Abstract A portable electric drill stand and guide has a base with a handle removably carried on a post intermediate the ends of the base and a tall post secured into an opening forwardly of the handle. A yoke slidable on the post carries a flexible clamping band in which the drill is clamped, and the arrangement enables adjustment to bring a drill bit in the drill into parallelism with a long post. Bolt holes in the base enable it to be removably fixed to a work table or to the horizontal leg of an angle bar for holding the stand in a vise. The angle bar also has a work-supporting table thereon. The taller post may be removed and its threaded end secured to an arm pivoted on a bracket to swing in a vertical arc while the bracket is then fixed on the base in the same hole as that from which the taller post was removed by a bolt which provides a pivot about which the bracket may be rotated in a horizontal arc and releasably held in a selected position.
Inventors
- 👤 A Abell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0042; Y; Y10; Y10T; Y10T408/00; Y10T408/18; Y10T408/55; Y10T408/561; Y10T408/5612; Y10T408/5626; Y10T408/564
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
171 words
An electric hand drill-holding and guiding accessory comprising: a. a base panel; b. a post on the base panel; c. means for slidably supporting an electric drill on the post comprising an adjustable band arranged to be clamped about an electric hand drill; d. an internally-threaded element secured to the band; e. a slide member slidably and rotatably fitted on the post comprising a yoke having opposite end portions through which the post extends joined by a longitudinally-slotted curved connecting portion at one side oF the post which passes through the said end portions, and f. a bolt passing through the slot in said connecting portion and screwed into said internally-threaded element on the band whereby the drill-holding clamp is adjustably fixed on said curved connecting portion for movement in an arc such that the lower end of a drill bit in the electric hand drill may be adjusted toward or away from the post and the electric hand drill also adjusted in an arc about said bolt as a pivot.
Claim 2
Dependent Claim
171 words
An electric hand drill-holding and guiding accessory comprising: a. a base panel; b. a post on the base panel; c. means for slidably supporting an electric drill on the post comprising an adjustable band arranged to be clamped about an electric hand drill; d. an internally-threaded element secured to the band; e. a slide member slidably and rotatably fitted on the post comprising a yoke having opposite end portions through which the post extends joined by a longitudinally-slotted curved connecting portion at one side oF the post which passes through the said end portions, and f. a bolt passing through the slot in said connecting portion and screwed into said internally-threaded element on the band whereby the drill-holding clamp is adjustably fixed on said curved connecting portion for movement in an arc such that the lower end of a drill bit in the electric hand drill may be adjusted toward or away from the post and the electric hand drill also adjusted in an arc about said bolt as a pivot.
Claim 3
Dependent Claim
60 words
An electric hand drill-holding and guiding unit as defined in claim 1 in which there is a handle element on the base panel having a grip portion which extends in a generally horizontal direction with means on at least one end of the grip for securing it to the panel and keeping it elevated at a level above the panel.
Claim 4
Dependent Claim
42 words
An electric drill-holding and guiding accessory as defined in claim 1 wherein said post is pivottally supported on the base panel for selective adjustment about a horizontal axis in a range of at least 90* to each side of a vertical position.
Claim 5
Dependent Claim
122 words
An electric drill-holding and guiding accessory as defined in claim 1 wherein there is a separate bracket having a horizontal leg and a vertical leg secured to the base panel, said post being secured to said vertical leg by a horizontal pivot, clamping means selectively operable to hold the post in a position to which it may be moved about the horizontal pivot and the bracket being pivotally secured to the base by a vertical pivot spaced from the vertical leg so that the post with the drill carried thereon may be selectively moved in an arc concentric about the vertical pivot, and clamping means for holding the bracket in any position to which it may be moved about the vertical pivot.
Claim 6
Dependent Claim
69 words
An electric drill-holding and guiding accessory as defined in claim 4 in which said bracket is releasably clamped on the base panel for adjustment about a vertical axis, said vertical pivot being removable whereby the bracket may be reversibly secured to the panel whereby the vertical leg of the bracket and the post secured to it may extend downwardly below the plane of the panel as well as upwardly.
Claim 7
Dependent Claim
94 words
An electric drill-holding and guiding accessory as defined in claim 5 in which there is a handle having a horizontally-elongate grip portion and a supporting terminal portion at at least one end arranged to support the grip portion elevated above the panel, a vertical pivot passing through the terminal portion of the handle and carried by the panel for selective movement of said handle in a horizontal arc of at least 90* each side of a position where the long axis of the grip portion of the handle is in line with the post.
Claim 8
Dependent Claim
133 words
An electric drill-holding and guiding accessory comprising: a. an elongate rigid base panel with an anti-slip covering on its under surface, the panel having one screw-threaded hole therein near one end, a second screw-threaded hole therein spaced from the first, both holes being in a line parallel with the long axis of the panel; b. a short post having a threaded lower end which may be interchangeably screwed into either of said threaded holes; c. a longer post of the same diameter as the short one which also may be interchangeably screwed into either of said screw-threaded holes; d. a handle assembly having a grip portion and a terminal portion, the terminal portion being positioned directly over the panel and securing the grip portion with the panel at a level above the base.
Claim 9
Dependent Claim
133 words
An electric drill-holding and guiding accessory comprising: a. an elongate rigid base panel with an anti-slip covering on its under surface, the panel having one screw-threaded hole therein near one end, a second screw-threaded hole therein spaced from the first, both holes being in a line parallel with the long axis of the panel; b. a short post having a threaded lower end which may be interchangeably screwed into either of said threaded holes; c. a longer post of the same diameter as the short one which also may be interchangeably screwed into either of said screw-threaded holes; d. a handle assembly having a grip portion and a terminal portion, the terminal portion being positioned directly over the panel and securing the grip portion with the panel at a level above the base.
Claim 10
Dependent Claim
49 words
An electric drill-holding and guiding accessory as defined in claim 7 in which the base panel is removably secured to the horizontal leg of an angle bar the vertical leg of the angle bar providing means by which the panel may be clamped in and held by a vise.
Claim 11
Dependent Claim
69 words
An electric drill-holding and guiding accessory as defined in claim 8 in which the longer post is mounted on one end of the base panel and the said angle bar is longer than said base panel and one end of the bar extends beyonD that end of the panel on which the longer post is mounted, and a work support carried on said one end of the angle bar.
Claim 12
Dependent Claim
52 words
An electric drill-holding and guiding accessory as defined in claim 9 in which said work support is movable along said one end of the angle bar toward and away from the panel and longer post, and means for releasably clamping the support in any position to which it may be so adjusted.
Claim 13
Dependent Claim
204 words
An electric drill assembly as defined in claim 7 in which the longer post is screwed into the threaded hole near one end of the base and the shorter one is screwed into said other threaded hole and the handle can be moved in a horizontal arc on said shorter post, the handle having a grip portion with a guide hole therethrough with its axis parallel with the longer post and so located that, when the handle is swung toward the post and the drill in the holder is rotated about the post, the arc of a drill bit in the drill will intersect the arc of travel of the guide hole in the handle and the drill and drill bit may then be lowered, the connection between the slide and the drill-holding clamp being arranged to enable the drill bit to align itself as it enters and passes through the guide hole in the handle to thereby adjust the drill bit into parallelism with the longer post, said connection between the slide and drill-holding clamp being operable to releasably clamp the drill-holding clamp against movement relative to the slide when the drill bit is so positioned in the guide hole in the handle.
Claim 14
Dependent Claim
69 words
An electric drill-holding and guiding accessory as defined in claim 6 in which there is a bracket having a horizontal leg and a vertical leg, said bracket being pivotally secured to the base panel by a selectively-removable pivot passing through the horizontal leg of said bracket, the post being pivotally mounted on the vertical leg of said bracket for selective movement in a vertical arc about a horizontal pivot.
Claim 15
Dependent Claim
195 words
An electric drill-holding and guiding accessory comprising: a. a base panel; b. a post secured to said base panel near an edge thereof; c. an electric drill-holding unit slidably and rotatably fitted on the post arranged to hold an electric drill thereon eccentric to the post so that the bit-holding chuck of the drill is in a position where a bit held in the chuck may be lowered to engage a work piece beyond the edge of the base panel; d. a handle assembly having a grip portion and a terminal portion, the terminal portion being positioned directly over the panel and securing the grip portion with the panel at a level above the base; and e. the terminal portion of said handle assembly being pivotally connected with the base panel for rotation about a vertical axis through an arc of at least 180* and means being provided for locking said handle in any position along said arc, whereby the grip portion of the handle assembly may be positioned to extend eccentrically from the panel in a direction to counteract the eccentricity of the weight of the drill with respect to the post and panel.
Claim 16
Dependent Claim
195 words
An electric drill-holding and guiding accessory comprising: a. a base panel; b. a post secured to said base panel near an edge thereof; c. an electric drill-holding unit slidably and rotatably fitted on the post arranged to hold an electric drill thereon eccentric to the post so that the bit-holding chuck of the drill is in a position where a bit held in the chuck may be lowered to engage a work piece beyond the edge of the base panel; d. a handle assembly having a grip portion and a terminal portion, the terminal portion being positioned directly over the panel and securing the grip portion with the panel at a level above the base; and e. the terminal portion of said handle assembly being pivotally connected with the base panel for rotation about a vertical axis through an arc of at least 180* and means being provided for locking said handle in any position along said arc, whereby the grip portion of the handle assembly may be positioned to extend eccentrically from the panel in a direction to counteract the eccentricity of the weight of the drill with respect to the post and panel.
Claim 17
Dependent Claim
74 words
An electric drill-holding and guiding accessory as defined in claim 13 wherein said handle assembly has a vertical opening so positioned that the handle may be selectively rotated relative to the base in a direction where the said opening in the handle assembly is centered under the axis of rotation of a drill bit in the drill chuck for aligning the axis of rotation of the bit parallel with the axis of the post.
Claim 18
Dependent Claim
37 words
An electric drill-holding and guiding accessory as defined in claim 13 in which there is a second post on the base spaced from said first post, the terminal of the handle being interchangeably mountable on either post.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |