Patent US4427382A successfully refreshed from Google Patents.
US4427382A
Expired / Lapsed
US
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Dental equipment stand
Assignee: Kaltenbach and Voigt GmbH
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Filing: 1982-03-04
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Granted: 1984-01-24
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Expires: 2002-03-04
Abstract
Abstract A dental equipment stand with an adjustable multi-component carrying arm for a dental mounting component, wherein the carrying arm consists of two hingedly interconnected pivot arms, of which the first pivot arm is arranged to be pivotable about a pivot bearing at the end remote from the second pivot arm so as to be pivotable about a horizontal axis. The pivot bearing is, in turn, supported in a carrying component so as to be rotatable about a vertical axis, and in which the second pivot arm at its free end supports the mounting component. The mounting component which is arranged at the free end of the second pivot arm so as to be pivotable can, for example, be a holder for dental instruments, a repository plate with, possibly, a holder located thereon for dental instruments, or the like. The carrying component which includes the pivot bearing can be arranged stationarily or movably on the floor or, for example, as a console on the wall, on the ceiling or on a professional furniture piece, for instance, on a cabinet or on a writing desk.
Inventors
- 👤 Jurgen Hoffmeister
- 👤 Franz-Xaver Boeckh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
F; F16; F16M; F16M13/00; F16M13/02; A; A61; A61G; A61G15/00; A61G15/14; A61G15/16; F16M11/00; F16M11/02; F16M11/04; F16M11/043; F16M11/046; F16M11/048; F16M11/20; F16M11/2007; F16M11/2014; F16M11/2092; F16M11/24; F16M2200/00; F16M2200/04; F16M2200/041; F16M2200/044; F16M2200/06; F16M2200/063
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
277 words
In a dental equipment stand, an adjustable multi-component carrying arm for supporting and positioning dental equipment, said arm and stand comprising: (a) an L-shaped carrying means for supporting said arm, said carrying means providing a first vertical axis for rotation of said arm about a first circumferential path and a second axis for rotation of said arm along a portion of a second circumferential path, (b) first and second pivot arms joined together by a single piece arcuate link member, said first pivot arm being pivotably mounted on said L-shaped carrying means to pivot about said second axis and to tranverse said first circumferential path, said second pivot arm being mounted on said single piece arcuate link member, said single link member also defining a first spring shackle, (c) said first pivot arm defining a first pair of substantially parallel guide arms and said second pivot arm defining a second pair of substantially parallel guide arms, with said single arcuate link member effecting articulation from said first pair of guide arms to said second pair of guide arms, (d) said L-shaped carrying means providing first and second spaced apart pivot points for supporting the first pair of guide arms, said L-shaped means also defining a second spring shackle mounted above the pivot points for said second pair of guide arms, with an adjustable spring means joining said first and second shackle to resiliently offset the weight of said guide arms and said headpiece, (e) said second pair of guide arms terminating in a headpiece having first and second spaced apart pivot points for securing the second pair of guide arms, (f) said headpiece supporting said dental equipment.
Claim 2
Dependent Claim
277 words
In a dental equipment stand, an adjustable multi-component carrying arm for supporting and positioning dental equipment, said arm and stand comprising: (a) an L-shaped carrying means for supporting said arm, said carrying means providing a first vertical axis for rotation of said arm about a first circumferential path and a second axis for rotation of said arm along a portion of a second circumferential path, (b) first and second pivot arms joined together by a single piece arcuate link member, said first pivot arm being pivotably mounted on said L-shaped carrying means to pivot about said second axis and to tranverse said first circumferential path, said second pivot arm being mounted on said single piece arcuate link member, said single link member also defining a first spring shackle, (c) said first pivot arm defining a first pair of substantially parallel guide arms and said second pivot arm defining a second pair of substantially parallel guide arms, with said single arcuate link member effecting articulation from said first pair of guide arms to said second pair of guide arms, (d) said L-shaped carrying means providing first and second spaced apart pivot points for supporting the first pair of guide arms, said L-shaped means also defining a second spring shackle mounted above the pivot points for said second pair of guide arms, with an adjustable spring means joining said first and second shackle to resiliently offset the weight of said guide arms and said headpiece, (e) said second pair of guide arms terminating in a headpiece having first and second spaced apart pivot points for securing the second pair of guide arms, (f) said headpiece supporting said dental equipment.
Claim 3
Dependent Claim
47 words
An equipment stand as claimed in cliam 1 wherein said L-shaped carrying means is supported along a longer cylindrical portion thereof by at least two spaced radial bearings along the first vertical axis for rotation,and being supported by an axial bearing on an extension arm support member.
Claim 4
Dependent Claim
20 words
An equipment stand as claimed in claim 2, wherein said radial bearings and said axial bearing each comprise ball bearings.
Claim 5
Dependent Claim
61 words
An equipment stand as claimed in claim 1 or 2, comprising a hollow bolt inserted in a wall of the vertical portion of said L-shaped carrying means; a bolt arranged within said hollow bolt; a spring and a threaded pin acting as a counter bearing on said spring for resiliently pressing said bolt against the cylindrical surface of said carrying means.
Claim 6
Dependent Claim
58 words
An equipment stand as claimed in claim 4, wherein a vertical cylindrical portion is supported by a vertical axle, said axle including an annular groove, a protruding pin interrupting said groove at one location; and a threaded pin screwed through the wall of the cylindrical portion of the carrying means having a forward extension that engages said groove.
Claim 7
Dependent Claim
36 words
An equipment stand as claimed in claim 5, wherein said vertical axle is hollow, and includes a support rod for the retention of lamps and the like which is insertable into the bore of said axle.
Claim 8
Dependent Claim
177 words
In a dental equipment stand, an adjustable multi-component carrying arm for supporting and positioning dental equipment, said arm and stand comprising: (a) An L-shaped carrying means having a vertical cylindrical portion supported by a vertical axle with at least two spaced radial bearings therebetween, said carrying means being supported for rotation about said axle by an axial bearing carried by a chair support member, (b) first and second pivot arms joined together by an intermediate link member, said first pivot arm being pivotably mounted on said L-shaped carrying means, said second pivot arm being mounted on said intermediate link member, (c) each of said pivot arms having a pair of substantially parallel guide arms spaced from one another, with said intermediate link member effecting articulation from said first pair of guide arms to said second pair of guide arms. (d) said L-shaped carrying means providing first and second spaced apart pivot points for supporting the first pair of guide arms. (e) said second pivot arm supporting said dental equipment for positioning about each of the pivotal axes.
Claim 9
Dependent Claim
177 words
In a dental equipment stand, an adjustable multi-component carrying arm for supporting and positioning dental equipment, said arm and stand comprising: (a) An L-shaped carrying means having a vertical cylindrical portion supported by a vertical axle with at least two spaced radial bearings therebetween, said carrying means being supported for rotation about said axle by an axial bearing carried by a chair support member, (b) first and second pivot arms joined together by an intermediate link member, said first pivot arm being pivotably mounted on said L-shaped carrying means, said second pivot arm being mounted on said intermediate link member, (c) each of said pivot arms having a pair of substantially parallel guide arms spaced from one another, with said intermediate link member effecting articulation from said first pair of guide arms to said second pair of guide arms. (d) said L-shaped carrying means providing first and second spaced apart pivot points for supporting the first pair of guide arms. (e) said second pivot arm supporting said dental equipment for positioning about each of the pivotal axes.
Claim 10
Dependent Claim
94 words
An equipment stand as claimed in claim 7, which further comprises a spring means interposed between the two pairs of horizontal linkage axes of the first pair of guide arms, said spring having the lower end thereof fastened to the upper end of a first shackle, said first shackle being a bracket means that projects beyond the spaced apart pivot points of the carrying means, said spring being retained at its upper end to a second shackle which is mounted between the two upper linkage arms and secured to the single arcuate link member.
Claim 11
Dependent Claim
40 words
An equipment stand as claimed in claim 8, wherein said spring means is a coil spring; and includes means for varying the tensile force of said coil spring connected between the lower end of said spring and said first shackle.
Claim 12
Dependent Claim
36 words
An equipment stand as claimed in claim 1 or 7, which further comprises brake means on the guide arms of said first pivot arm adapted to be actuated to prevent relative displacement between said guide arms.
Claim 13
Dependent Claim
97 words
An equipment stand as claimed in claim 10, wherein said brake means comprising a pneumatic brake including a U-shaped angle member and an intermediate wall attached thereto, said brake being fastened to one of said guide arms between the intermediate wall and one arm of said angle member, said brake having a brake cylinder fastened to the other arm of said angle member, said brake cylinder including a piston acting on a sliding angle section fixedly connected with the other guide arm, said sliding angle section being pressed against the brake lining arranged on the intermediate wall.
Claim 14
Dependent Claim
38 words
An equipment stand as claimed in claim 1 or 7, wherein said headpiece further includes support side walls for a horizontal linkage axis, said dental equipment being supported on said headpiece for pivotal movement about a vertical axis.
Claim 15
Dependent Claim
47 words
An equipment stand as claimed in claim 12, which further comprises a bellows encompassing said pivot arms in the region of the single arcuate link member and the pivotal points of said headpiece; said arms also including a covering on said pivot arms and the supports therefore.
Claim 16
Dependent Claim
16 words
An equipment stand as claimed in claim 13, comprising a covering encompassing said L-shaped carrying means.
Claim 17
Dependent Claim
50 words
An equipment stand as claimed in claim 1 or 7 wherein said stand further comprises an extension arm having a support portion, and said L-shaped carrying means also defines a vertical axle fastened in said support portion, said extension arm being connected to a height-adjustable part of a treatment chair.
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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) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |