Patent US3821852A successfully refreshed from Google Patents.
US3821852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray with astral lamp for dental use
Assignee: Yoshida Dental Mfg Co Ltd
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Filing: 1972-09-27
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Granted: 1974-07-02
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Expires: 1992-09-27
Abstract
Abstract A tray and an astral lamp for dental use are connected to a common support member in a fixed vertically spaced relation, the lamp and tray being individually rotatably attached to the common support member. The common support member is attached to the front end of an up and down swingable arm comprising a parallel link mechanism having a balancing spring, and the latter arm is rotatably mounted on a pole fixed on a dental unit or the like.
Inventors
- 👤 M Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
Apparatus for dental use comprising a vertical pole, a single arm extending generally horizontally and connected to said pole for up and down pivotal movement, said arm having a free end remote from said pole, a lamp means, a dental tray, a common support for said lamp means and tray by which the lamp means and tray are held in fixed vertically spaced relation, and means connecting said common support to said free end of said arm so that by moving said arm the lamp means and tray can be moved simultaneously while maintaining their fixed vertically spaced relation.
Claim 2
Dependent Claim
99 words
Apparatus for dental use comprising a vertical pole, a single arm extending generally horizontally and connected to said pole for up and down pivotal movement, said arm having a free end remote from said pole, a lamp means, a dental tray, a common support for said lamp means and tray by which the lamp means and tray are held in fixed vertically spaced relation, and means connecting said common support to said free end of said arm so that by moving said arm the lamp means and tray can be moved simultaneously while maintaining their fixed vertically spaced relation.
Claim 3
Dependent Claim
17 words
Apparatus as claimed in claim 1 wherein said comprises a parallel link mechanism with a balancing spring.
Claim 4
Dependent Claim
45 words
Apparatus as claimed in claim 2 comprising a first bent arm supporting the lamp means from the common support for rotatable movement about a vertical axis, and a second bent arm supporting the tray from the common support for rotatable movement about a vertical axis.
Claim 5
Dependent Claim
24 words
Apparatus as claimed in claim 3 comprising means supporting the lamp means from the first bent arm for pivotable movement about a horizontal axis.
Claim 6
Dependent Claim
43 words
Apparatus as claimed in claim 4 comprising means supporting the tray from the second bent arm for pivotable movement about a vertical axis, which is horizontally offset from the vertical axis about which the second bent arm is supported from the common support.
Claim 7
Dependent Claim
33 words
Apparatus as claimed in claim 4 wherein the common support comprises a support member pivotably connected to the link mechanism at the front end thereof, and a handle connected to said support member.
Claim 8
Dependent Claim
33 words
Apparatus as claimed in claim 6 comprising a dental chair, said pole being secure to said chair and means supporting the link mechanism from the pole for pivotable movement about a vertical axis.
Claim 9
Dependent Claim
27 words
Apparatus as claimed in claim 7 wherein said second bent arm includes first and second portions and a connecting hinge permitting relative rotation about a vertical axis.
Claim 10
Dependent Claim
19 words
Apparatus as claimed in claim 8 comprising a subsidiary arm connecting said second bent arm to said support member.
Claim 11
Dependent Claim
34 words
Apparatus as claimed in claim 7 wherein the means supporting the link mechanism from the pole comprises an L-shaped arm rotatably mounted on said pole, saId link mechanism being connected to said L-shaped arm.
References Cited (Backward Citations)
US1714412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |