US4589741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal revolving microscope stage
Assignee: Individual
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Filing: 1984-12-21
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Granted: 1986-05-20
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Expires: 2004-12-21
Abstract
Abstract A stage which can be revolved and moved linearly simultaneously by turning a single knob. The specimen revolves in an involute curve beneath the objective lens. A wheel revolves the stage while a threaded shaft applies linear displacement of the stage.
Inventors
- 👤 John E. Clegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:28
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/26; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A universal revolving microscope stage comprising; a. A horizontal carrier (10) mounted at opposite sides on two parallel recessed tracks (11) in a rectangular housing (12) in which said carrier (10) moves linearly, b. A circular revolving stage (9) with a circular track (14) located on the bottom thereof mounted inside said carrier (10), c. A roller (13) mounted on a horizontal revolving bushing (15) attached to the bottom of said carrier (10), with said roller (13) engaging said track (14) as means of revolving said stage (9), d. A fixed bushing (16) with internal threads mounted on the bottom of said carrier (10), and e. A horizontal revolving shaft (18) with a threaded portion (22) engaging the internal threads of said bushing (16) as means of imparting linear movement to said carrier (10), and with a flat-sided portion (20) engaging a key (21) of said bushing (15) as means of revolving said stage (9).
Claim 2
Dependent Claim
155 words
A universal revolving microscope stage comprising; a. A horizontal carrier (10) mounted at opposite sides on two parallel recessed tracks (11) in a rectangular housing (12) in which said carrier (10) moves linearly, b. A circular revolving stage (9) with a circular track (14) located on the bottom thereof mounted inside said carrier (10), c. A roller (13) mounted on a horizontal revolving bushing (15) attached to the bottom of said carrier (10), with said roller (13) engaging said track (14) as means of revolving said stage (9), d. A fixed bushing (16) with internal threads mounted on the bottom of said carrier (10), and e. A horizontal revolving shaft (18) with a threaded portion (22) engaging the internal threads of said bushing (16) as means of imparting linear movement to said carrier (10), and with a flat-sided portion (20) engaging a key (21) of said bushing (15) as means of revolving said stage (9).
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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |