US3822606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic bar-shaped rack
Assignee: NITTSU SOGOKENKYUSHO KK
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Filing: 1972-12-29
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Granted: 1974-07-09
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Expires: 1992-12-29
Abstract
Abstract A bar-shaped flexible rack for slidable linear motion under the action of a rotatable pinion within a curved guide, the rack being provided with rack teeth set at a fixed spacing on a spindle a plurality of elasticity, which spindle has a predetermined elasticity.
Inventors
- 👤 M Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/26; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A rack for slidable linear motion by a rotating pinion, along a guide having straight and curved portions which rack comprises: a flexible spindle having a predetermined modulus of elasticity; a plurality of resilient rack-teeth peripherally disposed in mutually fixed spaced relationship along the spindle for engagement with the pinion when the rack is in the guide, whereby during said slidable linear motion the rack flexibly adapts to both the curved and straight portions of the guide thus ensuring continuous unimpeded progress of the rack therethrough.
Claim 2
Dependent Claim
86 words
A rack for slidable linear motion by a rotating pinion, along a guide having straight and curved portions which rack comprises: a flexible spindle having a predetermined modulus of elasticity; a plurality of resilient rack-teeth peripherally disposed in mutually fixed spaced relationship along the spindle for engagement with the pinion when the rack is in the guide, whereby during said slidable linear motion the rack flexibly adapts to both the curved and straight portions of the guide thus ensuring continuous unimpeded progress of the rack therethrough.
Claim 3
Dependent Claim
33 words
A device as claimed in claim 1 where said spindle is circular in cross section and said resilient rack-teeth have the shape of circular flanges mounted on the outer surface of the spindle.
Claim 4
Dependent Claim
65 words
A device as claimed in claim 1 where said spindle is square in cross section and each one of said teeth consist of a square shaped projection disposed on each side of said square shaped spindle, the pinion being rotatably engagable with a specific one of said projections on each of said teeth of the spindle for linear motion of the rack within the guide.
Claim 5
Dependent Claim
15 words
A device as claimed in claim 2 wherein said spindle is formed of synthetic resin.
Claim 6
Dependent Claim
15 words
A device as claimed in claim 3 wherein said spindle is formed of synthetic resin.
References Cited (Backward Citations)
US3572153A
Cited
US3636791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |