Patent US3778121A successfully refreshed from Google Patents.
US3778121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide guide having preloaded hollow and solid roller bearings
Assignee: Brown and Sharpe Manufacturing Co
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Filing: 1971-11-18
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Granted: 1973-12-11
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Expires: 1991-11-18
Abstract
Abstract A machine slide having a support member and a carriage member movable on said support. One of said members having a channel formed in it and the other member having a guide tongue that extends into the channel. Raceways are formed along the inner surfaces of the channel opposite surfaces of the guide tongue. Roller bearings have a portion of their circular surfaces in bearing contact with the raceways and also a portion of their circular surfaces in bearing contact with the wall surfaces of the guide tongue which are opposite the raceways. The roller bearings are comprised of both solid rolls and hollow rolls. The distance between all the opposite surfaces upon which the hollow rolls bear when assembled is less than the diameter of the hollow rolls whereby when the hollow rolls are positioned in place between their opposite bearing surfaces they are compressed between said bearing surfaces to strain them and pre-loaded solid rolls.
Inventors
- 👤 G Levesque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:02
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/002; F16C29/04; F16C29/041; F16C33/00; F16C33/30; F16C33/306; F16C33/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
A slide comprising in combination, a pair of members comprising a support and a carriage movable on said support, guide channel means forming a portion of one of said members and guide tongue means forming a portion of said other member, said guide channel means having raceways formed along an area of their surfaces which face the surfaces of said guide tongue means, roller bearing means having a portion of their circular surfaces in bearing contact with said raceways and also a portion of their circular surfaces in bearing contact with the wall surfaces of said guide tongue means which are opposite said raceways, said roller bearing means comprising both solid rolls and hollow rolls, the distance between all the opposite surfaces upon which the hollow rolls bear when assembled being less than the diameter of the hollow rolls, and said hollow rolls located with respect to the solid rolls so as to pre-load the solid rollers, whereby when the hollow rolls are positioned in place between their opposite bearing surfaces they are compressed between said bearing surfaces to strain the hollow rolls and pre-load the solid rolls.
Claim 2
Dependent Claim
188 words
A slide comprising in combination, a pair of members comprising a support and a carriage movable on said support, guide channel means forming a portion of one of said members and guide tongue means forming a portion of said other member, said guide channel means having raceways formed along an area of their surfaces which face the surfaces of said guide tongue means, roller bearing means having a portion of their circular surfaces in bearing contact with said raceways and also a portion of their circular surfaces in bearing contact with the wall surfaces of said guide tongue means which are opposite said raceways, said roller bearing means comprising both solid rolls and hollow rolls, the distance between all the opposite surfaces upon which the hollow rolls bear when assembled being less than the diameter of the hollow rolls, and said hollow rolls located with respect to the solid rolls so as to pre-load the solid rollers, whereby when the hollow rolls are positioned in place between their opposite bearing surfaces they are compressed between said bearing surfaces to strain the hollow rolls and pre-load the solid rolls.
Claim 3
Dependent Claim
32 words
A machine slide as recited in claim 1 wherein said raceways are positioned in sets of two with the individual raceways of each set positioned adjacent opposite faces of said tongue means.
Claim 4
Dependent Claim
32 words
A machine slide as recited in claim 2 wherein the individual rolls of said roller bearing means are separated from each other by cages that extend along the length of said raceways.
Claim 5
Dependent Claim
31 words
A machine slide as recited in claim 3 wherein in each set of raceways one raceway only has solid rolls positioned therein while the other raceway has hollow rolls positioned therein.
Claim 6
Dependent Claim
32 words
A machine slide as recited in claim 4 wherein said raceways in said guide channel means are V-shaped in cross-section and there are also opposed V-shaped raceways in said guide tongue means.
Claim 7
Dependent Claim
51 words
A machine slide as recited in claim 5 wherein certain of said rolls are tilted in one direction with their axes in a common plane and the remainder of said rolls being tilted in another direction with their axes a common plane at a substantial angle to the first mentioned plane.
Claim 8
Dependent Claim
17 words
A machine slide as recited in claim 4 wherein there are at least three sets of raceways.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |