US3901564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawer extensible slide chassis
Assignee: Individual
•
Filing: 1973-10-29
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Granted: 1975-08-26
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Expires: 1993-10-29
Abstract
Abstract A drawer extensible slide chassis, of which opposite hand units are adapted for attachment in mirror image to the interior of a desk pedestal or a filing cabinet, and to the sides of a drawer. The chassis comprises: a case attachment rail of channel profile, a drawer attachment rail of channel profile, and a unitary extension slide having first and second slide rails of channel profile extending along and affixed to one side of a generally bar shaped connecting member. The first rail of the extension slide is partially telescoped into the case attachment rail and is slidably correlated therewith on ball bearings. The drawer attachment rail is partially telescoped over the extension slide second rail and is slidably correlated therewith on ball bearings. The case and drawer attachment rails are both disposed in greater part along one side of a median vertical plane extending longitudinally between the attachment rails and the unitary extension slide rails, and intersecting the channel profiles of said rails.
Inventors
- 👤 Henry P Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
A; A47; A47B; A47B88/00; A47B88/40; A47B88/49; A47B88/493; A47B2210/00; A47B2210/0002; A47B2210/001; A47B2210/0029; A47B2210/0032; A47B2210/0035; A47B2210/0051; A47B2210/0059; A47B2210/0064; A47B2210/007; A47B2210/0081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A drawer extensible slide chassis comprising: a case attachment rail; a drawer attachment rail; an extension slide including first and second rails disposed in substantially parallel spaced relationship along one side of and affixed to a generally bar shaped connecting member; each of said rails being channel shaped in cross section including a web and two laterally extending ball bearing raceway flanges; the first rail of the extension slide being partially telescoped into the case attachment rail and slidably correlated therewith on ball bearings supported by the said rail ball bearing raceway flanges, the drawer attachment rail being partially telescoped over the second rail of the extension slide and slidably correlated therewith on ball bearings supported by the said respective rail ball bearing raceway flanges; a resilient and deformable propulsion roller carried by the extension slide connecting member, disposed between opposed flanges of the extension slide first and second rails, and located between and tractionally contacting opposed flanges of the case attachment rail and the drawer attachment rail; a pair of ball bearing retainers for guiding said ball bearings; and plastic slide members engaged between said ball bearing retainers and a raceway flange of each of said rails.
Claim 2
Dependent Claim
198 words
A drawer extensible slide chassis comprising: a case attachment rail; a drawer attachment rail; an extension slide including first and second rails disposed in substantially parallel spaced relationship along one side of and affixed to a generally bar shaped connecting member; each of said rails being channel shaped in cross section including a web and two laterally extending ball bearing raceway flanges; the first rail of the extension slide being partially telescoped into the case attachment rail and slidably correlated therewith on ball bearings supported by the said rail ball bearing raceway flanges, the drawer attachment rail being partially telescoped over the second rail of the extension slide and slidably correlated therewith on ball bearings supported by the said respective rail ball bearing raceway flanges; a resilient and deformable propulsion roller carried by the extension slide connecting member, disposed between opposed flanges of the extension slide first and second rails, and located between and tractionally contacting opposed flanges of the case attachment rail and the drawer attachment rail; a pair of ball bearing retainers for guiding said ball bearings; and plastic slide members engaged between said ball bearing retainers and a raceway flange of each of said rails.
Claim 3
Dependent Claim
229 words
A drawer extensible slide chassis comprising; a case attachment rail; a drawer attachment rail; and an extension slide including a generally planar connecting member and first and second rails disposed in substantially parallel vertically spaced relationship and extending outwardly from the same side of said planar member; each of said rails being channel shaped in cross section including a web and two laterally extending ball bearing raceway flanges; the first rail of the extension slide being partially telescoped into the case attachment rail, a first set of ball bearings supported between the said rail ball bearing raceway flanges and the case attachment rail, the drawer attachment rail being partially telescoped over the second rail of the extension slide, a second set of ball bearings supported between the said respective rail ball bearing raceway flanges and the drawer attachment rail, and a resilient and deformable propulsion roller carried by the extension slide connecting member, disposed between opposed flanges of the extension slide first and second rails, and located between and tractionally contacting opposed flanges of the case attachment rail and the drawer attachment rail, said ball bearings defining a vertical plane with said propulsion roller in said plane, and said case attachment rail and drawer attachment rail being positioned to one side of the vertical plane and said planar connecting member being at the other side of the vertical plane.
Claim 4
Dependent Claim
229 words
A drawer extensible slide chassis comprising; a case attachment rail; a drawer attachment rail; and an extension slide including a generally planar connecting member and first and second rails disposed in substantially parallel vertically spaced relationship and extending outwardly from the same side of said planar member; each of said rails being channel shaped in cross section including a web and two laterally extending ball bearing raceway flanges; the first rail of the extension slide being partially telescoped into the case attachment rail, a first set of ball bearings supported between the said rail ball bearing raceway flanges and the case attachment rail, the drawer attachment rail being partially telescoped over the second rail of the extension slide, a second set of ball bearings supported between the said respective rail ball bearing raceway flanges and the drawer attachment rail, and a resilient and deformable propulsion roller carried by the extension slide connecting member, disposed between opposed flanges of the extension slide first and second rails, and located between and tractionally contacting opposed flanges of the case attachment rail and the drawer attachment rail, said ball bearings defining a vertical plane with said propulsion roller in said plane, and said case attachment rail and drawer attachment rail being positioned to one side of the vertical plane and said planar connecting member being at the other side of the vertical plane.
Claim 5
Dependent Claim
78 words
A drawer extensible slide chassis as defined in claim 2, wherein a plurality of said propulsion rollers are carried by the unitary extension slide, and are positioned between the case attachment rail and the drawer attachment rail in peripheral contact therewith, a raised boss in said flange of the case attachment rail near an end thereof, and one of said propulsion rollers being positioned to engage said boss and yieldably hold the slide chassis in a retracted position.
Claim 6
Dependent Claim
60 words
A drawer extensible slide chassis as defined in claim 2 wherein said first and second set of ball bearings each have a ball bearing retainer for guiding of the ball bearings, and a plurality of plastic slide members carried on each of the retainers and engaged between said ball bearing retainers and a raceway flange of each of said rails.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |