Patent US3604734A successfully refreshed from Google Patents.
US3604734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjusting and locking mechanism for adjustable and collapsible table
Assignee: Re-Ly-On Metal Products Inc
•
Filing: 1969-05-13
•
Granted: 1971-09-14
•
Expires: 1989-05-13
Abstract
Abstract Mechanism for adjustably connecting and locking in adjusted positions two telescoping tubular members which serve as a single standard for interconnecting a table base and a vertically adjustable weight-biased table top, in which the telescoping tubular members are connected for their relative adjustment to produce therebetween a frictionally smooth sliding movement restricted to a maintained straight vertical direction, and in which the locking mechanism is structured to require but a small manual effort on the part of the user, yet be able to apply or exert a large force on the tubular members such as to firmly lock the same together.
Inventors
- 👤 Walter Friedman
- 👤 Aaron Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:55
CPC Classifications
A; A47; A47B; A47B9/00; A47B9/08; A47B23/00; A47B23/04; A47B23/046; A47B2023/047; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32467; Y10T403/32475; Y10T403/32501; Y10T403/32532; Y10T403/70; Y10T403/7047; Y10T403/7049
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
254 words
Mechanism for adjustably connecting two telescoping tubular members and for locking the same in adjusted positions, comprising relatively adjustable telescoping outer and inner tubular members, the said tubular members being internally spaced from each other transversely, a bushing located and occupying space between and defining a spacer for said tubular members, the said bushing comprising a sleeve of a plastic material the interior surface of which, in contact with the exterior surface of the inner tubular member, presents a frictionally smooth surface for enabling a sliding movement of said inner tubular member, the said bushing sleeve being attached to the outer tubular member at a region to restrain longitudinal movement thereof in said outer tubular member, whereby the said tubular members are freely, but with a sliding friction fit supplied by said bushing sleeve, relatively adjustable telescopically one with reference to the other, and means for adjustably locking the Said tubular members in telescopically adjusted positions, said means comprising a locking element fixed to the outer tubular member, said locking element comprising a resilient lever integrally fulcrumed on the outer tubular member and provided with a cup-shaped part movable into and out of engagement with the outer surface of said bushing sleeve to force the latter onto the inner tubular member for the locking action and release the same from the inner tubular member for the unlocking action, and a hand-operated member mounted on said outer tubular member movable thereon into and out of cooperative engagement with the cup-shaped part of said locking element.
Claim 2
Dependent Claim
254 words
Mechanism for adjustably connecting two telescoping tubular members and for locking the same in adjusted positions, comprising relatively adjustable telescoping outer and inner tubular members, the said tubular members being internally spaced from each other transversely, a bushing located and occupying space between and defining a spacer for said tubular members, the said bushing comprising a sleeve of a plastic material the interior surface of which, in contact with the exterior surface of the inner tubular member, presents a frictionally smooth surface for enabling a sliding movement of said inner tubular member, the said bushing sleeve being attached to the outer tubular member at a region to restrain longitudinal movement thereof in said outer tubular member, whereby the said tubular members are freely, but with a sliding friction fit supplied by said bushing sleeve, relatively adjustable telescopically one with reference to the other, and means for adjustably locking the Said tubular members in telescopically adjusted positions, said means comprising a locking element fixed to the outer tubular member, said locking element comprising a resilient lever integrally fulcrumed on the outer tubular member and provided with a cup-shaped part movable into and out of engagement with the outer surface of said bushing sleeve to force the latter onto the inner tubular member for the locking action and release the same from the inner tubular member for the unlocking action, and a hand-operated member mounted on said outer tubular member movable thereon into and out of cooperative engagement with the cup-shaped part of said locking element.
Claim 3
Dependent Claim
73 words
The adjusting mechanism of claim 1 in which the bushing sleeve is localized at the upper end of the outer tubular member and in which the lower end of said inner tubular member has affixed thereto a plastic piece also occupying space between said tubular elements and defining means for frictionally guiding the telescoping movement of the inner tubular member at its lower end and for preventing rocking motion between said tubular members.
Claim 4
Dependent Claim
19 words
The adjusting mechanism of claim 1 in which the bushing sleeve is made of a plastic material possessing lubricity.
Claim 5
Dependent Claim
25 words
The adjusting mechanism of claim 2 in which the plastic bushing sleeve and the plastic piece are each made of a plastic material possessing lubricity.
Claim 6
Dependent Claim
20 words
The adjusting mechanism of claim 1, in which the hand-operated member comprises a screw-threaded part cooperating with the cup-shaped part.
Claim 7
Dependent Claim
47 words
The adjusting mechanism of claim 1 in which the outer tubular member comprises a standard attached to a table base, and the inner tubular member comprises a sole support carrying a tabletop, the adjusting mechanism defining the means for vertically adjusting the tabletop relatively to said base.
Claim 8
Dependent Claim
29 words
The adjusting mechanism of claim 1, in which the outer and inner tubular members are metallic members cross-sectionally shaped to confine the tubular members to only a vertical adjustment.
Claim 9
Dependent Claim
41 words
The adjusting mechanism of claim 1 in which the cup-shaped part of the resilient lever is formed with an outer annular edge positioned to engage the contiguous surface of the bushing sleeve to force the latter onto the inner tubular member.
Claim 10
Dependent Claim
53 words
The adjusting mechanism of claim 1 in which the cup-shaped part of the resilient member is formed (a) with an outer annular edge positioned for cooperative engagement with the contiguous surface of the bushing sleeve and (b) with an inner apex positioned for cooperative engagement by a screw-threaded part of the hand-operated member.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |