US3704850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopically collapsible table leg
Assignee: Krueger International Inc
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Filing: 1971-01-04
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Granted: 1972-12-05
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Expires: 1991-01-04
Abstract
Abstract An adjustable table leg structure includes an upper leg connected to the table top and a leg extension or lower leg portion which is telescopically reciprocable within the upper leg to afford height adjustment. The extension leg is held in the adjusted position by a spring biased pawl which is pivoted on the exterior of the upper leg and has a terminal tooth which projects through a slot in the upper leg for engagement with any one of a plurality of vertically spaced locking apertures in the leg extension. The tooth is released from engagement by manual pressure on an arm pivoted to the pawl. The tooth is locked in engagement by pivoting the arm to locate a blocking tab on the arm between the pawl and the upper leg to prevent movement of the pawl and thus provide secure support.
Inventors
- 👤 Philip J Hendrickson
- 👤 Richard J Resch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:07
CPC Classifications
A; A47; A47B; A47B9/00; A47B9/20; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
An adjustable table leg structure comprising an upper leg portion with a guide channel and an opening into the channel, a leg extension telescopically reciprocable within the guide channel, said extension having a a plurality of spaced locking apertures selectively registerable with the said aperture of the upper leg portion, a pawl having a tooth, means for pivotally supporting said pawl externally on said upper leg portion for movement of said tooth through said first-mentioned opening to and from engagement in one of said locking apertures registering therewith and including means for securing said tooth in the engaged position, said means for securing said tooth in the engaged position comprises an arm including a transverse blocking tab and means for pivotally connecting said arm to said pawl for movement of said tab into a blocking position between said pawl and said upper leg portion and a clearance position with said tab spaced from said upper leg portion.
Claim 2
Dependent Claim
157 words
An adjustable table leg structure comprising an upper leg portion with a guide channel and an opening into the channel, a leg extension telescopically reciprocable within the guide channel, said extension having a a plurality of spaced locking apertures selectively registerable with the said aperture of the upper leg portion, a pawl having a tooth, means for pivotally supporting said pawl externally on said upper leg portion for movement of said tooth through said first-mentioned opening to and from engagement in one of said locking apertures registering therewith and including means for securing said tooth in the engaged position, said means for securing said tooth in the engaged position comprises an arm including a transverse blocking tab and means for pivotally connecting said arm to said pawl for movement of said tab into a blocking position between said pawl and said upper leg portion and a clearance position with said tab spaced from said upper leg portion.
Claim 3
Dependent Claim
45 words
A table leg structure in accordance with claim 1 wherein said arm is pivoted to said pawl between said pawl and said upper leg portion, and a stop on said pawl to engage said arm and limit movement of said arm in the blocking position.
Claim 4
Dependent Claim
180 words
An adjustable table leg structure comprising an upper leg portion having an exposed wall and spaced side walls, a slot in said exposed wall, a pawl having a terminal tooth, spaced ears on said pawl pivotally connected to said side walls, a spring between said pawl and said leg portion to bias said tooth inwardly through said slot, an extension leg telescopically reciprocable in said upper leg portion and having a plurality of spaced locking apertures registerable with said slot and engageable by said tooth, and means on said pawl for compressing said spring to disengage said pawl tooth, and means for securing said tooth in an engaged position and wherein said means on said pawl for compressing said spring and for securing said tooth in an engaged position comprises an arm pivotally connected to said pawl, said arm including a blocking tab projecting from said arm toward said leg portion and movable with said arm to a position between said pawl and said leg portion to prevent movement of said pawl about said pivotal connection to said leg portion.
Claim 5
Dependent Claim
180 words
An adjustable table leg structure comprising an upper leg portion having an exposed wall and spaced side walls, a slot in said exposed wall, a pawl having a terminal tooth, spaced ears on said pawl pivotally connected to said side walls, a spring between said pawl and said leg portion to bias said tooth inwardly through said slot, an extension leg telescopically reciprocable in said upper leg portion and having a plurality of spaced locking apertures registerable with said slot and engageable by said tooth, and means on said pawl for compressing said spring to disengage said pawl tooth, and means for securing said tooth in an engaged position and wherein said means on said pawl for compressing said spring and for securing said tooth in an engaged position comprises an arm pivotally connected to said pawl, said arm including a blocking tab projecting from said arm toward said leg portion and movable with said arm to a position between said pawl and said leg portion to prevent movement of said pawl about said pivotal connection to said leg portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |