Patent US4080080A successfully refreshed from Google Patents.
US4080080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable leg assembly
Assignee: Fisher Hamilton LLC
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Filing: 1977-02-16
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Granted: 1978-03-21
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Expires: 1997-02-16
Abstract
Abstract An adjustable leg assembly for use in any leg supporting application advantageously utilizing leg adjustability. The assembly includes a channel member, a telescoping member and a resilient spacer member. The resilient spacer member is fixed to the telescoping member and slidably mounted on the channel member. The telescoping member normally extends from one end of the channel member and can include a positive locking member engageable with the channel member at selected positions of adjustment. The resilient spacer member guides relative sliding movement while preventing direct contact between the channel and telescoping members. The assembly includes a pressure plate to urge the resilient spacer member into firm engagement with the channel member at selected times to frictionally secure the channel member to the telescoping member.
Inventors
- 👤 Earl J. Cisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1472; A; A47; A47B; A47B9/00; A47B9/14; E; E04; E04D; E04D13/00; E04D13/16; F16B7/105; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459; Y10T403/32532; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
84 words
An adjustable leg assembly comprising a channel member, a telescoping member normally extending from one end of said channel member, a resilient spacer member fixed to said telescoping member and slidably mounted on said channel member, said resilient spacer member guiding relative sliding movement while preventing direct contact between said channel and telescoping members, and means for urging said resilient spacer member into firm engagement with said channel member at selected positions of adjustment to frictionally secure said channel member to said telescoping member.
Claim 2
Dependent Claim
84 words
An adjustable leg assembly comprising a channel member, a telescoping member normally extending from one end of said channel member, a resilient spacer member fixed to said telescoping member and slidably mounted on said channel member, said resilient spacer member guiding relative sliding movement while preventing direct contact between said channel and telescoping members, and means for urging said resilient spacer member into firm engagement with said channel member at selected positions of adjustment to frictionally secure said channel member to said telescoping member.
Claim 3
Dependent Claim
24 words
The assembly of claim 1 in which said channel member has a generally C-shaped cross-section defined by a longitudinal slot in said channel member.
Claim 4
Dependent Claim
25 words
The assembly of claim 2 in which said cross-section is generally rectangular and said longitudinal slot is provided along one side of said channel member.
Claim 5
Dependent Claim
28 words
The assembly of claim 3 in which said telescoping member has a generally rectangular cross-section and said cross-section is slightly smaller than the cross-section of said channel member.
Claim 6
Dependent Claim
40 words
The assembly of claim 1 in which said channel member is a fixed leg portion and said telescoping member is an extendible leg portion and said extendible leg portion is slidably received in one end of said fixed leg portion.
Claim 7
Dependent Claim
15 words
The assembly of claim 1 including positive locking means operative only at longitudinally spaced positions.
Claim 8
Dependent Claim
40 words
The assembly of claim 6 in which said positive locking means is a spring detent normally extending through an aperture in said telescoping member and said channel member includes a plurality of longitudinally spaced apertures to receive said spring detent.
Claim 9
Dependent Claim
29 words
The assembly of claim 4 in which said resilient spacer member includes a pair of slide channels to receive the portions of said channel member adjacent said longitudinal slot.
Claim 10
Dependent Claim
26 words
The assembly of claim 8 in which said slide channels are formed by corresponding pairs of inner and outer flange portions joined by flange spacing means.
Claim 11
Dependent Claim
24 words
The assembly of claim 9 in which said outer flange portions are joined by an intermediate flange segment to form a continuous outer flange.
Claim 12
Dependent Claim
32 words
The assembly of claim 9 in which said inner flange portions include depending flange segments at their outer ends, said depending flange segments normally being substantially perpendicular to said inner flange portions.
Claim 13
Dependent Claim
35 words
The assembly of claim 11 in which said depending flange segments are generally wedge shaped, said wedge shaped flange segments and said inner flange portions being disposed between said telescoping member and said channel member.
Claim 14
Dependent Claim
26 words
The assembly of claim 1 in which said resilient spacer member is formed of a deformable plastic material capable of repeatedly recovering its size and shape.
Claim 15
Dependent Claim
25 words
The assembly of claim 9 in which said means for urging said resilient member into firm engagement with said channel member includes a pressure plate.
Claim 16
Dependent Claim
29 words
The assembly of claim 14 in which said pressure plate is releasably secured to said telescoping member in engagement with said outer flange portions of said resilient spacer member.
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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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |