Patent US3781074A successfully refreshed from Google Patents.
US3781074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide top desk
Assignee: Cornwell Company Inc
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Filing: 1972-04-21
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Granted: 1973-12-25
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Expires: 1992-04-21
Abstract
Abstract A desk suitable for housing a sewing machine is disclosed. The top of the desk has two sliding portions which can slide apart to allow a third hinged center section to be swung up into place between the two sliding portions. A sewing machine may be mounted on the center section and can be hidden-from sight when the center section is lowered.
Inventors
- 👤 R Trueblood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:32
CPC Classifications
A; A47; A47B; A47B29/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
130 words
A desk having a sturdy expansible work surface and comprising: a. a top work surface including two guide portions, b. means connecting said two guide portions to maintain them in a spaced apart relation, c. support means extending downwardly from opposite ends of said guide portions for supporting said guide portions, d. said top work surface also including two sliding portions each slidably engaging with said two guide porTions and positionable adjacent each other, e. a center section hingedly connected to one of said guide portions and arranged to be swingably positionable as an additional portion of said top work surface when said two sliding portions are slid apart from each other and swingably positionable below the top work surface to allow said two sliding portions to be slid together.
Claim 2
Dependent Claim
130 words
A desk having a sturdy expansible work surface and comprising: a. a top work surface including two guide portions, b. means connecting said two guide portions to maintain them in a spaced apart relation, c. support means extending downwardly from opposite ends of said guide portions for supporting said guide portions, d. said top work surface also including two sliding portions each slidably engaging with said two guide porTions and positionable adjacent each other, e. a center section hingedly connected to one of said guide portions and arranged to be swingably positionable as an additional portion of said top work surface when said two sliding portions are slid apart from each other and swingably positionable below the top work surface to allow said two sliding portions to be slid together.
Claim 3
Dependent Claim
34 words
The desk of claim 1 which additionally includes on each sliding portion a lift lid stop protruding laterally from the lower edge of each sliding portion in the direction of the other sliding portion.
Claim 4
Dependent Claim
41 words
The desk of claim 1 in which each of said guide portions is grooved along almost its entire length and in which each of said sliding means has protruding groove engaging means for providing the sliding engagement with said guide portions.
Claim 5
Dependent Claim
39 words
The desk of claim 1 which additionally includes: storage means below each end of said guide portions which define a kneehole below the center of one of said guide portions, means connecting said storage means to said guide portions.
Claim 6
Dependent Claim
16 words
The desk of claim 4 which additionally includes a sewing machine mounted to said center section.
Claim 7
Dependent Claim
16 words
The desk of claim 1 which additionally includes a sewing machine mounted to said center section.
Claim 8
Dependent Claim
43 words
The desk of claim 6 which additionally includes: positioning means connected to one of said guide portions for maintaining the plane of said center section at about a 25* angle to vertical when said center section is swung below the top work surface.
Claim 9
Dependent Claim
21 words
The desk of claim 7 in which said positioning means includes a shelf which is parallel to the top work surface.
Claim 10
Dependent Claim
34 words
The desk of claim 8 which additionally includes on each sliding portion a lift lid stop protruding laterally from the lower edge of each sliding portion in the direction of the other sliding portion.
Claim 11
Dependent Claim
41 words
The desk of claim 9 in which each of said guide portions is grooved along almost its entire length and in which each of said sliding means has protruding groove engaging means for providing the sliding engagement with said guide portions.
Claim 12
Dependent Claim
19 words
The desk of claim 1 in which said sliding portions are positionable adjacent each other along a straight line.
Claim 13
Dependent Claim
28 words
The desk of claim 1 in which said center section is adjacent both of said guide portions when positioned as an additional portion of said top work surface.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |