US5619834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slate positioning device
Assignee: Individual
•
Filing: 1995-12-05
•
Granted: 1997-04-15
•
Expires: 2015-12-05
Abstract
Abstract A slate positioning device comprises a positioning plate. The positioning plate has a horizontal plate and the first and the second longitudinal plates at two ends of the horizontal plate. The first longitudinal plate has a hole. The second longitudinal plate has an upper convex edge and a lower convex edge. A pad plate has a slot and a concave surface to cover the first longitudinal plate. The upper convex edge and the lower convex edge are inserted in the corresponding grooves of the corresponding slates. A screw rod passes through the hole and the slot to fasten the first longitudinal plate and the pad plate.
Inventors
- 👤 Laurance Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:11
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0853; E04F13/0855
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
A slate positioning device comprising: a positioning plate which has a horizontal plate and a first and a second longitudinal plates at two ends of said horizontal plate; said first longitudinal plate having a hole and a convex surface; said second longitudinal plate having an upper convex edge and a lower convex edge; a pad plate having a slot and a concave surface to cover said convex surface of said first longitudinal plate; and a screw rod passing through said hole and said slot to fasten said first longitudinal plate and said pad plate together.
Claim 2
Dependent Claim
95 words
A slate positioning device comprising: a positioning plate which has a horizontal plate and a first and a second longitudinal plates at two ends of said horizontal plate; said first longitudinal plate having a hole and a convex surface; said second longitudinal plate having an upper convex edge and a lower convex edge; a pad plate having a slot and a concave surface to cover said convex surface of said first longitudinal plate; and a screw rod passing through said hole and said slot to fasten said first longitudinal plate and said pad plate together.
Claim 3
Dependent Claim
141 words
A slate positioning device comprising: an L-shaped plate, a horizontal positioning plate and a pad plate; a through hole formed on said horizontal positioning plate; a longitudinal plate which has, an upper convex edge and a lower convex edge disposed at one end of said positioning plate; said L-shaped plate having a horizontal plate and a pendent plate; said horizontal plate having an orifice; said pendent plate having an opening and a convex surface; said pad plate having a slot and a concave surface to cover said convex surface of said pendent plate; said positioning plate disposed on said horizontal plate; a screw rod passing through said opening and said slot to fasten said pendent plate and said pad plate; and a bolt passing through said through hole and said orifice to fasten said positioning plate and said horizontal plate together.
Claim 4
Dependent Claim
141 words
A slate positioning device comprising: an L-shaped plate, a horizontal positioning plate and a pad plate; a through hole formed on said horizontal positioning plate; a longitudinal plate which has, an upper convex edge and a lower convex edge disposed at one end of said positioning plate; said L-shaped plate having a horizontal plate and a pendent plate; said horizontal plate having an orifice; said pendent plate having an opening and a convex surface; said pad plate having a slot and a concave surface to cover said convex surface of said pendent plate; said positioning plate disposed on said horizontal plate; a screw rod passing through said opening and said slot to fasten said pendent plate and said pad plate; and a bolt passing through said through hole and said orifice to fasten said positioning plate and said horizontal plate together.
References Cited (Backward Citations)
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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) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |