Patent US5619834A successfully refreshed from Google Patents.
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 09:23
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)
US3350830A
Cited
FR2532350A1
Cited
US4523413A
Cited
GB2164073A
Cited
US5239798A
Cited
DE4001806A1
Cited
US5265396A
Cited
JPH04272366A
Cited
JPH0518098A
Cited
US5280690A
Cited
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 |