Patent US4964193A successfully refreshed from Google Patents.
US4964193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge
Assignee: E R WAGNER MANUFACTURING COMPANY A WISCONSIN CORP
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Filing: 1987-04-21
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Granted: 1990-10-23
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Expires: 2007-04-21
Abstract
Abstract The hinge has two leaves with interengaging knuckles. A plastic coated metal hinge pin extends through the knuckles and the knuckles are crimped onto the plastic coated hinge pin. The tighter the knuckles grip the pin the more the plastic is deformed and the greater will be the torque required to operate the hinge. The plastic is extruded onto the pin to bond the plastic to the pin.
Inventors
- 👤 Peter R. Rommelfaenger
- 👤 Thomas A. Neuwirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:43
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/08; E05D11/082; E05D5/00; E05D5/10; E05D2005/102; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A hinge comprising, first and second leaves having interengaging formed barrels with aligned apertures through the barrels, a hinge pin, a plastic coating bonded on the pin, said hinge pin being mounted in said apertures and said barrels being crimped onto the hinge pin to engage and radially compress said plastic coating, said plastic coating having a self-lubricating characteristic when lightly compressed and gripped by said barrels and developing increasing resistance to hinge operation as the barrels compress and grip said coating with increasing force.
Claim 2
Dependent Claim
85 words
A hinge comprising, first and second leaves having interengaging formed barrels with aligned apertures through the barrels, a hinge pin, a plastic coating bonded on the pin, said hinge pin being mounted in said apertures and said barrels being crimped onto the hinge pin to engage and radially compress said plastic coating, said plastic coating having a self-lubricating characteristic when lightly compressed and gripped by said barrels and developing increasing resistance to hinge operation as the barrels compress and grip said coating with increasing force.
Claim 3
Dependent Claim
57 words
A hinge comprising, first and second leaves having interengaging knuckles, a metal hinge pin extending through said knuckles, a plastic coating bonded on said hinge pin, said knuckles being crimped into said coated hinge pin to compress and grip the plastic with the degree of compression of the plastic determining the torque required to operate the hinge.
Claim 4
Dependent Claim
57 words
A hinge comprising, first and second leaves having interengaging knuckles, a metal hinge pin extending through said knuckles, a plastic coating bonded on said hinge pin, said knuckles being crimped into said coated hinge pin to compress and grip the plastic with the degree of compression of the plastic determining the torque required to operate the hinge.
References Cited (Backward Citations)
US4256388A
Cited
US4630333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |