Patent US4188701A successfully refreshed from Google Patents.
US4188701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge pin remover
Assignee: Individual
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Filing: 1978-04-27
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Granted: 1980-02-19
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Expires: 1998-04-27
Abstract
Abstract For removing a hinge pin, a tool having a wedge-shaped head mounted on a shank equipped with a support projection to receive the hinge. The head includes an impact surface for hammering the wedge portion between the hinge and the head of the hinge pin. A striker plate perpendicular to the tool shank receives impact blows to dislodge the pin from the hinge.
Inventors
- 👤 Joseph B. Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/04; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/53835; Y10T29/53909; Y10T29/5393
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A tool for removing from a hinge a hinge pin having a bulbous head and a shank portion of fixed length, said tool comprising: a shank; a bifurcated wedge secured to the upper end of the shank for placement between the hinge and the bulbous head of the hinge pin and for engagement with the undersurface of the bulbous head of the hinge pin; a first striker plate substantially parallel to the shank and adapted to receive impacts to force the wedge between the hinge pin and the undersurface of the hinge pin head; a support foot secured to the shank a distance from the wedge less than the length of the shank portion of the hinge pin and aligned on the shank beneath the wedge, said support foot including a hinge receiving notch adapted to engage the hinge at least at two different points when the wedge is disposed between the hinge and the hinge pin head; a second striker plate substantially perpendicular to the shank and adapted to receive impacts to force the pin from the hinge when the wedge contacts the undersurface of the hinge pin head.
Claim 2
Dependent Claim
190 words
A tool for removing from a hinge a hinge pin having a bulbous head and a shank portion of fixed length, said tool comprising: a shank; a bifurcated wedge secured to the upper end of the shank for placement between the hinge and the bulbous head of the hinge pin and for engagement with the undersurface of the bulbous head of the hinge pin; a first striker plate substantially parallel to the shank and adapted to receive impacts to force the wedge between the hinge pin and the undersurface of the hinge pin head; a support foot secured to the shank a distance from the wedge less than the length of the shank portion of the hinge pin and aligned on the shank beneath the wedge, said support foot including a hinge receiving notch adapted to engage the hinge at least at two different points when the wedge is disposed between the hinge and the hinge pin head; a second striker plate substantially perpendicular to the shank and adapted to receive impacts to force the pin from the hinge when the wedge contacts the undersurface of the hinge pin head.
Claim 3
Dependent Claim
41 words
The tool as in claim 1 wherein said bifurcated wedge includes an upper surface, a lower surface substantially parallel to said upper surface, and a tapered end surface tapering from said lower surface of the wedge to said upper surface thereof.
Claim 4
Dependent Claim
37 words
The tool as in claim 1 wherein said wedge includes a notch in the end thereof to receive the shank portion of the hinge pin and to engage the shank portion at least at two different points.
Claim 5
Dependent Claim
28 words
The tool as in claim 1 wherein said first striker plate is integrally joined with said bifurcated wedge and is arranged on the shank opposite the bifurcated wedge.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |