Patent US3612121A successfully refreshed from Google Patents.
US3612121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact tool
Assignee: Estwing Manufacturing Co Inc
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Filing: 1970-04-23
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Granted: 1971-10-12
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Expires: 1990-04-23
Abstract
Abstract The tool has a head with a tang to which is brazed a tubular steel handle. The handle is generally elliptical in cross section, and a reinforcing rib is located adjacent the head and lies in the plane of the major axis of the handle ellipse. The reinforcing rib is secured both to the tang and to the inside of the tubular steel handle.
Inventors
- 👤 Ernest O Estwing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:34
CPC Classifications
B; B25; B25D; B25D1/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
In an impact tool having a head portion set crosswise of an elongated tubular handle and both lying in a plane in which the tool is ordinarily used, a tang integral with the head and extending laterally therefrom, and means for securing the tubular handle to the tang; the improvement comprising: a reinforcing rib in the tubular handle; the rib being relatively thin in thickness and lying in the plane of use; the rib having longitudinal edges with a press fit in the tubular handle and one end engaged with the tang; and means for securing the one end of the rib to the tang; whereby the handle is reinforced in the plane of use.
Claim 2
Dependent Claim
115 words
In an impact tool having a head portion set crosswise of an elongated tubular handle and both lying in a plane in which the tool is ordinarily used, a tang integral with the head and extending laterally therefrom, and means for securing the tubular handle to the tang; the improvement comprising: a reinforcing rib in the tubular handle; the rib being relatively thin in thickness and lying in the plane of use; the rib having longitudinal edges with a press fit in the tubular handle and one end engaged with the tang; and means for securing the one end of the rib to the tang; whereby the handle is reinforced in the plane of use.
Claim 3
Dependent Claim
34 words
An impact tool as set forth in claim 1 wherein the tubular handle is elliptical in cross section, and the reinforcing rib lies in the plane of the major axis of the handle ellipse.
Claim 4
Dependent Claim
32 words
An impact tool as set forth in claim 2 wherein the reinforcing rib is a flat plate having a width approximating the major axis of the internal ellipse of the tubular handle
Claim 5
Dependent Claim
27 words
An impact tool as set forth in claim 2 wherein the tang has an elliptical cross section, and the tubular handle is shaped to encompass the tang.
Claim 6
Dependent Claim
86 words
A hand striking tool having a head and a handle, characterized in that the handle comprises a hollow, thin-walled, metal tubular member extending from the head; a thin, metal, reinforcing rib in the tubular handle and extending in the direction of the head portion of the tool; said reinforcing rib having longitudinal edges tightly engageD with the inside of the tubular handle and one end engaged with the head; and means for securing the longitudinal edges and the one end to the handle and head respectively.
Claim 7
Dependent Claim
86 words
A hand striking tool having a head and a handle, characterized in that the handle comprises a hollow, thin-walled, metal tubular member extending from the head; a thin, metal, reinforcing rib in the tubular handle and extending in the direction of the head portion of the tool; said reinforcing rib having longitudinal edges tightly engageD with the inside of the tubular handle and one end engaged with the head; and means for securing the longitudinal edges and the one end to the handle and head respectively.
Claim 8
Dependent Claim
46 words
A hand striking tool as set forth in claim 5 wherein the head includes a short tang disposed in the end of the handle and brazed thereto, the one end of the reinforcing rib is engaged with the tang, and the last-mentioned means is a brazing.
Claim 9
Dependent Claim
48 words
A hand striking tool as set forth in claim 6 wherein the tang has an elliptical cross section, the tubular handle is elliptical in cross section and shaped to encompass the tang, and the reinforcing rib lies in the plane of the major axis of the handle ellipse.
Claim 10
Dependent Claim
38 words
A hand striking tool as set forth in claim 7 wherein the reinforcing rib is a solid flat plate of rectangular cross section and having a width approximating the major axis of the internal ellipse of the handle.
Claim 11
Dependent Claim
54 words
A hand striking tool as set forth in claim 5 wherein the tubular handle is elliptical in cross section; and the reinforcing rib is a solid flat plate of rectangular cross section and having a width equal to the major axis of the internal ellipse of the handle and having a press fit therewith.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |