US3840059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hack saws
Assignee: Individual
•
Filing: 1973-04-23
•
Granted: 1974-10-08
•
Expires: 1993-04-23
Abstract
Abstract A hack saw comprising a frame, a saw blade, and a handle. The handle as well as the saw blade can be positioned on any one of a number of cutting angles. In a preferred form, one end of the handle means serves as one pole of the saw blade holding means with the opposite end of the saw blade being secured by an opposite pole member which is threaded to recieve a thumb nut. Both pole members are journaled on the ends of the frame and have their axis traversing the longitudinal axis of the saw blade.
Inventors
- 👤 B Ingro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:04
CPC Classifications
B; B23; B23D; B23D51/00; B23D51/08; B23D51/12; B23D49/00; B23D49/10; B23D49/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
299 words
A hack saw for use with a flat elongated blade having a longitudional wxis and teeth along one longitudional cutting edge thereof projecting in one direction away from said londtudional axis, comprising: a pair of pole member for connection to opposite ends of said blade in fixed angular relationship to the plane of said blade, a generally U-shaped frame substantially in one plane and including an elongated base portion and a pair of end portions projecting from the opposite ends of said base portion, support means on the terminal ends of said end portions supporting said pole members to support said blade in generally parallel relation to said base portion of said frame, said support means being arranged for angular adjustment of the position of said pole members about an axis aligned with said longitudional axis of said blade and for angular adjustment of the plane of said blade relative to the plane of said frame to positions including a first position in which the plane of said blade is parallel to the plane of said frame and in which said teeth project in a direction away from said base portion of said frame and second and third positions in both of which the plane of said blade is transverse to the plane of said frame and in which said teeth project in opposite directions from the plane of said frame, and handle means rigidly connected to one of said pole members and extending in generally coplanar relation to said blade and away from said longitudional axis of said blade in a direction opposite said one direction of projection of said teeth with all portions of said handle means on one side of the plane transverse to the plane of said blade and through the longitudional cutting edge thereof.
Claim 2
Dependent Claim
299 words
A hack saw for use with a flat elongated blade having a longitudional wxis and teeth along one longitudional cutting edge thereof projecting in one direction away from said londtudional axis, comprising: a pair of pole member for connection to opposite ends of said blade in fixed angular relationship to the plane of said blade, a generally U-shaped frame substantially in one plane and including an elongated base portion and a pair of end portions projecting from the opposite ends of said base portion, support means on the terminal ends of said end portions supporting said pole members to support said blade in generally parallel relation to said base portion of said frame, said support means being arranged for angular adjustment of the position of said pole members about an axis aligned with said longitudional axis of said blade and for angular adjustment of the plane of said blade relative to the plane of said frame to positions including a first position in which the plane of said blade is parallel to the plane of said frame and in which said teeth project in a direction away from said base portion of said frame and second and third positions in both of which the plane of said blade is transverse to the plane of said frame and in which said teeth project in opposite directions from the plane of said frame, and handle means rigidly connected to one of said pole members and extending in generally coplanar relation to said blade and away from said longitudional axis of said blade in a direction opposite said one direction of projection of said teeth with all portions of said handle means on one side of the plane transverse to the plane of said blade and through the longitudional cutting edge thereof.
References Cited (Backward Citations)
US686227A
Cited
FR525161A
Cited
US1518488A
Cited
US1865026A
Cited
US1905940A
Cited
US1950973A
Cited
US2102782A
Cited
US2101362A
Cited
US2204390A
Cited
US2912025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |