US3650028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound action shears
Assignee: Parker Manufacturing Co
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Filing: 1970-04-24
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Granted: 1972-03-21
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Expires: 1990-04-24
Abstract
Abstract Hedge shears having increased cutting efficiency and operator shock isolation are provided by this invention. Improved cutting efficiency is provided by a cam actuated force multiplier interconnection of the blades. Shock isolation is provided by the use of resilient means to limit the blade travel.
Inventors
- 👤 Gabriel M La Pointe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:01
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/04; A01G3/047; A01G3/0475
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
Compound action shears comprising, first and second blade means disposed in parallel relationship, each of said blade means having a cutting portion and a base portion, stud means positioned in the base portion of the first blade means, elongated slot means positioned in the rear of the base portion of the second blade means so that the long axis of the slot means intersects the centerline of the second blade means at an angle of about 11* and adapted to receive the stud means of the first blade means, first handle means disposed adjacent the base portion of the first blade means, first fastening means fixedly interconnecting the first handle means and the first blade means, second handle means disposed adjacent the base portion of the second blade means, second fastening means pivotally interconnecting the second handle means and the second blade means, bolt means interconnecting the first handle means, first blade means and the second handle means, elongated recess means located in the base portion of the second blade means forward of the elongated slot means to receive the bolt means.
Claim 2
Dependent Claim
182 words
Compound action shears comprising, first and second blade means disposed in parallel relationship, each of said blade means having a cutting portion and a base portion, stud means positioned in the base portion of the first blade means, elongated slot means positioned in the rear of the base portion of the second blade means so that the long axis of the slot means intersects the centerline of the second blade means at an angle of about 11* and adapted to receive the stud means of the first blade means, first handle means disposed adjacent the base portion of the first blade means, first fastening means fixedly interconnecting the first handle means and the first blade means, second handle means disposed adjacent the base portion of the second blade means, second fastening means pivotally interconnecting the second handle means and the second blade means, bolt means interconnecting the first handle means, first blade means and the second handle means, elongated recess means located in the base portion of the second blade means forward of the elongated slot means to receive the bolt means.
Claim 3
Dependent Claim
30 words
Compound action shears according to claim 1, including first and second stop means secured to the first and second handle means respectively to limit relative travel of the handle means.
Claim 4
Dependent Claim
18 words
Compound action shears according to claim 2, in which the first and second stop means include resilient portions.
Claim 5
Dependent Claim
19 words
Compound action shears according to claim 1, in which the cutting portion of the second blade means is serrated.
Claim 6
Dependent Claim
21 words
Compound action shears according to claim 4, in which at least one of the blade means includes an arcuate cutting means.
References Cited (Backward Citations)
US122603A
Cited
US884281A
Cited
US1670201A
Cited
US2227531A
Cited
US2384822A
Cited
US3196540A
Cited
US3324549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |