US3731380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain-saw extension pole
Assignee: Individual
•
Filing: 1971-12-20
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Granted: 1973-05-08
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Expires: 1991-12-20
Abstract
Abstract An extension pole for a chain saw with an elongate handle with front and rear ends and occurring in a common vertical plane with the center of gravity of the saw and an axis concentric with the designed longitudinal axis of rotation for the saw, said pole having mounting means releasably engageable with the saw handle with the axis of the pole substantially concentric with and projecting rearwardly from the handle. Manually operable throttle control means carried by the mounting means to engage a throttle trigger carried by the handling and including an operating line extending longitudinally of the pole. The mounting means engaging only the handle of the saw and being releasably secured with the saw without engagement of fasteners in and with the saw structure.
Inventors
- 👤 R Mathiesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:04
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/0016; A; A01; A01G; A01G3/00; A01G3/08; B27B17/0008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
In combination, a motor driven chain Saw with an elongate motor housing with front and rear ends and top, bottom and side surfaces, a flat vertical chain supporting blade projecting forwardly from the front end of the housing and a handle with an elongate substantially horizontal hand grip portion in spaced relationship above the top of the housing and front and rear leg portions depending from the hand grip portion and secured to said housing, said handle occurring on a vertical plane near the center of gravity of the saw and the axis of said grip portion occurring adjacent the designed axis of axial rotation of the saw; an elongate extension pole with inner and outer ends, mounting means at the outer end of the pole and releasably engaging said handle with the pole in substantial axial alignment with the hand grip portion and projecting rearwardly from the handle.
Claim 2
Dependent Claim
149 words
In combination, a motor driven chain Saw with an elongate motor housing with front and rear ends and top, bottom and side surfaces, a flat vertical chain supporting blade projecting forwardly from the front end of the housing and a handle with an elongate substantially horizontal hand grip portion in spaced relationship above the top of the housing and front and rear leg portions depending from the hand grip portion and secured to said housing, said handle occurring on a vertical plane near the center of gravity of the saw and the axis of said grip portion occurring adjacent the designed axis of axial rotation of the saw; an elongate extension pole with inner and outer ends, mounting means at the outer end of the pole and releasably engaging said handle with the pole in substantial axial alignment with the hand grip portion and projecting rearwardly from the handle.
Claim 3
Dependent Claim
118 words
A structure as set forth in claim 1 wherein said mounting means includes an elongate receiver with front and rear ends, pole engaging means at its rear end, a downwardly and forwardly opening recess with side surfaces slidably engaged with opposite sides of the handle and an upper and rear surface engaged with upper and rear surfaces of the hand grip and rear leg portions of the handle, an elongate keeper plate engaged in the recess between the side surfaces thereof and engaged with a lower surface of the hand grip portion and screw fastener means engaged in and between the carrier and the plate whereby the plate holds the handle in tight seated engagement in the recess.
Claim 4
Dependent Claim
131 words
A structure as set forth in claim 1 wherein said saw includes a throttle trigger adjacent the forward lower side of said hand grip portion and adapted to be manually engaged and urged upwardly relative to the handle to increase the operating speed of the saw, and throttle control means carried by said mounting means, said control means comprising a shaft rotatably carried by the mounting means on a horizontal transverse axis, an elongate foot having an inner end fixed to the shaft and an outer end engaging the trigger, a lever arm with an inner end fixed to the shaft, an elongate operating line extending longitudinally of the pole and having a manually engageable inner end and an outer end secured to the outer free end of the lever arm.
Claim 5
Dependent Claim
131 words
A structure as set forth in claim 2 wherein said saw includes a throttle trigger adjacent the forward lower side of said hand grip portion and adapted to be manually engaged and urged upwardly relative to the handle to increase the operating speed of the saw, and throttle control means carried by said mounting means, said control means comprising a shaft rotatably carried by the mounting means on a horizontal transverse axis, an elongate foot having an inner end fixed to the shaft and an outer end engaging the trigger, a lever arm with an inner end fixed to the shaft, an elongate operating line extending longitudinally of the pole and having a manually engageable inner end and an outer end secured to the outer free end of the lever arm.
Claim 6
Dependent Claim
16 words
A structure as set forth in claim 4 wherein said keeper plate rotatably carries the shaft.
Claim 7
Dependent Claim
79 words
A structure as set forth in claim 4 wherein said keeper plate rotatably carries the shaft, said foot projecting forwardly and upwardly to engage said trigger, said shaft projecting laterally outwardly from below the receiver at one side thereof, said lever arm projecting upwardly from the shaft adjacent said one side of the receiver spring means operatively coupled with the upper free end of the lever arm and normally yieldingly urging said free end of the lever arm forwardly.
References Cited (Backward Citations)
US2703928A
Cited
US2832136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |