Patent US3813776A successfully refreshed from Google Patents.
US3813776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration isolation system particularly adapted for use with a chain saw
Assignee: Mcculloch Corp
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Filing: 1973-05-15
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Granted: 1974-06-04
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Expires: 1993-05-15
Abstract
Abstract An improved vibration isolation system particularly adapted for use with a chain saw and characterized by a diaphragm, journaled on shaft means, and engaged on either side by resilient impedance means. The shaft means may be connected with a vibrating assembly which includes a chain saw engine and cutter chain, while the diaphragm means may be connected with a support means within which the vibrating assembly is resiliently supported.
Inventors
- 👤 R Frederickson
- 👤 W Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:20
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/422; F16F1/424; B; B27; B27B; B27B17/00; B27B17/0033; F16F2236/00; F16F2236/02; F16F2236/022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
164 words
In a chain saw having a vibrating assembly including an engine having a crankshaft and cutter chain means traversing a cutting path; support means including handle means; and a plurality of vibration isolation means interconnecting said vibrating assembly and said support means; the improvement comprising: at least one of said vibration isolation means including resilient diaphragm means having an aperture and extending transversely of said cutting path; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means; first mounting means connecting said diaphragm means with one of said vibrating assembly and said support means; and second mounting means connecting said shaft means with the other of said vibrating assembly and said support means.
Claim 2
Dependent Claim
164 words
In a chain saw having a vibrating assembly including an engine having a crankshaft and cutter chain means traversing a cutting path; support means including handle means; and a plurality of vibration isolation means interconnecting said vibrating assembly and said support means; the improvement comprising: at least one of said vibration isolation means including resilient diaphragm means having an aperture and extending transversely of said cutting path; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means; first mounting means connecting said diaphragm means with one of said vibrating assembly and said support means; and second mounting means connecting said shaft means with the other of said vibrating assembly and said support means.
Claim 3
Dependent Claim
175 words
In a chain saw having a vibrating assembly including an engine haVing a crankshaft and cutter chain means traversing a cutting path; support means including handle means; and a plurality of vibration isolation means interconnecting said vibrating assembly and said support means; the improvement comprising: at least one of said vibration isolation means including resilient diaphragm means having an aperture, extending transversely of said cutting path, and extending generally parallel with the axis of rotation of said crankshaft; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means; first mounting means connecting said diaphragm means with one of said vibrating assembly and said support means; and second mounting means connecting said shaft means with the other of said vibrating assembly and said support means.
Claim 4
Dependent Claim
175 words
In a chain saw having a vibrating assembly including an engine haVing a crankshaft and cutter chain means traversing a cutting path; support means including handle means; and a plurality of vibration isolation means interconnecting said vibrating assembly and said support means; the improvement comprising: at least one of said vibration isolation means including resilient diaphragm means having an aperture, extending transversely of said cutting path, and extending generally parallel with the axis of rotation of said crankshaft; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means; first mounting means connecting said diaphragm means with one of said vibrating assembly and said support means; and second mounting means connecting said shaft means with the other of said vibrating assembly and said support means.
Claim 5
Dependent Claim
46 words
A chain saw as described in claim 2: wherein said diaphragm means includes a mounting wall portion surrounding said aperture; and wherein said first and second resilient impedance means define a generally annular recess within which said mounting wall portion is radially slidably and rotatably received.
Claim 6
Dependent Claim
47 words
A chain saw as described in claim 3: wherein said mounting wall portion has flat parallel sides surrounding said aperture of said diaphragm means; and wherein said generally annular recess has flat parallel annular wall portions continguous with said flat parallel sides of said mounting wall portion.
Claim 7
Dependent Claim
46 words
A chain saw as described in claim 3: wherein said mounting wall portion has a convex, generally annular terminis surrounding said aperture of said diaphragm means; and wherein said generally annular recess has a generally concave, outwardly facing base, facing and engaging said generally convex terminis.
Claim 8
Dependent Claim
128 words
A chain saw as described in claim 3 where each of said plurality of vibration isolation means includes: resilient diaphragm means having an aperture and extending transversely of said cutting path; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means; first mounting means connecting said diaphragm means with one of said vibrating assembly and said support means; and second mounting means connecting said shaft means with the other of said vibrating assembly and said support means.
Claim 9
Dependent Claim
73 words
A vibration isolating unit comprising: resilient diaphragm means having an aperture; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; and second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means.
Claim 10
Dependent Claim
73 words
A vibration isolating unit comprising: resilient diaphragm means having an aperture; shaft means passing through said aperture of said diaphragm means, with said diaphragm means being journaled upon said shaft means; first, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging one side of said diaphragm means; and second, resilient, impedance means, mounted on said shaft means, and abuttingly and separably engaging an opposite side of said diaphragm means.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |