Patent US3140152A successfully refreshed from Google Patents.
Patent US3680608A successfully refreshed from Google Patents.
US3680608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw
Assignee: Solo Kleinmotoren GmbH
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Filing: 1970-02-02
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Granted: 1972-08-01
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Expires: 1990-02-02
Abstract
Abstract A portable chain saw having an elongated chain carrier about whose circumferential edge portion a saw chain travels. Grip means is rigid with the carrier for gripping by the hands of an operator. An internal combustion engine is provided for imparting to the chain its travelling movement along the edge portion of the carrier. Connecting means connects the combustion engine with the carrier so that they constitute a unit but without transmitting vibrations between the combustion engine and the carrier.
Inventors
- 👤 Heinz Emmerich
- 👤 Eggert Bulk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:47
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/0033
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
A portable chain saw, comprising an elongated chain carrier having a first longitudinal axis and a circumferential edge portion; a housing rigidly connected with said carrier; a saw chain mounted on said carrier for movement circumferentially of the same along said edge portion; grip means rigid with said carrier for gripping by the hands of an operator; an internal combustion engine for imparting to said chain saw said movement and having a crankshaft extending transversely of the elongation of said carrier and a reciprocable piston having a second longitudinal axis normal to said first axis; vibration-damping elements mounting said combustion engine; and spacing Means, comprising a spacing element pivotally connected with both said housing and said combustion engine so that said carrier and combustion engine are prevented from relative movement longitudinally of said carrier and transmission of vibrations between said combustion engine and said carrier is suppressed.
Claim 2
Dependent Claim
147 words
A portable chain saw, comprising an elongated chain carrier having a first longitudinal axis and a circumferential edge portion; a housing rigidly connected with said carrier; a saw chain mounted on said carrier for movement circumferentially of the same along said edge portion; grip means rigid with said carrier for gripping by the hands of an operator; an internal combustion engine for imparting to said chain saw said movement and having a crankshaft extending transversely of the elongation of said carrier and a reciprocable piston having a second longitudinal axis normal to said first axis; vibration-damping elements mounting said combustion engine; and spacing Means, comprising a spacing element pivotally connected with both said housing and said combustion engine so that said carrier and combustion engine are prevented from relative movement longitudinally of said carrier and transmission of vibrations between said combustion engine and said carrier is suppressed.
Claim 3
Dependent Claim
43 words
A chain saw as defined in claim 1, said combustion engine having a casing portion surrounding said crankshaft; further comprising a bolt mounted on said housing; and wherein said spacing element is pivotably mounted on said bolt and on said casing portion, respectively.
Claim 4
Dependent Claim
60 words
A chain saw as defined in claim 1; and further comprising a plurality of first auxiliary components rigidly connected with said carrier, and a plurality of second auxiliary components rigidly connected with said combustion engine so that the transmission of vibration between said first and second auxiliary components is precluded by the presence of said damping and said spacing means.
Claim 5
Dependent Claim
37 words
A chain saw as defined in claim 3, wherein said second auxiliary components include a blower for cooling air, an ignition arrangement, a muffler, a starter unit, a centrifugal clutch, said rotary pinion and a crankshaft casing.
Claim 6
Dependent Claim
32 words
A chain saw as defined in claim 4, wherein said first auxiliary components include a fuel tank, an oil tank, a carburetor, an air filter and covers for openings in said housing.
Claim 7
Dependent Claim
43 words
A chain saw as defined in claim 5, said housing and said crankshaft casing being provided with juxtaposed wall portions; and wherein said vibration damping elements are arranged between and connected to said juxtaposed wall portions of said housing and said crankshaft casing.
Claim 8
Dependent Claim
33 words
A chain saw as defined in claim 1; further comprising a carburetor mounted on said housing; and a vibration damping fuel conduit member connecting said carburetor with said cylinder of said combustion engine.
Claim 9
Dependent Claim
28 words
A chain saw as defined in claim 1, and further comprising a rotary pinion rotating with said crankshaft and transmitting motion from said combustion engine to said chain.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |