| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Method for cutting substantially horizontal cantilevered objects such as logs, and apparatus for carrying out the method | EP83850168 | 1983-06-17 | EP0126834A3 | 1985-09-11 | Lindblom, Thore; Hedin, Jan-Erik; Wickström, Sven |
Cutting horizontal, cantilevering objects of splittable material, such as de-barked tree trunks and the like is carried out with the aid of a guided, endless circulating saw chain (10), the upper cutting part of which is moved from below and upwards through the object. The lower edge portions of the cut surfaces at the cut are allowed to bear against each other under the action of the bending moment of the cantilevering object, while the return portion of the saw chain in the cutting area is kept free from the cut surfaces. The saw chain is guided by a chain guide (12) extending curvilinearly under the object and guides the return part of the chain. The chain guide and the guided return part are both outside and below the object during the whole of the cutting operation, while the upper cutting portion of the chain runs straight between the end points of the curved portion of the chain guide. Towards the end of the cutting operation, the part of the object not yet sawn through is subjected solely to short- duration tensional stress and substantially not for bending stress, whereby splitting the material is avoided. |
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| 2 | Method for cutting substantially horizontal cantilevered objects such as logs, and apparatus for carrying out the method | EP83850168.2 | 1983-06-17 | EP0126834A2 | 1984-12-05 | Lindblom, Thore; Hedin, Jan-Erik; Wickström, Sven |
Cutting horizontal, cantilevering objects of splittable material, such as de-barked tree trunks and the like is carried out with the aid of a guided, endless circulating saw chain (10), the upper cutting part of which is moved from below and upwards through the object. The lower edge portions of the cut surfaces at the cut are allowed to bear against each other under the action of the bending moment of the cantilevering object, while the return portion of the saw chain in the cutting area is kept free from the cut surfaces. The saw chain is guided by a chain guide (12) extending curvilinearly under the object and guides the return part of the chain. The chain guide and the guided return part are both outside and below the object during the whole of the cutting operation, while the upper cutting portion of the chain runs straight between the end points of the curved portion of the chain guide. Towards the end of the cutting operation, the part of the object not yet sawn through is subjected solely to short- duration tensional stress and substantially not for bending stress, whereby splitting the material is avoided. |
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| 3 | DELIMBING UNIT FOR MANUAL POWER SAW | EP81902949.0 | 1981-10-27 | EP0063147A1 | 1982-10-27 | KULLBERG, Knut |
| Unite d'elagage pour tronconneuse comprenant une scie articulee (3, 4) et un guide de scie articule (2) pouvant etre fixe sur le boitier (1) d'une tronconneuse. Le dispositif de guidage de la scie articulee s'avance depuis le boitier de la tronconneuse et comprend une section a nez plie (22', 23', 24) qui guide la scie articulee sur un chemin sensiblement semi-circulaire sur un plan transversal par rapport a la direction d'avancement, les dents de la scie etant orientees sensiblement vers l'avant. Pendant l'operation d'elagage la forme semi-circulaire de la section de nez est maintenue contre la peripherie ronde du tronc et deplacee vers l'avant le long de celui-ci. L'unite d'elagage facilite et accelere considerablement le demembrement, tout en reduisant les dangers d'accident et permettant une position de travail nettement amelioree. | ||||||
| 4 | Method of cutting substantially horizontal cantilevered objects such as logs, and apparatus for carrying out the method | US502128 | 1983-06-08 | US4513799A | 1985-04-30 | Thore Lindblom; Jan-Erik Hedin; Sven Wickstrom |
| Cutting horizontal, cantilevering objects of splittable material, such as de-barked tree trunks and the like is carried out with the aid of a guided, endless circulating saw chain (10), the upper cutting part of which is moved from below and upwards through the object. The lower edge portions of the cut surfaces at the cut are allowed to bear against each other under the action of the bending moment of the cantilevering object, while the return portion of the saw chain in the cutting area is kept free from the cut surfaces. The saw chain is guided by a chain guide (12) extending curvilinearly under the object and guides the return part of the chain. The chain guide and the guided return part are both outside and below the object during the whole of the cutting operation, while the upper cutting portion of the chain runs straight between the end points of the curved portion of the chain guide.Towards the end of the cutting operation, the part of the object not yet sawn through is subjected solely to short-duration tensional stress and substantially not to bending stress, whereby splitting the material is avoided. | ||||||
| 5 | Power operated chain saw | US32299763 | 1963-11-12 | US3260288A | 1966-07-12 | CURRIE ROBERT L |
| 6 | Pulpwood chain sawing machine | US2299448 | 1948-04-24 | US2554989A | 1951-05-29 | JOHNSON ALFRED J; MCCORMACK FOSTER D |
| 7 | Chain-saw | US6797336 | 1936-03-09 | US2109702A | 1938-03-01 | ALFONSO LANGE |
| 8 | Wood-sawing machinery | US67995433 | 1933-07-11 | US1952270A | 1934-03-27 | ALEXANDER MARCH; JOHN MARCH |
| 9 | Portable chain saw | US15746826 | 1926-12-28 | US1766013A | 1930-06-24 | JOSEPH DAW |
| 10 | Chain saw | US4840525 | 1925-08-05 | US1598853A | 1926-09-07 | JOSEPH DAW |
| 11 | Wood-sawing machine | US43786321 | 1921-01-17 | US1420950A | 1922-06-27 | EDWIN ELDER JAMES |
| 12 | Chain saw for cutting brush and small trees | US24588D | USRE24588E | 1959-01-13 | ||
| 13 | Chain saw for cutting brush and small trees | US49193055 | 1955-03-03 | US2797717A | 1957-07-02 | BUDD JOSEPH H |
| 14 | Bow type chain saw construction | US36862053 | 1953-07-17 | US2731048A | 1956-01-17 | SEIZERT ROBERT D |
| 15 | Chain saw | US55396544 | 1944-09-14 | US2447298A | 1948-08-17 | WHITLOCK RAYMOND C |
| 16 | Power-driven chain-saw assembly | US16371927 | 1927-01-26 | US1723125A | 1929-08-06 | BENS SAMUEL J |
| 17 | Portable tree-sawing apparatus | US14876626 | 1926-11-16 | US1717547A | 1929-06-18 | BENS SAMUEL J |
| 18 | Power saw | US73714724 | 1924-09-11 | US1601201A | 1926-09-28 | JOSEPH DAW |
| 19 | Portable saw | US2360625 | 1925-04-16 | US1584630A | 1926-05-11 | MEIGHAN WILLIAM A |
| 20 | Crosscut saw | US56950922 | 1922-06-19 | US1539818A | 1925-06-02 | ARSNEAU EDWARD P |
