SE7704421L - MOTOR SAW SAFETY BRAKE - Google Patents
MOTOR SAW SAFETY BRAKEInfo
- Publication number
- SE7704421L SE7704421L SE7704421A SE7704421A SE7704421L SE 7704421 L SE7704421 L SE 7704421L SE 7704421 A SE7704421 A SE 7704421A SE 7704421 A SE7704421 A SE 7704421A SE 7704421 L SE7704421 L SE 7704421L
- Authority
- SE
- Sweden
- Prior art keywords
- saw
- safety bar
- brake
- detent
- actuating
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
- B27B17/083—Devices for arresting movement of the saw chain
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Braking Arrangements (AREA)
Abstract
A hand portable chain saw with a movable safety bar for actuating a chain brake has a bracket and a lineally-acting spring which together provide a detent for holding the safety bar in the nonbraking operating position, but yet accelerate the braking movement of the safety bar upon disengagement from the detent. The carrying handle for a portable chain saw encircles the top and both sides of the saw housing to enhance both operator safety and convenience. The brake-actuating safety bar on the saw has a similar wrap-around contour to ensure engagement by the operator in the event of untoward movement of the saw for essentially any sawing position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/678,169 US4059895A (en) | 1974-10-15 | 1976-04-19 | Full position safety brake for portable chain saw |
Publications (3)
Publication Number | Publication Date |
---|---|
SE7704421L true SE7704421L (en) | 1977-10-20 |
SE434135B SE434135B (en) | 1984-07-09 |
SE434135C SE434135C (en) | 1989-08-14 |
Family
ID=24721681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7704421A SE434135C (en) | 1976-04-19 | 1977-04-18 | CHAIN SAW WITH SECURITY BRAKE |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1059011A (en) |
DE (1) | DE2716448A1 (en) |
SE (1) | SE434135C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8300200L (en) * | 1982-01-18 | 1983-07-19 | Sachs Dolmar Gmbh | BRAKE DEVICE FOR BRAKEING THE CHAIN CHAIN AT A TREADABLE CHAIN SAW CHAIN |
SE459240B (en) * | 1982-05-10 | 1989-06-19 | Mcculloch Corp | BRAKE SYSTEM FOR CHAIN SAW |
DE3607376A1 (en) * | 1986-03-06 | 1987-09-10 | Metabowerke Kg | PORTABLE MOTOR CHAIN SAW WITH A FRICTION BRAKE TO BRAKE THE SAW CHAIN |
DE4120875C2 (en) * | 1991-06-21 | 2000-06-08 | Stihl Maschf Andreas | Motor chain saw with brake device integrated in the sprocket cover |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964333A (en) * | 1974-10-15 | 1976-06-22 | Mcculloch Corporation | Safety braking mechanism for a portable chain saw |
US3934345A (en) * | 1974-10-15 | 1976-01-27 | Mcculloch Corporation | Snap-acting over-center chain saw safety brake and method of operation thereof |
-
1977
- 1977-03-15 CA CA274,015A patent/CA1059011A/en not_active Expired
- 1977-04-14 DE DE19772716448 patent/DE2716448A1/en active Granted
- 1977-04-18 SE SE7704421A patent/SE434135C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE434135C (en) | 1989-08-14 |
SE434135B (en) | 1984-07-09 |
CA1059011A (en) | 1979-07-24 |
DE2716448A1 (en) | 1977-10-27 |
DE2716448C2 (en) | 1987-03-05 |
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Legal Events
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