Claims
- 1. A throttle lever assembly for operating a throttle shaft adapted to control the flow of fuel to an internal combustion engine as the throttle shaft is moved between an idle position and a full throttle position in response to a throttle control, comprising
- (a) a throttle lever means adapted to be connected with the throttle shaft for moving the throttle shaft between the idle and the full throttle positions in response to movement of the throttle control;
- (b) throttle link means connected to said throttle lever means and to the throttle control for limiting the degree of force which may be applied to said throttle lever means when the throttle shaft reaches at least one of said idle and full throttle positions, said throttle link means including a link lever pivotally connected to said throttle lever means, and
- (c) throttle link stop means for limiting the rotation of said link lever relative to said throttle lever means to a predetermined maximum first breakover position, said throttle link stop means including a first stop on said link lever positioned to engage the throttle shaft when said link lever reaches said first breakover position, whereby control of said throttle shaft may be continued by the throttle control even if said throttle link means malfunctions.
- 2. A throttle lever assembly as defined in claim 1, wherein said link lever is rotatable between a normal operating position and said first breakover position and further including a spring biasing means for biasing said link lever toward said normal operating position.
- 3. A throttle lever assembly as defined in claim 2, wherein said spring biasing means includes a spring having a pair of ends, said throttle lever means including a first spring end engaging portion for engaging one of said spring ends and said link lever includes a second spring end engaging portion for engaging the other of said spring ends, said first and second spring end engaging portion being separate from and independent of said throttle link stop means.
- 4. A throttle lever assembly as defined in claim 3, wherein said link lever is rotatable from said normal operating position to said first breakover position when rotated in one direction and is rotatable from said normal operating position to a second breakover position defined by said throttle link stop means when rotated in a second direction opposite said first direction, said throttle link stop means including a second stop portion on said link lever which is positioned to engage the throttle shaft when said link lever reaches said second breakover position.
- 5. A throttle lever assembly for operating a throttle shaft adapted to control the flow of fuel to an internal combustion engine as the throttle shaft is moved between an idle position and a full throttle position in response to a throttle control, comprising: p1 (a) a throttle lever means adapted to be connected with the throttle shaft for moving the throttle shaft between the idle and full throttle positions in response to movement of the throttle control;
- (b) throttle link means connected to said throttle lever means and to the throttle control for limiting the degree of force which may be applied to said throttle lever means when the throttle shaft reaches at least one of s id idle and full throttle positions, said throttle link means including a link lever pivotally connected to said throttle lever means to move from a normal operating position to a first breakover position,
- (c) throttle link stop means for limiting the rotation of said link lever relative to said throttle lever means to a predetermined amount sufficiently small to permit continued control over the position of the throttle shaft by the throttle control, said throttle link stop means defining said first breakover position of said link lever; and
- (d) a spring biasing means for biasing said link lever toward said normal operating position, said spring biasing means including a spring having a pair of ends, wherein said throttle lever means includes a first spring end engaging portion for engaging one of said spring ends and said link lever includes a second spring end engaging portion for engaging the other of said spring ends, and said first and second spring end engaging portions are separate from and independent of said throttle link stop means.
- 6. The throttle lever assembly described in claim 5, wherein said throttle link stop means is formed integrally with said link lever and includes a stop surface for engaging the throttle shaft.
- 7. The throttle lever assembly of claim 6, wherein said throttle link means operates to limit force which may be applied to said throttle lever by the throttle control when the throttle shaft reaches both said idle position and for said full throttle position, said link lever includes a second stop portion for engaging the throttle shaft.
- 8. The throttle lever assembly described in claim 7, wherein said first and second stop positions includes curved stop surfaces each having a radius of curvature conforming approximately to the radius of curvature of said throttle shaft.
- 9. The throttle lever assembly described in claim 7, further including breakover limit indicating means formed on said link lever whereby the breakover travel limits of said throttle link means can be set.
- 10. The throttle lever assembly described in claim 9, wherein said link lever means includes a link spacer means secured to said link lever for supporting said second spring engaging portion and for moving said link lever to set said breakover travel limits.
- 11. The throttle lever assembly described in claim 10, wherein said link spacer means include a link spacer pivotally connected to said throttle lever for rotation about the same axis as said link lever.
- 12. The throttle lever assembly describes in claim 11, wherein said throttle lever includes a U-shaped member forming a pair of spaced legs for sandwiching said link lever and said link spacer, said throttle shaft being received in a slot cut into the bend of said U-shaped member, said stop surfaces of said link lever being adjustable positioned relative to the throttle shaft to adjust the rotational displacement of said link lever required to cause the limit of said breakover travel to be reached.
Parent Case Info
This application is a continuation of Ser. No. 301,057, filed Jan. 25, 1989 now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2168427 |
Jun 1986 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
301057 |
Jan 1989 |
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