Harvesters – Motorized harvester – With selective control of drive means
Patent
1997-02-26
1998-08-25
Shackelford, Heather
Harvesters
Motorized harvester
With selective control of drive means
56 116, 56 118, 56 169, 56DIG6, 192 11, A01D 6908
Patent
active
057972516
ABSTRACT:
A blade drive clutch and brake for a lawn mower including an engine having a drive shaft extending downwardly therefrom and which has a drive sheave thereon. A clutch arm is movably mounted below and rearwardly of the engine drive shaft sheave and supports a vertically disposed, rotatable jackshaft thereon. An upper sheave is mounted on the upper end of the jackshaft and is connected to the engine drive shaft sheave by an upper belt. A lower sheave is mounted on the lower end of the jackshaft and has a drive belt extending therearound which is connected to the sheaves on the cutting blades located in the mower deck. A lever is connected to the clutch arm for moving the clutch arm between engaged and disengaged positions. When the clutch arm is in its disengaged position, the blade drive belt pulls the clutch arm and jackshaft forwardly so that the upper belt is in a non-driving position. When the clutch arm is moved to its engaged position, the upper belt is placed in a driving condition so that the cutting blades will be rotated. A brake drum is mounted on the lower end of the jackshaft and is moved into frictional engagement with a stationary brake band when the clutch arm is moved to its disengaged position so that the rotation of the cutting blades will be slowed.
REFERENCES:
patent: 3583535 (1971-06-01), Plamper
patent: 3590564 (1971-07-01), Clifford
patent: 3628315 (1971-12-01), Bartholomew
patent: 3795094 (1974-03-01), Mollen et al.
patent: 4787195 (1988-11-01), Wenzel
patent: 4920734 (1990-05-01), Wenzel
patent: 4941864 (1990-07-01), Bottum
patent: 4958484 (1990-09-01), Busboom
patent: 4967543 (1990-11-01), Scag et al.
patent: 4977732 (1990-12-01), Minter
patent: 5077959 (1992-01-01), Wenzel
patent: 5127215 (1992-07-01), Wenzel
patent: 5129217 (1992-07-01), Loehr
patent: 5145019 (1992-09-01), Sebben et al.
patent: 5155985 (1992-10-01), Oshima et al.
patent: 5239810 (1993-08-01), Gugel
patent: 5249411 (1993-10-01), Hake
patent: 5251429 (1993-10-01), Minato et al.
patent: 5337543 (1994-08-01), Kitamura et al.
patent: 5355661 (1994-10-01), Tomiyama
patent: 5361566 (1994-11-01), Hohnl
patent: 5367861 (1994-11-01), Murakawa et al.
patent: 5518079 (1996-05-01), Zvolanek
ExMark Mrg. Co., Inc.
Shackelford Heather
Thomte Dennis L.
LandOfFree
Blade drive clutch and brake for a lawn mower does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blade drive clutch and brake for a lawn mower, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blade drive clutch and brake for a lawn mower will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-29534