CYNTHIA ANN PITTINGER
Pilots at Lk Dr, Weatherford, TX

4250623, Feb 17, 1981

Aug 1, 1979

6/062750

Charles B. Pittinger - Weatherford TX
Cynthia A. Pittinger - Weatherford TX

A01D 5000

30347

An automatic development reel type cutter head for a filament trimmer comprises a circular base member having a circular array of post-like upstanding members and a filament coil disposed about selected of the post-like upstanding members and inside of the remaining post like members. The filament coil has a free end portion which is automatically deployed outwardly from the coil as the cutter head is rotated by a drive shaft upon which the cutter head is mounted against one of the post-like members so as to project radially outwardly therefrom. As one free end portion wears and breaks off as a result of frictional contact with the post-like member from which it projects, another free end portion is automatically deployed outwardly from another post-like member. In one embodiment of the invention a filament retainer plate is disposed over only those post-like members about which the filament is to be wound. After the filament is wound about the post-like members covered by the retainer plate, a cover plate is positioned over all of the post-like members.

4020553, May 3, 1977

Sep 3, 1976

5/720237

Cynthia Ann Pittinger - Weatherford TX

A01D 5518

30347

An automatic-deployment reel-type cutter head for a filament trimmer provides for manufacturing purposes an easy-wind structure and for operating purposes, a winding pre-selectivity of filament-deployment length from the cutter head. The cutter head structure also during cutting operations protects filament wound on it but not yet deployed. In a preferred embodiment the reel comprises a first circular member with an array of postlike elements upstanding from the rim and a second circular member for capping the free ends of the array of upstanding elements to prevent transient-load disarray of the filament during operation.

4612738, Sep 23, 1986

Jul 2, 1985

6/751050

Charles B. Pittinger - Weatherford TX
Cynthia A. Pittinger - Weatherford TX

B24B 902

51335

A rotary cutting and finishing head of the flail type can use common commercially available sandpaper or emery cloth or other sheet material. A hub of the type rotatable by drill press or hand drill, mounts, in plane, uniform length and width strips or ribbons of any of these materials on slotted tube posts coaxially fixed to the hub. Each slot is of a size to capture a fixed end of a respective ribbon on assembly. In one version, every second post is provided with a ribbon. The ribbons are then wound in a substantially circumferential direction in and out among the posts, the odd posts being merely supports for the staggered partially overlying ribbons. On rotation of the hub at high speed, when the flail end of a ribbon wears from flexing at a post, it may part and release a fresh length or flail end at adjacent location. Alternately, fresh lengths of ribbon may be deployed manually by cutting off or tearing off worn flail portions. In another version, similar in part and that is preferred, a drop-in type ribbon supply is provided.

4702005, Oct 27, 1987

Oct 9, 1985

6/785779

Charles B. Pittinger - Weatherford TX
Cynthia A. Pittinger - Weatherford TX
Charles B. Pittinger - Reisterstown MD

B26B 700

30276

A vegetation cutting apparatus of the filament type comprising a cutter head including a spindle adapted to be rotatably driven, a keyway in the spindle extending axially of the spindle, and a key member carried by the spindle and slidably movable in the keyway. A clutch means is coaxially mounted on the spindle, and a filament storage spool is mounted on the spindle, the spool being carried by and lying radially outwardly of the clutch means, whereby the clutch means and the spool rotatably move as a unit. A spring means normally biases the key member into driving relation with the clutch means whereby normally the spindle rotatably drives the clutch means through the key member to rotatably drive the spool. A means such as a ground contact plunger operatively related to the key member, or, alternatively, an operating rod operatively related to the key member and actuated by a cable or the like, imparts axial movement to the key member along the keyway against the spring means to move the key member out of driving relation to the clutch means to permit relative rotation between the spool and the spindle and thus to permit an increment of the filament to be fed by centrifugal force from the spool.

4561180, Dec 31, 1985

Jun 29, 1984

6/626218

Charles B. Pittinger - Weatherford TX
Cynthia A. Pittinger - Weatherford TX
Charles B. Pittinger - Reisterstown MD

A01D 3526

30276

A vegetation cutting apparatus of the filament type comprising a cutter head including a spindle adapted to be rotatably driven, a keyway in the spindle extending axially of the spindle, and a key member carried by the spindle and slidably movable in the keyway. A clutch means is coaxially mounted on the spindle, and a filament storage spool is mounted on the spindle, the spool being carried by and lying radially outwardly of the clutch means, whereby the clutch means and the spool rotatably move as a unit. A spring means normally biases the key member into driving relation with the clutch means whereby normally the spindle rotatably drives the clutch means through the key member to rotatably drive the spool. A means such as a ground contact plunger operatively related to the key member, or, alternatively, an operating rod operatively related to the key member and actuated by a cable or the like, imparts axial movement to the key member along the keyway against the spring means to move the key member out of driving relation to the clutch means to permit relative rotation between the spool and the spindle and thus to permit an increment of the filament to be fed by centrifugal force from the spool.