Bump-feed filament vegetation trimmer

Details Bump-feed filament vegetation trimmer Bump-feed filament vegetation trimmer

1985-07-10

1987-04-14

Peters, Jimmy C.

Cutlery

Cutting tools

With blade moving means

56 127, A01D 5000

Patent

active

046567399

ABSTRACT:
A bump-actuable filament feed for vegetation trimmers; when the cutting length of filament breaks or wears short, the user without interrupting cutting simply bumps the cutting head on the ground deploying a fresh cutting-length of filament. Bumping causes a spring-restored spool latch to yield an increment of spool rotation, feeding a corresponding increment of filament from the spool. For replenishing the filament supply when exhausted, the spool snaps out in one embodiment on pressing a button, and a fresh spool as easily snaps into place.
For applications in which bumping the cutting head against the ground is not desired an analogous operation is provided by adaptation of the basic structure.

REFERENCES:
patent: 2709323 (1955-05-01), Swan
patent: 2713237 (1955-07-01), Monjar
patent: 2771721 (1956-11-01), Reiman
patent: 2854798 (1958-10-01), DeHaven
patent: 3664102 (1972-05-01), Reber
patent: 3859776 (1975-01-01), Ballas et al.
patent: 3928911 (1975-12-01), Pittinger
patent: 4077191 (1978-03-01), Pittinger et al.
patent: 4134204 (1979-01-01), Perdue
patent: 4211004 (1980-07-01), Woods
patent: 4233735 (1980-11-01), Tsuchiya
patent: 4524515 (1985-06-01), Oberg

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