Snowthrower

Details Snowthrower Snowthrower

1979-12-17

1981-10-20

Eickholt, E. H.

Excavating

Peat excavators

56294, E01H 500

Patent

active

042952859

ABSTRACT:
An improved snowthrower (2) comprises a housing (4) having a rotatable impeller (6) therein. Impeller (6) is rotationally molded from plastic and is easily replaceable in housing (4). Moreover, impeller (6) includes a plurality of snow impelling blades (60) which are sufficiently rigid to transmit a drive torque from one side wall (63) to the other side wall (62) of impeller (6). Thus, impeller (6) does not require the use of a through shaft. In addition, snowthrower (2) includes a switch (93) for actuating the drive motor (8). Switch bar (96) is movable to cause switch (93) to close. However, lockout member (110) can be positioned in engagement with switch bar (96) to prevent inadvertent or accidental actuation of switch (93). Lockout member (100) is moved to a non-locking position only when a key member (116) is inserted into a control grip (112).

REFERENCES:
patent: Re25810 (1965-06-01), Postlewait et al.
patent: 2049883 (1936-08-01), Worthington
patent: 2063067 (1936-12-01), Waller
patent: 2687683 (1954-08-01), Chattin
patent: 2714772 (1955-08-01), Erickson
patent: 3452460 (1969-07-01), Cope et al.
patent: 3596577 (1971-08-01), Chennells
patent: 3729143 (1973-04-01), Wagstaff et al.
patent: 4062135 (1977-12-01), Dobberpuhl
patent: 4190972 (1980-03-01), Berner

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