Title: Plow shank and digging blade attached to lower extremity thereof by adaptor

Abstract: A plow shank has a digging blade attached to the lower extremity thereof by an adaptor. The digging blade has an inclined upper arcuate surface to which the adaptor is releasably secured. The adaptor is also releasably secured to the lower extremity of the shank, such that the blade is located below the lower extremity of the shank to enable the blade to present a low forward facing rounded profile.

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Other info:

Inventors: Ryan, John W. (Yowie Bay, AU)

Application Number: 06/220410
Filing Date: 1980-12-29
Publication_date: 1982-06-08
Assignee: AGROWPLOW PTY LTD

Primary Class(es): 172/721 172/762, 403/334, 172/753
Other Classes: A01B15/02; A01B61/04; A01B15/00; A01B61/00; A01B15/02
US Patent Ref:

0009433	November, 1852	Richardson	172/721
0140660	July, 1873	Vairin	172/749
2783701	March, 1957	Padrick	172/699	Earth working and planting implement
2885801	May, 1959	Hill	371/42R	Tooth structure for trenchers and the like
3292280	December, 1966	Launder et al.	172/750	Digging tooth for earth-moving equipment

Other Refs: AU216144

July, 1958

172/753

Primary Examiner: Stouffer, Richard T.
Assistant Examiner:
Attorney: Ladas & Parry

Parent Case Data:

This is a continuation, of application Ser. No. 932,022 filed Aug. 8, 1978, now abandoned.