U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Adjustable kayak paddle

Patent 4820216 Issued on April 11, 1989. Estimated Expiration Date: Icon_subject January 25, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3362033

Positive cam lock for extension pole
Patent #: 4076437
Issued on: 02/28/1978
Inventor: Mazzolla

Lockable telescopic joint Patent #: 4508466
Issued on: 04/02/1985
Inventor: Dennis

Inventor

Application

No. 07/148055 filed on 01/25/1988

US Classes:

440/101, OAR OR PADDLE416/70R, Operation solely by direct hand manipulationD12/215Oar, paddle or anchor (40)

Examiners

Primary: Basinger, Sherman D.
Assistant: Swinehart, Edwin L.

Attorney, Agent or Firm

International Classes

B63H 16/00 (20060101)
B63H 16/04 (20060101)

Abstract

An adjustable paddle (A) is disclosed which includes an adjustable joint (C) which allows for two handle sections (14, 16) to be fitted together in a desired axial and rotational positions to fix the length of paddle (A) and the relative blade angle settings of blades (18, 20). The adjustable joint includes three concentric shafts (22, 24, 28; and 62, 64, 66) to provide a more rigid joint which is generally wobble-free. Preferably, the concentric shafts are fixed together by a compression lock (30). The compression lock includes an annular compression member (32) and beveled edges (38, 58, 70) affixed on the first handle section and a complimentary beveled surface (34a) on compression nut (34). Tightening of the compression nut forces compression member (32) about the shaft of the second handle section to fit the handle sections together in the desired axial and rotational position. Additionally, a cam lock (26) may also be utilized to alternately lock the handle sections together.

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