The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 1977
Filed:
Jan. 30, 1976
Ralph B Shamlian, San Francisco, CA (US);
Farallon Industries, Inc., Belmont, CA (US);
Abstract
In a swim fin, members are provided for maintaining a swimmer's foot in a predetermined angular relationship with respect to the swimmer's leg, particularly during a downward kick or leg extension mode. Movement of the ankle relative to the leg is substantially restricted, and stress that would be placed on the ankle in the utilization of a prior swim fin is transmitted to the leg. In two embodiments, a rigid member, such as a wall or brace, extends from the foot-receiving portion of the fin to engage the swimmer's lower shin. Straps from the shin brace maintain the swimmer's leg and foot in the predetermined relationship to the swim fin. Adjustable members may be provided for adjusting the selected, angular relationship between the shin brace and the swimmer's foot and leg. In a third embodiment, a tubular assembly is provided for engaging a lower rear portion of the swimmer's leg, preferably below the calf. In this embodiment, the engaging assembly is provided to pivot for facilitating walking and standing while wearing the fin. It is also adjustable for fitting feet of different sizes.