Hydraulic resistance type stationary rowing unit

• US 5,104,363 A
• Filed: 09/17/1991
• Issued: 04/14/1992
• Est. Priority Date: 09/17/1991
• Status: Expired due to Fees

• Current Assignee: James Shi
• Original Assignee: James Shi
• Inventors: Shi, James
• Primary Examiner(s): Crow, Stephen R.
• Assistant Examiner(s): DONNELLY, JEROME W
• Application Number:
  US07/761,100
• Time in Patent Office: 210 Days
• Field of Search: 272/132, 272/70, 272/96, 272/73, 272/72, 272/134, 272/130, 272/120, 272/144, 272/70.2, 272/116, 272/135, 128/25 R
• US Class Current: 482/73
• CPC Class Codes: A63B 2022/0084 pivoting about a horizontal axis
• CPC Class Codes: A63B 2023/006 for stretching exercises
• CPC Class Codes: A63B 21/0083 of the piston-cylinder type using pneumatic piston-cylinder type force resistors A63B21/0087
• CPC Class Codes: A63B 22/001 by simultaneously exercising arms and legs, e.g. diagonally in anti-phase A63B22/0076 takes precedence
• CPC Class Codes: A63B 22/0056 the pivoting movement being in a vertical plane, e.g. steppers with a horizontal axis platforms for rocking motion about a horizontal axis A63B22/16
• CPC Class Codes: A63B 22/0076 Rowing machines for conditioning the cardio-vascular system seats moving during exercise A63B22/0087; training appliances for rowing or sculling on boats A63B69/06

Abstract

An exercising device in the form of a stationary rowing unit which can be used as a physical therapy aide having its main body portion lying substantially in a horizontal plane. The unit including a seat and arm assemblies foot pedal which are pivotally connected by a reciprocating cable and a pivotal tube assembly. The foot pedals being pivotally connected to the arm assemblies by rigid connecting rods and a pair of resistance cylinder means each pivotally mounted between respective foot pedals and the frame on opposite sides of the body for providing a desired resistance to movement by the user.

Claims

1. A hydraulic resistance stationary rowing unit, comprising:

a frame assembly having a substantially horizontally extending body, a front leg unit provided on a front end of said body, a rear leg unit provided on a rear end of said body, a seat mounted on said body adjacent to said rear end of said body, a wedge shaped mounting support, having a flat top side positioned at the top of said body towards said front end of said body, and a rope sheave rotatably mounted on an inclined bottom side of said mounting support;

a pair of elongated foot pedals pivotally mounted on opposite sides of said body adjacent to a front end of said body, each of said foot pedals having an inner side disposed adjacent to said body and being provided with a hook at an intermediate portion of said inner side;

a pair of arm assemblies disposed on opposite sides of said body and located between said seat and foot pedals each of said arm assemblies including an L-shaped shaft having a pivot leg portion and a lever portion extending upwardly from one end of said pivot leg portion, the other end of said pivot leg portion being pivotally mounted onto said body;

a pair of connecting rods disposed on opposite sides of said body, one end of each of said connecting rods being pivotally mounted to a frontal side of one of said foot pedals, the other end of each of said connecting rods being pivotally mounted to said pivot leg portion of one of said arm assemblies, said connecting rods coordinating the movement of said foot pedals and said arm assemblies;

a pair of hydraulic cylinder means disposed on opposite sides of said body, each of said hydraulic cylinder means including a cylinder body having a base end pivotally mounted to said body between said seat and said foot pedals, and a piston rod having a distal end coupled to said frontal side of one of said foot pedals, said hydraulic cylinder means providing resistance to movement of said foot pedals relative to said body; and

a cable provided on said rope sheave and having two ends each being tied to a respective ring hook, each of said two ends of said cable being selectively fastened to said hook of a corresponding one of said foot pedals.

2. The hydraulic resistance stationary rowing unit as claimed in claim 1, wherein said rope sheave has an annular peripheral groove, said cable being provided on said peripheral groove to properly position said cable.

3. The hydraulic resistance stationary rowing unit as claimed in claim 1, wherein said frontal side of each of said foot pedals has an upper portion provided with a foot pad and a U-shaped foot support disposed around lower edges of said foot pad.