Claims
- 1. An exercise rowing machine comprising:
- a center longitudinal rail;
- a support frame extending beneath said rail;
- a seat carriage mounted on said rail;
- a readout housing mounted on said rail;
- a rowing arm pivotally mounted on the support frame at a pivot axis for stroking movement;
- a microprocessor in said readout housing having a circuit including wiring extending from said readout housing via said rail and support frame to said second housing;
- a chopper member extending from the rowing arm adjacent said pivot axis and presenting a series of light ports therethrough arranged to swing in an arcuate travel path having said pivot axis as its center of curvature responsive to stroking of the rowing arm;
- a second housing mounted on said support frame beneath said pivot axis and having an upper opening into which said chopper member and light ports project; and
- a light emitter and receiver mounted in said second housing and connected to said wiring, said emitter and receiver being arranged in alignment at opposite sides of the chopper member to register with said light ports as they move ins aid travel path, whereby said circuit is alternately completed and interrupted responsive to various lengths of strokes of the rowing arm to thereby measure the length of travel and time duration of the strokes of the rowing arm.
- 2. An exercise rowing machine according to claim 1 in which a second light emitter and receiver are mounted beside the first-mentioned light emitter and receiver in said second housing to also register with said light ports as they move in said travel path, said second emitter and receiver also being connected to said wiring in said circuit.
- 3. An exercise rowing machine according to claim 1 in which load resisting means are pivotally connected to said rowing arm for yielding resisting movement of the rowing arm, said load resisting means having adjustment settings to vary the resistance to movement of the rowing arm without changing the location of the pivotal connection of the load resisting means to the rowing arm, and said microprocessor having an input for said adjustment settings and being programmed to calculate the work performed by stroking said rowing arm.
- 4. An exercise rowing machine according to claim 1 in which said second housing engages the underside of said support frame directly beneath said pivot axis and is secured to said second housing.
- 5. An exercise rowing machine comprising:
- a support frame;
- a rowing arm pivotally mounted on the support frame at a generally horizontal pivot axis for stroking movement, said rowing arm having a handle remote from said pivot axis;
- means connected to the support frame and connected to the rowing arm between said handle and pivot axis for yieldingly resisting said stroking movement;
- a chopper mounted on said rowing arm adjacent said pivot axis and projecting endwise of said rowing arm away from said handle, said chopper presenting a series of signal passing zones separated by signal interrupting zones arranged in an arcuate path having sad pivot axis as the center of curvature;
- a housing mounted on said support frame directly beneath said pivot axis and providing an opening to receive said chopper;
- said support frame including a generally horizontal frame member on which said rowing arm is pivotally mounted and said chopper projects into the opening of said housing;
- an emitter and cooperating receiver in said housing and spaced apart by a gap aligned with said opening and arranged to have said chopper swing therethrough responsive to stroking of said rowing arm; and
- a readout circuit mounted on the support frame and including said emitter and receiver whereby said circuit measures the length of travel and time duration of the strokes of the rowing arm.
- 6. An exercise rowing machine according to claim 5 in which said readout circuit includes a microprocessor carried by the support frame and programmed to output the time duration of each stroke of said rowing arm.
- 7. An exercise rowing machine according to claim 5 in which said housing engages the underside of said frame directly beneath said pivot axis and has ground engagement.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 917,334, filed Oct. 9, 1986, now abandoned under C.F.R. .sctn. 1.62.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1083705 |
Sep 1967 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
917334 |
Oct 1986 |
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