IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0489797
(1995-06-13)
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발명자
/ 주소 |
- Bruggemann Thomas J. (15205 S. Grevillea Ave. Lawndale CA 90260)
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인용정보 |
피인용 횟수 :
13 인용 특허 :
0 |
초록
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A device for athletic exercise by pulling at a resisting force. The device consists of a small cylindrical enclosure containing a number of constant force, circular wound spring assemblies, having a pulley molded to the enclosure, and having a force selector assembly connected to the enclosure which
A device for athletic exercise by pulling at a resisting force. The device consists of a small cylindrical enclosure containing a number of constant force, circular wound spring assemblies, having a pulley molded to the enclosure, and having a force selector assembly connected to the enclosure which also serves to hold the device in any fixed location. A cord is wound around the pulley during assembly and its free end is attached to a pull-handle. A person uses the force selector by manually moving a spring-loaded adjustment knob through slots in the selector assembly to a slot which corresponds to the desired force level. This action causes a spring-engagement rod inside the selector assembly to engage the number of spring assemblies that will produce the selected resisting force when a person pulls at the pull handle. The device is small and light in weight. Provision is made for attachment of the device to any suitable restraining object or static equipment.
대표청구항
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An athletic exerciser pulling device, comprising in combination: a force selector assembly comprising an elongated metal tubular member which serves as a selector housing, an elongated metal rod member which fits inside said tubular member, a spring-loaded adjustment knob for spring force selection,
An athletic exerciser pulling device, comprising in combination: a force selector assembly comprising an elongated metal tubular member which serves as a selector housing, an elongated metal rod member which fits inside said tubular member, a spring-loaded adjustment knob for spring force selection, a plug member which fits inside said tubular member and a locknut; said tubular member having at one end, a stepped portion and at its distal end, a threaded portion to accept a fastening nut, said stepped portion including at its end a means for fastening said locknut to said tubular member, said tubular member including means for selecting the device spring force using said adjustment knob; said rod member, having a splined portion of its length from its proximal end covered with longitudinal splines placed close together for the purpose of engagement with spring assemblies, and including a flat portion cut for a short length near its distal end; said plug member including a central bore to support said flat portion of said rod member when inside said tubular member; a pulley shield made of molded hard plastic, said shield being shaped as a shallow cylinder, having one end fully open and its opposite end having a circular hole at its center axis, said opposite end including a hub formed around said circular hole, said hub being sized to fit over the step of said stepped portion of said tubular member in said force selector assembly, said pulley shield including a second hole in its outer cylindrical surface, permitting a cord to be passed through said second hole; a pulley/spring assembly comprising a molded plastic pulley/spring housing, circular bushing bearings, a multiplicity of identical circular, constant force spring assemblies, means for keying and retaining said constant force spring assemblies in said pulley/spring housing so that said constant force spring assemblies are tightly gripped by said pulley/spring housing, a length of strong cord and a housing end cover; said pulley/spring housing being a hollow cylinder, open at one end and having a pulley molded on at its distal end, said pulley including a first hole bored through its center axis of rotation corresponding with the center longitudinal axis of said pulley/spring housing, said first hole sized to snugly accommodate said circular bushing bearings, said pulley outer diameter being sized to fit inside said pulley shield with clearance; said constant force spring assemblies each including an engaging hub component having a bore at its center axis with multiple longitudinal grooves in said bore surface, said grooves matching in size and number said longitudinal splines on the splined portion of said rod member to facilitate engagement of said rod member with said constant force spring assemblies; said cord having one end fastened to the hub of said pulley and being wound around said pulley sufficiently until a small portion of said cord is available for pulling; said housing end cover being a circular disk of plastic which is fastened to the open end of said pulley/spring housing after said constant force spring assemblies are inserted; and a pull-handle, said pull-handle being fastened to said cord after said cord is pulled through said second hole in said pulley shield; in assembly of said device, said force selector assembly and said pulley shield having the stepped portion of said selector housing pushed through the center of said bushing bearings in said pulley and fastened by said locknut to the inside wall of said pulley/spring housing, said constant force spring assemblies then being placed inside said pulley/spring housing and said housing end cover fastened to the open end of said pulley/spring housing; said rod member inside said selector housing being engaged by said spring-loaded adjustment knob and capable of being moved into said pulley/spring assembly by manual movement of said spring-loaded adjustment knob, until the splined portion of said rod member engages a desired number of spring assemblies as selected using said means for selecting the device spring force; said device when an exerciser pulls at the pull-handle, producing a constant opposing force at the selected force level.
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