US20080188362A1 - Weightlifting device - Google Patents
Weightlifting device Download PDFInfo
- Publication number
- US20080188362A1 US20080188362A1 US12/100,255 US10025508A US2008188362A1 US 20080188362 A1 US20080188362 A1 US 20080188362A1 US 10025508 A US10025508 A US 10025508A US 2008188362 A1 US2008188362 A1 US 2008188362A1
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- United States
- Prior art keywords
- adjustable
- weight plates
- engaging
- movable
- handle
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/075—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle with variable weights, e.g. weight systems with weight selecting means for bar-bells or dumb-bells
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/062—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces
- A63B21/0626—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means
- A63B21/0628—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means for vertical array of weights
- A63B21/063—Weight selecting means
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00058—Mechanical means for varying the resistance
- A63B21/00065—Mechanical means for varying the resistance by increasing or reducing the number of resistance units
Definitions
- This invention relates to a weightlifting device, more particularly to a weightlifting device that permits easy adjustment of the number of weight plates attached to a handle member.
- a conventional dumbbell includes a handle member, a set of weight plates that are attached removably to the handle member, and a pair of spin locks, each of which is threadedly engaged to a respective one of opposite end portions of the handle member for retaining the weight plates on the handle member.
- the aforementioned conventional dumbbell is disadvantageous in that attachment and detachment of the weight plates to and from the handle member are inconvenient.
- the object of the present invention is to provide a weightlifting device that can overcome the aforesaid drawback of the prior art.
- a weightlifting device comprises an exercising weight that includes a handle member, an elongated adjustable member, a set of weight plates, and an elongated limiting member.
- the handle member has a tubular end portion.
- the adjustable member extends into the end portion of the handle member and is movable axially relative to the handle member.
- Each of the weight plates is sleeved around the adjustable member.
- the limiting member extends through the weight plates to thereby prevent rotation of the weight plates relative to each other.
- FIG. 1 is a perspective view of the preferred embodiment of a weightlifting device according to this invention.
- FIG. 2 is a sectional view of the preferred embodiment
- FIG. 3 is a perspective view to illustrate a weight plate of the preferred embodiment
- FIG. 4 is an exploded perspective view to illustrate an adjustable member, a limiting member, and a retaining unit of the preferred embodiment
- FIG. 5 is a schematic view to illustrate a state where the adjustable member of the preferred embodiment is disposed at a first angular position
- FIG. 6 is a schematic view to illustrate a state where the adjustable member of the preferred embodiment is disposed at a second angular position
- FIG. 7 is a perspective view to illustrate a handle member of the preferred embodiment
- FIG. 8 is a partly sectional view of the preferred embodiment illustrating a state where the retaining unit engages the weight plate.
- FIG. 9 is a partly sectional view of the preferred embodiment illustrating a state where the retaining unit is disengaged from the weight plate.
- FIGS. 1 and 2 the preferred embodiment of a weightlifting device according to this invention is shown to include an exercising weight 1 .
- the exercising weight 1 includes a handle member 2 , elongated left and right adjustable members 61 , 51 , first and second sets of weight plates 41 , 31 , and elongated left and right limiting members 65 , 55 .
- the handle member 2 has opposite tubular left and right end portions 22 , 21 .
- Each of the left and right adjustable members 61 , 51 extends into a respective one of the left and right end portions 22 , 21 of the handle member 2 and is movable axially relative to the handle member 2 .
- the weight plates 41 , 31 in each of the first and second sets are sleeved around a respective one of the left and right adjustable members 61 , 51 .
- the left limiting member 65 serves to prevent rotation of the weight plates 41 relative to each other.
- the right limiting member 55 serves to prevent rotation of the weight plates 31 relative to each other.
- the exercising weight 1 further includes left and right restricting units 63 , 53 and left and right retaining units 62 , 52 .
- Each of the left and right restricting units 63 , 53 serves to arrest axial movement of a respective one of the left and right adjustable members 61 , 51 relative to the handle member 2 .
- Each of the left and right retaining units 62 , 52 serves to retain the weight plates 41 , 31 in a respective one of the first and second sets on a respective one of the left and right adjustable members 61 , 51 .
- the left adjustable member 61 Since the constructions of the left end portion 22 of the handle member 2 , the left adjustable member 61 , the weight plates 41 , the left limiting member 65 , the left restricting unit 63 , and the left retaining unit 62 are similar to those of the right end portion 21 of the handle member 2 , the right adjustable member 51 , the weight plates 31 , the right limiting member 55 , the right restricting unit 53 , and the right retaining unit 52 , respectively, only the right end portion 21 of the handle member 2 , the right adjustable member 51 , the weight plates 31 , the right limiting member 55 , the right restricting unit 53 , and the right retaining unit 52 will be described hereinafter.
- each of the weight plates 31 is formed with a first through-hole 311 that has a non-circular shape, a second through-hole 312 that is in spatial communication with the first through-hole 311 , and third and fourth through-holes 313 , each of which that is in spatial communication with the second through-hole 312 and is defined by a hole-defining wall 314 .
- the adjustable member 51 has a circular cross-section.
- the restricting unit 53 includes a first restricting is member 531 provided on the adjustable member 51 , and a second restricting member 532 provided on the right end portion 21 of the handle member 2 .
- the adjustable member 51 is rotatable relative to the handle member 2 between a first angular position, where the first and second restricting members 531 , 532 engage each other, thereby arresting axial movement of the adjustable member 51 relative to the handle member 2 , and a second angular position, where the first and second restricting members 531 , 532 are disengaged from each other, thereby permitting axial movement of the adjustable member 51 relative to the handle member 2 .
- the limiting member 55 is sleeved on the adjustable member 51 , extends through the first through-holes 311 in the weight plates 31 , and has inner and outer surfaces 551 , 552 .
- the inner surface 551 of the limiting member 55 has a circular cross-section that corresponds to the cross-section of the adjustable member 51 , thereby permitting rotation of the adjustable member 51 between the first and second angular positions.
- the outer surface 552 of the limiting member 55 has a non-circular cross-section that corresponds to the shape of the first through-holes 311 in the weight plates 31 , thereby preventing rotation of the weight plates 31 relative to each other.
- the cross-section of the outer surface 552 of the limiting member 55 has at least one flat portion.
- the cross-section of the outer surface 552 of the limiting member 55 has a pair of opposite flat portions 555 , 556 .
- the limiting member 55 further extends into the end portion 21 of the handle member 2 .
- the end portion 21 of the handle member 2 has a non-circular cross-section that corresponds to the cross-section of the outer surface 552 of the limiting member 55 , thereby preventing rotation of the limiting member 55 relative to the handle member 2 .
- the first restricting member 531 of the restricting unit 53 includes a plurality of spaced apart engaging grooves 533 that are formed in and that are disposed along the length of the adjustable member 51 .
- the adjustable member 51 is further formed with a guiding groove 534 that extends along the length thereof and that is in spatial communication with the engaging grooves 533 .
- the limiting member 55 is formed with an elongated slot 554 that extends from the inner surface 551 to the outer surface 552 thereof.
- the elongated slot 554 in the limiting member 55 is registered with the engaging grooves 533 when the adjustable member 51 is disposed at the first angular position.
- the elongated slot 554 in the limiting member 55 is registered with the guiding groove 534 when the adjustable member 51 is disposed at the second angular position.
- the second restricting member 532 includes an engaging protrusion 535 that extends from the end portion 21 of the handle member 2 through the elongated slot 554 in the limiting member 55 .
- the engaging protrusion 535 is disposed in a selected one of the engaging grooves 533 in the adjustable member 51 when the adjustable member 51 is disposed at the first angular position, as best shown in FIG. 5 .
- the engaging protrusion 535 is disposed in the guiding groove 534 in the adjustable member 51 when the adjustable member 51 is disposed at the second angular position.
- the limiting member 55 is further formed with an elongated hole 553 that extends from the inner surface 551 to the outer surface 552 thereof.
- the retaining unit 52 includes a secured member 521 and a movable member 522 .
- the secured member 521 extends through the elongated hole 553 in the limiting member 55 , and is secured to the adjustable member 51 so as to be co-movable therewith between the first and second angular positions.
- the movable member 522 is coupled movably to the secured member 521 , and is movable relative to the secured member 521 between an engaging position, where the movable member 522 engages an outermost one, i.e., a rightmost one, of the weight plates 31 , and a disengaging position, where the movable member 522 is disengaged from the outermost one of the weight plates 31 .
- the movable member 522 includes an engaging piece 524 and an operable piece 523 .
- the engaging piece 524 of the movable member 522 includes an engaging body 542 that is sleeved slidably on the secured member 521 , and an engaging arm 543 that extends from the engaging body 542 and that has a hook shape.
- the engaging arm 543 of the engaging piece 524 engages the hole-defining wall 314 of the outermost one of the weight plates 31 when the movable member 522 is disposed at the engaging position, as best shown in FIG. 8 .
- the engaging arm 543 of the engaging piece 524 is disengaged from the hole-defining wall 314 of the outermost one of the weight plates 31 when the movable member 522 is disposed at the disengaging position.
- the retaining unit 52 further includes a biasing member 541 , such as spiral spring, that biases the movable member 522 to the engaging position.
- the secured member 521 has a free end 527 provided with an abutting piece 526 .
- the biasing member 541 is sleeved on the secured member 522 , and has opposite ends that respectively abut against the abutting piece 526 of the secured member 521 and the engaging piece 524 of the movable member 522 .
- the operable piece 523 of the movable member 522 is sleeved on the biasing member 541 and is connected to the engaging piece 524 so as to be co-movable therewith.
- the second through-hole 312 in each of the weight plates 31 permits extension of the movable member 522 therethrough when the adjustable member 51 is moved axially relative to the handle member 2 .
- Each of the third and fourth through-holes 313 in each of the weight plates 31 has a shape which corresponds to that of the engaging arm 543 of the engaging piece 524 of the movable member 522 .
- the weight plate 31 may be sleeved on the limiting member 55 in either direction, i.e., either side of the weight plate 31 first.
- the weight lifting device further includes a rack unit 7 that supports thereon the exercising weight 1 .
- the rack unit 7 has opposite left and right end portions 72 , 71 , each of which supports thereon the weight plates 41 , 31 in a respective one of the first and second sets, and a middle portion 73 that interconnects the left and right end portions 72 , 71 thereof and that supports thereon the left and right end portions 22 , 21 of the handle member 2 .
- each of the left and right end portions 72 , 71 of the rack unit 7 is formed with a plurality of spaced apart slots 721 , 711 .
- Each of the weight plates 41 in the first set extends into a respective one of the slots 721 in the left end portion 72 of the rack unit 7 when the left end portion 72 of the rack unit 7 supports thereon the weight plates 41 .
- each of the weight plates 31 in the second set extends into a respective one of the slots 711 in the right end portion 71 of the rack unit 7 when the right end portion 71 of the rack unit 7 supports thereon the weight plates 31 .
- the construction as such permits the rack unit 7 to stably support the exercising weight 1 thereon.
- the rack unit 7 supports thereon the exercising weight 1 .
- the movable member 522 of the right retaining unit 52 is first disposed at the disengaging position. Subsequently, the right adjustable member 51 is disposed at the second angular position. At this time, the right adjustable member 51 may be moved axially relative to the handle member 2 to increase or decrease the number of the weight plates 41 sleeved around the right adjustable member 51 . Thereafter, the right adjustable member 51 is disposed back at the first angular position. Subsequently, the movable member 522 of the right retaining unit 52 is disposed back at the engaging position.
- the left end portion 72 of the rack unit 7 is marked with a plurality of gradations 9 , each of which is aligned with a respective one of the slots 721 in the left end portion 72 of the rack unit 7 and indicates the total weight of the weight plates 41 sleeved around the left adjustable member 61 .
- the right end portion 71 of the rack unit 7 is marked with a plurality of gradations 8 , each of which is aligned with a respective one of the slots 711 in the right end portion 71 of the rack unit 7 and indicates the total weight of the weight plates 31 sleeved around the right adjustable member 51 .
Abstract
A weightlifting device includes a handle member, an elongated adjustable member, a set of weight plates, and an elongated limiting member. The handle member has a tubular end portion. The adjustable member extends into the end portion of the handle member and is movable axially relative to the handle member. Each of the weight plates is sleeved around the adjustable member. The limiting member extends through the weight plates to thereby prevent rotation of the weight plates relative to each other.
Description
- This application is a continuation-in-part of co-pending U.S. patent application Ser. No. 11/642367, filed on Dec. 29, 2006.
- 1. Field of the Invention
- This invention relates to a weightlifting device, more particularly to a weightlifting device that permits easy adjustment of the number of weight plates attached to a handle member.
- 2. Description of the Related Art
- A conventional dumbbell includes a handle member, a set of weight plates that are attached removably to the handle member, and a pair of spin locks, each of which is threadedly engaged to a respective one of opposite end portions of the handle member for retaining the weight plates on the handle member.
- The aforementioned conventional dumbbell is disadvantageous in that attachment and detachment of the weight plates to and from the handle member are inconvenient.
- Therefore, the object of the present invention is to provide a weightlifting device that can overcome the aforesaid drawback of the prior art.
- According to the present invention, a weightlifting device comprises an exercising weight that includes a handle member, an elongated adjustable member, a set of weight plates, and an elongated limiting member. The handle member has a tubular end portion. The adjustable member extends into the end portion of the handle member and is movable axially relative to the handle member. Each of the weight plates is sleeved around the adjustable member. The limiting member extends through the weight plates to thereby prevent rotation of the weight plates relative to each other.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which:
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FIG. 1 is a perspective view of the preferred embodiment of a weightlifting device according to this invention; -
FIG. 2 is a sectional view of the preferred embodiment; -
FIG. 3 is a perspective view to illustrate a weight plate of the preferred embodiment; -
FIG. 4 is an exploded perspective view to illustrate an adjustable member, a limiting member, and a retaining unit of the preferred embodiment; -
FIG. 5 is a schematic view to illustrate a state where the adjustable member of the preferred embodiment is disposed at a first angular position; -
FIG. 6 is a schematic view to illustrate a state where the adjustable member of the preferred embodiment is disposed at a second angular position; -
FIG. 7 is a perspective view to illustrate a handle member of the preferred embodiment; -
FIG. 8 is a partly sectional view of the preferred embodiment illustrating a state where the retaining unit engages the weight plate; and -
FIG. 9 is a partly sectional view of the preferred embodiment illustrating a state where the retaining unit is disengaged from the weight plate. - Referring to
FIGS. 1 and 2 , the preferred embodiment of a weightlifting device according to this invention is shown to include an exercising weight 1. - The exercising weight 1 includes a
handle member 2, elongated left and rightadjustable members weight plates members - The
handle member 2 has opposite tubular left andright end portions - Each of the left and right
adjustable members right end portions handle member 2 and is movable axially relative to thehandle member 2. - The
weight plates adjustable members - The left limiting
member 65 serves to prevent rotation of theweight plates 41 relative to each other. Similarly, the right limitingmember 55 serves to prevent rotation of theweight plates 31 relative to each other. - The exercising weight 1 further includes left and
right restricting units right retaining units - Each of the left and right restricting
units adjustable members handle member 2. - Each of the left and
right retaining units weight plates adjustable members - Since the constructions of the
left end portion 22 of thehandle member 2, the leftadjustable member 61, theweight plates 41, the left limitingmember 65, the left restrictingunit 63, and theleft retaining unit 62 are similar to those of theright end portion 21 of thehandle member 2, the rightadjustable member 51, theweight plates 31, the right limitingmember 55, theright restricting unit 53, and theright retaining unit 52, respectively, only theright end portion 21 of thehandle member 2, the rightadjustable member 51, theweight plates 31, the right limitingmember 55, the right restrictingunit 53, and theright retaining unit 52 will be described hereinafter. - As best shown in
FIG. 3 , each of theweight plates 31 is formed with a first through-hole 311 that has a non-circular shape, a second through-hole 312 that is in spatial communication with the first through-hole 311, and third and fourth through-holes 313, each of which that is in spatial communication with the second through-hole 312 and is defined by a hole-definingwall 314. - With further reference to
FIG. 4 , theadjustable member 51 has a circular cross-section. - The restricting
unit 53 includes a first restricting ismember 531 provided on theadjustable member 51, and a second restrictingmember 532 provided on theright end portion 21 of thehandle member 2. - The
adjustable member 51 is rotatable relative to thehandle member 2 between a first angular position, where the first and second restrictingmembers adjustable member 51 relative to thehandle member 2, and a second angular position, where the first and second restrictingmembers adjustable member 51 relative to thehandle member 2. - The limiting
member 55 is sleeved on theadjustable member 51, extends through the first through-holes 311 in theweight plates 31, and has inner andouter surfaces inner surface 551 of thelimiting member 55 has a circular cross-section that corresponds to the cross-section of theadjustable member 51, thereby permitting rotation of theadjustable member 51 between the first and second angular positions. On the other hand, theouter surface 552 of thelimiting member 55 has a non-circular cross-section that corresponds to the shape of the first through-holes 311 in theweight plates 31, thereby preventing rotation of theweight plates 31 relative to each other. In this embodiment, the cross-section of theouter surface 552 of thelimiting member 55 has at least one flat portion. Preferably, the cross-section of theouter surface 552 of thelimiting member 55 has a pair of oppositeflat portions - The limiting
member 55 further extends into theend portion 21 of thehandle member 2. Theend portion 21 of thehandle member 2 has a non-circular cross-section that corresponds to the cross-section of theouter surface 552 of the limitingmember 55, thereby preventing rotation of the limitingmember 55 relative to thehandle member 2. - The first restricting
member 531 of the restrictingunit 53 includes a plurality of spaced apart engaginggrooves 533 that are formed in and that are disposed along the length of theadjustable member 51. - The
adjustable member 51 is further formed with a guidinggroove 534 that extends along the length thereof and that is in spatial communication with theengaging grooves 533. - The
limiting member 55 is formed with anelongated slot 554 that extends from theinner surface 551 to theouter surface 552 thereof. Theelongated slot 554 in thelimiting member 55 is registered with theengaging grooves 533 when theadjustable member 51 is disposed at the first angular position. On the other hand, theelongated slot 554 in thelimiting member 55 is registered with the guidinggroove 534 when theadjustable member 51 is disposed at the second angular position. - The second restricting
member 532 includes anengaging protrusion 535 that extends from theend portion 21 of thehandle member 2 through theelongated slot 554 in thelimiting member 55. Theengaging protrusion 535 is disposed in a selected one of theengaging grooves 533 in theadjustable member 51 when theadjustable member 51 is disposed at the first angular position, as best shown inFIG. 5 . On the other hand, as best shown inFIG. 6 , theengaging protrusion 535 is disposed in the guidinggroove 534 in theadjustable member 51 when theadjustable member 51 is disposed at the second angular position. - The limiting
member 55 is further formed with anelongated hole 553 that extends from theinner surface 551 to theouter surface 552 thereof. - With particular reference to
FIGS. 4 and 7 , theretaining unit 52 includes a securedmember 521 and amovable member 522. The securedmember 521 extends through theelongated hole 553 in thelimiting member 55, and is secured to theadjustable member 51 so as to be co-movable therewith between the first and second angular positions. Themovable member 522 is coupled movably to the securedmember 521, and is movable relative to the securedmember 521 between an engaging position, where themovable member 522 engages an outermost one, i.e., a rightmost one, of theweight plates 31, and a disengaging position, where themovable member 522 is disengaged from the outermost one of theweight plates 31. - In this embodiment, the
movable member 522 includes anengaging piece 524 and anoperable piece 523. The engagingpiece 524 of themovable member 522 includes anengaging body 542 that is sleeved slidably on thesecured member 521, and anengaging arm 543 that extends from the engagingbody 542 and that has a hook shape. Theengaging arm 543 of theengaging piece 524 engages the hole-definingwall 314 of the outermost one of theweight plates 31 when themovable member 522 is disposed at the engaging position, as best shown inFIG. 8 . On the other hand, as best shown inFIG. 9 , theengaging arm 543 of theengaging piece 524 is disengaged from the hole-definingwall 314 of the outermost one of theweight plates 31 when themovable member 522 is disposed at the disengaging position. - The retaining
unit 52 further includes a biasingmember 541, such as spiral spring, that biases themovable member 522 to the engaging position. In particular, thesecured member 521 has afree end 527 provided with anabutting piece 526. The biasingmember 541 is sleeved on thesecured member 522, and has opposite ends that respectively abut against the abuttingpiece 526 of thesecured member 521 and theengaging piece 524 of themovable member 522. - The
operable piece 523 of themovable member 522 is sleeved on the biasingmember 541 and is connected to theengaging piece 524 so as to be co-movable therewith. - The second through-
hole 312 in each of theweight plates 31 permits extension of themovable member 522 therethrough when theadjustable member 51 is moved axially relative to thehandle member 2. - Each of the third and fourth through-
holes 313 in each of theweight plates 31 has a shape which corresponds to that of theengaging arm 543 of theengaging piece 524 of themovable member 522. As such, theweight plate 31 may be sleeved on the limitingmember 55 in either direction, i.e., either side of theweight plate 31 first. - The weight lifting device further includes a
rack unit 7 that supports thereon the exercising weight 1. In particular, therack unit 7 has opposite left andright end portions weight plates middle portion 73 that interconnects the left andright end portions right end portions handle member 2. In this embodiment, each of the left andright end portions rack unit 7 is formed with a plurality of spaced apartslots weight plates 41 in the first set extends into a respective one of theslots 721 in theleft end portion 72 of therack unit 7 when theleft end portion 72 of therack unit 7 supports thereon theweight plates 41. Similarly, each of theweight plates 31 in the second set extends into a respective one of theslots 711 in theright end portion 71 of therack unit 7 when theright end portion 71 of therack unit 7 supports thereon theweight plates 31. The construction as such permits therack unit 7 to stably support the exercising weight 1 thereon. - In use, at an initial state, the
rack unit 7 supports thereon the exercising weight 1. At this state, when it is desired to adjust the number of theweight plates 31 sleeved around the rightadjustable member 51, themovable member 522 of theright retaining unit 52 is first disposed at the disengaging position. Subsequently, the rightadjustable member 51 is disposed at the second angular position. At this time, the rightadjustable member 51 may be moved axially relative to thehandle member 2 to increase or decrease the number of theweight plates 41 sleeved around the rightadjustable member 51. Thereafter, the rightadjustable member 51 is disposed back at the first angular position. Subsequently, themovable member 522 of theright retaining unit 52 is disposed back at the engaging position. - Since the procedure for adjusting the number of the
weight plates 41 sleeved around the leftadjustable member 61 is similar to the above-described procedure, a detailed description of the same will be dispensed with herein for the sake of brevity. - The
left end portion 72 of therack unit 7 is marked with a plurality ofgradations 9, each of which is aligned with a respective one of theslots 721 in theleft end portion 72 of therack unit 7 and indicates the total weight of theweight plates 41 sleeved around the leftadjustable member 61. Similarly, theright end portion 71 of therack unit 7 is marked with a plurality ofgradations 8, each of which is aligned with a respective one of theslots 711 in theright end portion 71 of therack unit 7 and indicates the total weight of theweight plates 31 sleeved around the rightadjustable member 51. - While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (9)
1. A weightlifting device, comprising:
an exercising weight including
a handle member having a tubular end portion,
an elongated adjustable member extending into said end portion of said handle member, and movable axially relative to said handle member,
a set of weight plates sleeved around said adjustable member, and
an elongated limiting member extending through said weight plates to thereby prevent rotation of said weight plates relative to each other.
2. The weightlifting device as claimed in claim 1 , further comprising a restricting unit including a first restricting member provided on said adjustable member, and a second restricting member provided on said end portion of said handle member,
said adjustable member being rotatable relative to said handle member between a first angular position, where said first and second restricting members engage each other, thereby arresting axial movement of said adjustable member relative to said handle member, and a second angular position, where said first and second restricting members are disengaged from each other, thereby permitting axial movement of said adjustable member relative to said handle member.
3. The weight lifting device as claimed in claim 2 , wherein each of said weight plates is formed with a first through-hole that has a non-circular shape, and said adjustable member has a circular cross-section,
said limiting member being sleeved on said adjustable member, extending through said first through-holes in said weight plates, and having an inner surface that has a circular cross-section corresponding to the cross-section of said adjustable member, thereby permitting rotation of said adjustable member between the first and second angular positions, and an outer surface that has a non-circular cross-section corresponding to the shape of said first through-holes in said weight plates, thereby preventing rotation of said weight plates relative to each other.
4. The weightlifting device as claimed in claim 3 , wherein said limiting member further extends into said end portion of the said handle member, said end portion of said handle member having a non-circular cross-section that corresponds to the cross-section of said outer surface of said limiting member, thereby preventing rotation of said limiting member relative to said handle member.
5. The weightlifting device as claimed in claim 3 , wherein said first restricting member includes a plurality of spaced apart engaging grooves that are formed in and that are disposed along the length of said adjustable member,
said adjustable member being further formed with a guiding groove that extends along the length thereof and that is in spatial communication with said engaging grooves,
said limiting member being formed with an elongated slot that extends from said inner surface to said outer surface thereof, and that is registered with said engaging grooves when said adjustable member is disposed at the first angular position and said guiding groove when said adjustable member is disposed at the second angular position,
said second restricting member including an engaging protrusion that extends from said end portion of said handle member through said elongated slot in said limiting member,
said engaging protrusion being disposed in a selected one of said engaging grooves when said adjustable member is disposed at the first angular position,
said engaging protrusion being disposed in said guiding groove when said adjustable member is disposed at the second angular position.
6. The weightlifting device as claimed in claim 3 , wherein said limiting member is formed with an elongated hole that extends from said inner surface to said outer surface thereof, said weightlifting device further comprising a retaining unit for retaining said weight plates on said adjustable member, said retaining unit including
a secured member that extends through said elongated hole in said limiting member, and that is secured to said adjustable member so as to be co-movable with said adjustable member between the first and second angular positions, and
a movable member that is coupled movably to said secured member, and that is movable relative to said secured member between an engaging position, where said movable member engages an outermost one of said weight plates, and a second position, where said movable member is disengaged from said outermost one of said weight plates.
7. The weightlifting device as claimed in claim 6 , wherein said movable member includes an engaging piece sleeved slidably on said secured member, and said secured member has a free end provided with an abutting piece, said retaining unit further including a biasing member for biasing said movable member to the engaging position, said biasing member having opposite ends that respectively abut against said abutting piece of said secured member and said engaging piece of said movable member.
8. The weightlifting device as claimed in claim 6 , wherein each of said weight plates is further formed with a second through-hole that is in spatial communication with said first through-hole in a respective one of said weight plates and that permits said movable member of said retaining unit to pass therethrough when said adjustable member is moved axially relative to said handle member.
9. The weightlifting device as claimed in claim 8 , wherein each of said weight plates is formed with a third through-hole that is in spatial communication with the second through-hole and that is defined by a hole-defining wall,
said engaging piece of said movable member including an engaging body, and an engaging arm that extends from said engaging body, that has a hook shape, and that engages said hole-defining wall of said outermost one of said weight plates when said movable member is disposed at the engaging position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/100,255 US20080188362A1 (en) | 2006-12-19 | 2008-04-09 | Weightlifting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US11/642,367 US7485077B2 (en) | 2006-12-19 | 2006-12-19 | Weightlifting device |
US12/100,255 US20080188362A1 (en) | 2006-12-19 | 2008-04-09 | Weightlifting device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/642,367 Continuation-In-Part US7485077B2 (en) | 2006-12-19 | 2006-12-19 | Weightlifting device |
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US20080188362A1 true US20080188362A1 (en) | 2008-08-07 |
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US12/100,255 Abandoned US20080188362A1 (en) | 2006-12-19 | 2008-04-09 | Weightlifting device |
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WO2009070082A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbel |
WO2009070084A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbell |
WO2009070083A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbell |
US8007415B1 (en) * | 2009-05-22 | 2011-08-30 | Recreation Supply, Inc. | Adjustable dumbbell and system |
US8485946B2 (en) | 2009-12-14 | 2013-07-16 | Exemplar Design, Llc | Turn weight plate |
US20130231224A1 (en) * | 2012-03-05 | 2013-09-05 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
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US9498668B2 (en) | 2014-03-10 | 2016-11-22 | Icon Health & Fitness, Inc. | Automated weight selector |
US9649246B1 (en) * | 2012-01-25 | 2017-05-16 | Ronald B. Johnson | Massage device and removeable mounting system |
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US10252109B2 (en) | 2016-05-13 | 2019-04-09 | Icon Health & Fitness, Inc. | Weight platform treadmill |
US10258828B2 (en) | 2015-01-16 | 2019-04-16 | Icon Health & Fitness, Inc. | Controls for an exercise device |
US10272317B2 (en) | 2016-03-18 | 2019-04-30 | Icon Health & Fitness, Inc. | Lighted pace feature in a treadmill |
US10279212B2 (en) | 2013-03-14 | 2019-05-07 | Icon Health & Fitness, Inc. | Strength training apparatus with flywheel and related methods |
US10293211B2 (en) | 2016-03-18 | 2019-05-21 | Icon Health & Fitness, Inc. | Coordinated weight selection |
US10343017B2 (en) | 2016-11-01 | 2019-07-09 | Icon Health & Fitness, Inc. | Distance sensor for console positioning |
US10376736B2 (en) | 2016-10-12 | 2019-08-13 | Icon Health & Fitness, Inc. | Cooling an exercise device during a dive motor runway condition |
US10426989B2 (en) | 2014-06-09 | 2019-10-01 | Icon Health & Fitness, Inc. | Cable system incorporated into a treadmill |
US10433612B2 (en) | 2014-03-10 | 2019-10-08 | Icon Health & Fitness, Inc. | Pressure sensor to quantify work |
US10441844B2 (en) | 2016-07-01 | 2019-10-15 | Icon Health & Fitness, Inc. | Cooling systems and methods for exercise equipment |
US10441840B2 (en) | 2016-03-18 | 2019-10-15 | Icon Health & Fitness, Inc. | Collapsible strength exercise machine |
US10449416B2 (en) | 2015-08-26 | 2019-10-22 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10471299B2 (en) | 2016-07-01 | 2019-11-12 | Icon Health & Fitness, Inc. | Systems and methods for cooling internal exercise equipment components |
US10493349B2 (en) | 2016-03-18 | 2019-12-03 | Icon Health & Fitness, Inc. | Display on exercise device |
US10500473B2 (en) | 2016-10-10 | 2019-12-10 | Icon Health & Fitness, Inc. | Console positioning |
US10543395B2 (en) | 2016-12-05 | 2020-01-28 | Icon Health & Fitness, Inc. | Offsetting treadmill deck weight during operation |
US10561894B2 (en) | 2016-03-18 | 2020-02-18 | Icon Health & Fitness, Inc. | Treadmill with removable supports |
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US20200147440A1 (en) * | 2018-11-09 | 2020-05-14 | Carl K. Towley, III | Dumbbell handle having a dislodgement preventing interface with the weight selector of a selectorized dumbbell |
US10661114B2 (en) | 2016-11-01 | 2020-05-26 | Icon Health & Fitness, Inc. | Body weight lift mechanism on treadmill |
US10729965B2 (en) | 2017-12-22 | 2020-08-04 | Icon Health & Fitness, Inc. | Audible belt guide in a treadmill |
US10786700B2 (en) | 2018-02-02 | 2020-09-29 | Jaxamo Ltd | Exercise devices, systems, and methods |
US10940360B2 (en) | 2015-08-26 | 2021-03-09 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
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WO2009070084A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbell |
WO2009070083A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbell |
US20100304939A1 (en) * | 2007-11-29 | 2010-12-02 | Tomas Svenberg | Dumbbell |
US20100304940A1 (en) * | 2007-11-29 | 2010-12-02 | Thomas Svenberg | Dumbbell |
WO2009070082A1 (en) * | 2007-11-29 | 2009-06-04 | Tomas Svenberg | Dumbbel |
US8529415B2 (en) | 2007-11-29 | 2013-09-10 | Tomas Svenberg | Dumbbell |
US8715143B2 (en) | 2007-11-29 | 2014-05-06 | Tomas Svenberg | Dumbbell |
US8007415B1 (en) * | 2009-05-22 | 2011-08-30 | Recreation Supply, Inc. | Adjustable dumbbell and system |
US8485946B2 (en) | 2009-12-14 | 2013-07-16 | Exemplar Design, Llc | Turn weight plate |
US9649246B1 (en) * | 2012-01-25 | 2017-05-16 | Ronald B. Johnson | Massage device and removeable mounting system |
US10232214B2 (en) * | 2012-03-05 | 2019-03-19 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US9566465B2 (en) * | 2012-03-05 | 2017-02-14 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20150094194A1 (en) * | 2012-03-05 | 2015-04-02 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US11013947B2 (en) * | 2012-03-05 | 2021-05-25 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US9452312B2 (en) * | 2012-03-05 | 2016-09-27 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US8932188B2 (en) * | 2012-03-05 | 2015-01-13 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20190168058A1 (en) * | 2012-03-05 | 2019-06-06 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20130231224A1 (en) * | 2012-03-05 | 2013-09-05 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20170072245A1 (en) * | 2012-03-05 | 2017-03-16 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20140135185A1 (en) * | 2012-10-05 | 2014-05-15 | Icon Health & Fitness, Inc. | Weight Selector Assemblies, Exercise Machines Including Such Weight Selector Assemblies, and Related Methods |
US9144703B2 (en) * | 2012-10-05 | 2015-09-29 | Icon Health & Fitness, Inc. | Weight selector assemblies, exercise machines including such weight selector assemblies, and related methods |
USRE49161E1 (en) | 2013-02-13 | 2022-08-09 | Vintage Gold Holdings Limited | Weight set selector and locking mechanism |
EP2956218A4 (en) * | 2013-02-13 | 2016-10-26 | Vintage Gold Holdings Ltd | Weight set selector and locking mechanism |
US10166427B2 (en) | 2013-02-13 | 2019-01-01 | Vintage Gold Holdings Limited | Weight set selector and locking mechanism |
US10279212B2 (en) | 2013-03-14 | 2019-05-07 | Icon Health & Fitness, Inc. | Strength training apparatus with flywheel and related methods |
US10188890B2 (en) | 2013-12-26 | 2019-01-29 | Icon Health & Fitness, Inc. | Magnetic resistance mechanism in a cable machine |
US9849326B2 (en) | 2014-03-10 | 2017-12-26 | Icon Health & Fitness, Inc. | Magnetic weight selector |
US10433612B2 (en) | 2014-03-10 | 2019-10-08 | Icon Health & Fitness, Inc. | Pressure sensor to quantify work |
US9498668B2 (en) | 2014-03-10 | 2016-11-22 | Icon Health & Fitness, Inc. | Automated weight selector |
US10426989B2 (en) | 2014-06-09 | 2019-10-01 | Icon Health & Fitness, Inc. | Cable system incorporated into a treadmill |
US10258828B2 (en) | 2015-01-16 | 2019-04-16 | Icon Health & Fitness, Inc. | Controls for an exercise device |
US10953305B2 (en) | 2015-08-26 | 2021-03-23 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10940360B2 (en) | 2015-08-26 | 2021-03-09 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10449416B2 (en) | 2015-08-26 | 2019-10-22 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10272317B2 (en) | 2016-03-18 | 2019-04-30 | Icon Health & Fitness, Inc. | Lighted pace feature in a treadmill |
US10625137B2 (en) | 2016-03-18 | 2020-04-21 | Icon Health & Fitness, Inc. | Coordinated displays in an exercise device |
US10441840B2 (en) | 2016-03-18 | 2019-10-15 | Icon Health & Fitness, Inc. | Collapsible strength exercise machine |
US10493349B2 (en) | 2016-03-18 | 2019-12-03 | Icon Health & Fitness, Inc. | Display on exercise device |
US10293211B2 (en) | 2016-03-18 | 2019-05-21 | Icon Health & Fitness, Inc. | Coordinated weight selection |
US10561894B2 (en) | 2016-03-18 | 2020-02-18 | Icon Health & Fitness, Inc. | Treadmill with removable supports |
US10252109B2 (en) | 2016-05-13 | 2019-04-09 | Icon Health & Fitness, Inc. | Weight platform treadmill |
US10471299B2 (en) | 2016-07-01 | 2019-11-12 | Icon Health & Fitness, Inc. | Systems and methods for cooling internal exercise equipment components |
US10441844B2 (en) | 2016-07-01 | 2019-10-15 | Icon Health & Fitness, Inc. | Cooling systems and methods for exercise equipment |
US10500473B2 (en) | 2016-10-10 | 2019-12-10 | Icon Health & Fitness, Inc. | Console positioning |
US10376736B2 (en) | 2016-10-12 | 2019-08-13 | Icon Health & Fitness, Inc. | Cooling an exercise device during a dive motor runway condition |
US10661114B2 (en) | 2016-11-01 | 2020-05-26 | Icon Health & Fitness, Inc. | Body weight lift mechanism on treadmill |
US10343017B2 (en) | 2016-11-01 | 2019-07-09 | Icon Health & Fitness, Inc. | Distance sensor for console positioning |
US10543395B2 (en) | 2016-12-05 | 2020-01-28 | Icon Health & Fitness, Inc. | Offsetting treadmill deck weight during operation |
CN107335173A (en) * | 2017-07-21 | 2017-11-10 | 谭威 | A kind of dumbbell for preventing dumbbell disk from rotating |
US11451108B2 (en) | 2017-08-16 | 2022-09-20 | Ifit Inc. | Systems and methods for axial impact resistance in electric motors |
US10729965B2 (en) | 2017-12-22 | 2020-08-04 | Icon Health & Fitness, Inc. | Audible belt guide in a treadmill |
US10786700B2 (en) | 2018-02-02 | 2020-09-29 | Jaxamo Ltd | Exercise devices, systems, and methods |
US20200147440A1 (en) * | 2018-11-09 | 2020-05-14 | Carl K. Towley, III | Dumbbell handle having a dislodgement preventing interface with the weight selector of a selectorized dumbbell |
US10953264B2 (en) * | 2018-11-09 | 2021-03-23 | Powerblock Holdings, Inc. | Dumbbell handle having a dislodgement preventing interface with the weight selector of a selectorized dumbbell |
US20220401785A1 (en) * | 2021-06-18 | 2022-12-22 | LifePro Fitness LLC | Adjustable dumbbell with weight adjusting key using a clevis pin |
US11850464B2 (en) * | 2021-06-18 | 2023-12-26 | LifePro Fitness LLC | Adjustable dumbbell with weight adjusting key using a clevis pin |
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Legal Events
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STCB | Information on status: application discontinuation |
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