CA1163286A - Folding two-wheeled hand truck - Google Patents
Folding two-wheeled hand truckInfo
- Publication number
- CA1163286A CA1163286A CA000386763A CA386763A CA1163286A CA 1163286 A CA1163286 A CA 1163286A CA 000386763 A CA000386763 A CA 000386763A CA 386763 A CA386763 A CA 386763A CA 1163286 A CA1163286 A CA 1163286A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- spring
- handle
- biased
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Handcart (AREA)
Abstract
ABSTRACT
A hand truck has a frame; a pair of rotating bars rotatably at-taching to the frame. Each bar includes a wheel rotatably attached thereon, a handle attached to one end of the bar and a first gear connected to the other end. Handle release and locking members are attached to the frame and lock the wheels and the handle either in an outward operative position or in a closed storing position. A
support bar is rotatably connected to the frame. A second sear is attached to each end of the support bar and meshes with the first gear on each side of the pair of rotating bars. A load support plate is bound to the support bar in order to support a load when the wheels and handle are in the outward operative position.
A hand truck has a frame; a pair of rotating bars rotatably at-taching to the frame. Each bar includes a wheel rotatably attached thereon, a handle attached to one end of the bar and a first gear connected to the other end. Handle release and locking members are attached to the frame and lock the wheels and the handle either in an outward operative position or in a closed storing position. A
support bar is rotatably connected to the frame. A second sear is attached to each end of the support bar and meshes with the first gear on each side of the pair of rotating bars. A load support plate is bound to the support bar in order to support a load when the wheels and handle are in the outward operative position.
Description
~3~J8~
FOLDING TWO-WHEELED HAND TRUCK
-This invention is related to a ~wo-wheeled hand truck. More specifically, this invention Provides a hand truck which can be easily folded for storing and transportation, U. S, Patent No. 3,043,603 bY Major, Sr. discloses a two-wheeled hand truck with Pivoted wheel supports. U. S. Patent r~O. 3,166,339 by Earley discloses a folding lawn cart. U. S. Patent ~'o. 3,241,852 by Muller et al illustrates a foldins cart for outboard motors. U. S.
Patent No. 3,659,867 by CurrY teaches a foldable two-wheel dolly.
None of the foregoing Prior art teaches or suggests this invention.
This invention accomplishes its desired obiects bY providins a two-wheeled hand truck comPrisins a frame having a longitudinal axis and being generallY uPrisht in an oPerative or stored Position~ A
Pair of rotating bars rotatably attach to the frame and rotate about the longitudinal axis. Each bar has a wheel rotatablY attached there-on, a handle means attached to one end of the bar, and a first sear means connected to the other end of the bar. A handle release and lockins means attached to the frame and locks the wheels and the hand-le means either in an outward operat~ve Position or in a closed stor-ing Position~ A suPport bar rotatablY connects to the frame. A sec-ond sear means attached to each end of the suPPort bar and meshes with the first gear means on each end of the Pair of ~he pair of ro-tating bars. A load suPport means is bound to the su~Port bar in or-der to supPort a load when the wheels and handle are in the outward oPerative Position.
It is an obiect of the invention to Provide a two-wheeled hand truck.
Still further obiects of the invention reside in the provision of a two-wheeled hand truck which can be easilY stored, Provides an easY
accessibility lever for foldins out the hand trucks into an oPerative Position~ and is relatively inexPensive to manufacture.
FOLDING TWO-WHEELED HAND TRUCK
-This invention is related to a ~wo-wheeled hand truck. More specifically, this invention Provides a hand truck which can be easily folded for storing and transportation, U. S, Patent No. 3,043,603 bY Major, Sr. discloses a two-wheeled hand truck with Pivoted wheel supports. U. S. Patent r~O. 3,166,339 by Earley discloses a folding lawn cart. U. S. Patent ~'o. 3,241,852 by Muller et al illustrates a foldins cart for outboard motors. U. S.
Patent No. 3,659,867 by CurrY teaches a foldable two-wheel dolly.
None of the foregoing Prior art teaches or suggests this invention.
This invention accomplishes its desired obiects bY providins a two-wheeled hand truck comPrisins a frame having a longitudinal axis and being generallY uPrisht in an oPerative or stored Position~ A
Pair of rotating bars rotatably attach to the frame and rotate about the longitudinal axis. Each bar has a wheel rotatablY attached there-on, a handle means attached to one end of the bar, and a first sear means connected to the other end of the bar. A handle release and lockins means attached to the frame and locks the wheels and the hand-le means either in an outward operat~ve Position or in a closed stor-ing Position~ A suPport bar rotatablY connects to the frame. A sec-ond sear means attached to each end of the suPPort bar and meshes with the first gear means on each end of the Pair of ~he pair of ro-tating bars. A load suPport means is bound to the su~Port bar in or-der to supPort a load when the wheels and handle are in the outward oPerative Position.
It is an obiect of the invention to Provide a two-wheeled hand truck.
Still further obiects of the invention reside in the provision of a two-wheeled hand truck which can be easilY stored, Provides an easY
accessibility lever for foldins out the hand trucks into an oPerative Position~ and is relatively inexPensive to manufacture.
-2-j ~ ~3~86 These together with the vario~s ancillarY objects and features which will become aPparent as the follQ~ins description proceeds are attained b~ this hnnd truck, a Preferred embodiment being shown in the accom~anYins drawinss, by waY of example onlY, wherein:
FIG. 1 is a Perspective view of the invention;
FIG. 2 is a front elevational view of the invention;
FIG. 3 is a tOP Plan view of the invention with dotted lines indicatins the stored Position of the wheels and handle;
FIG. 4 is a side elevational view of the invention with dotted lines indicating the upright stored Position of the suPport Plate;
FIG, 5 is a rear elevational view of the invention;
FIG. 6 is a vertical sectional view taken alons the Plane of line 5-5 in FIG. 4;
FIG. 7 is a partial enlarged Partially sectional view of a lock-ins Pin and a cylindrical retention member;
FIG. 8 is a vertical sectional view taken alons the Plane of line 7-7 in FIG. 5;
FIG. 9 is a p~rtial vertica]. sectional view of the frame connect-ing to a rotating bar; and FIG. 10 is a partial view of the coil connectins to a lockins pin~
Referring in detail now to the drawinss, wherein like reference numerals designate similar Parts throughout the various views, there is seen a two-wheeled hand truck, senerallY illustrated as 10, com-prising a frame 12 with a lon~itudinal axis and generallY uPright when the hand truck 10 is in an uPrisht or stored position. A Pair of rotating bars 14 rotatably attach to the frame 12 and rotate a-bout the longitudinal axis. Wheels 16 rotatablY attach to wheel ensagins members 18 which are bound to the rotatin~ bars 14. A hand-le 20 attached to an end of each bar 14, and a first sear 22 (see FIG. 6) connects to the other end of each bar 14. A handle release ~ 8~
' and locking means, generallY illustrated as 24 (see FIG. 6), attach-es to the frame 12 and locks the wheels 16 and the handle 20 either in an outward oPerative Position (see FIG, 1) or in a closed storing POSi~ion. A suPPort bar 25 rotatably connects to the frame 12 and a second gear 28 (see FIG. 6) attaches to each end of the suPport bar 26 and meshes with the first sear 22 on each end of the Pair of rotating bars 14. A load suPPort plate 30 is bound to the suPPort bar ~6 in order to suPport a load when the wheels 16 and handle 20 are in the outward oPerative position in FIG. 1. In operation of the invention, the wheels 16 fold out from the frame 12 (see direction of arrows in FIG. 3) toward the eventual operative perPendicular Position with resPect to the frame 12 as each handle 20 on each of the rotatins bars 14 is released by the handle release and locking means 24 and rotated outwardly from the dotted line Position of FIG. 3. This si-multaneously causes the first gear 22 on each bar 14 to engage and turn the second ~ear 28 on each end of the suPport bar 26 resultins in the support bar 26 rotating to fold out the suPport plate 30 (see FIG. 4) to a generallY Perpendicular Position with resPect to the frame 12 wherein each of the handles 20 is Positioned in the locked : 20 Position of FIGS. 1-4, The handle release and locking means 24 comprise two generally cylindrical members 32 (see FIGS~ 6 and 7) bound to rotatins bar 14 and include an oPenins recess 34 and a closing recess 36; and a pair of spring-biased locking Pins 38 oPpositely situated with resPect to each other. The cYlindrical retention members 32 are attached to the rotatin~ bars 14 between the wheel-engagins member 1~ and the handle 20. In operation of the invention~ one of the ~ins 38 inserts into the oPening recess 34 of one cYlindrical member 32 and simultaneously the other Pin 38 inserts into the opening recess 34 of the other cy-lindrical member 32 when each of the handles 20 is locked in the open ~ 8~
position. Vice versa, in the continuins oPeration of the invention, one of the Pins 38 inserts into the closing recess 36 of one cYlindri-cul member 32 and the other Pin 38 simultaneously inserts into the closins recess 36 of the other cylindrical member 32 when each handle 20 is locked in the dotted line inward closed Position of FIG. 3. A
sprins-biased Pin contractin~ means 40 (preferably a coil) attached to sprins-biased Pins 38 to contract the same in order to release the handles 20, the wheels 16 and the suPport plate 30 fro~ either the oPen or the closed Position. The handle release and lockin~ means 24 also comprises sPrins-biased toe activating means generallY illustrat-ed as 42 (see FIGS. 6 and 9), for ensasing the coil 40.
Toe activatin~ means 42 includes an essentially tubular member 44 with a slot 46 attached to the frame 12 between the sPrins-biased Pins 38, ~ toe engasing member 48 slidably lodses within the tubular mem-ber 44 and has a senerallY T-shaPed structural Portion 50 protruding throush slot 46 in order that, in oPeration of the invention, Portion 50 is accessible for a downward motion (see FIG, 9) caused by a human foot for engaging the coil 40, Coiled sPrin~ 52 engages the toe en-sasins member 48 within the tubular member 44 for disensa~ins same from the coil 40 (see dotted line position in FIG, 9).
While the Present invention has been described herein with refer-ence to Particular embodiments thereof, a latitude of modifications, various changes and substitutions are intended in the foregoing dis-closure, and it will be aPpreciated that in someinstances some fea-tures of the invention will be emPloyed without a corresPondins use of other features without departing from the scoPe of the invention as set forth.
FIG. 1 is a Perspective view of the invention;
FIG. 2 is a front elevational view of the invention;
FIG. 3 is a tOP Plan view of the invention with dotted lines indicatins the stored Position of the wheels and handle;
FIG. 4 is a side elevational view of the invention with dotted lines indicating the upright stored Position of the suPport Plate;
FIG, 5 is a rear elevational view of the invention;
FIG. 6 is a vertical sectional view taken alons the Plane of line 5-5 in FIG. 4;
FIG. 7 is a partial enlarged Partially sectional view of a lock-ins Pin and a cylindrical retention member;
FIG. 8 is a vertical sectional view taken alons the Plane of line 7-7 in FIG. 5;
FIG. 9 is a p~rtial vertica]. sectional view of the frame connect-ing to a rotating bar; and FIG. 10 is a partial view of the coil connectins to a lockins pin~
Referring in detail now to the drawinss, wherein like reference numerals designate similar Parts throughout the various views, there is seen a two-wheeled hand truck, senerallY illustrated as 10, com-prising a frame 12 with a lon~itudinal axis and generallY uPright when the hand truck 10 is in an uPrisht or stored position. A Pair of rotating bars 14 rotatably attach to the frame 12 and rotate a-bout the longitudinal axis. Wheels 16 rotatablY attach to wheel ensagins members 18 which are bound to the rotatin~ bars 14. A hand-le 20 attached to an end of each bar 14, and a first sear 22 (see FIG. 6) connects to the other end of each bar 14. A handle release ~ 8~
' and locking means, generallY illustrated as 24 (see FIG. 6), attach-es to the frame 12 and locks the wheels 16 and the handle 20 either in an outward oPerative Position (see FIG, 1) or in a closed storing POSi~ion. A suPPort bar 25 rotatably connects to the frame 12 and a second gear 28 (see FIG. 6) attaches to each end of the suPport bar 26 and meshes with the first sear 22 on each end of the Pair of rotating bars 14. A load suPPort plate 30 is bound to the suPPort bar ~6 in order to suPport a load when the wheels 16 and handle 20 are in the outward oPerative position in FIG. 1. In operation of the invention, the wheels 16 fold out from the frame 12 (see direction of arrows in FIG. 3) toward the eventual operative perPendicular Position with resPect to the frame 12 as each handle 20 on each of the rotatins bars 14 is released by the handle release and locking means 24 and rotated outwardly from the dotted line Position of FIG. 3. This si-multaneously causes the first gear 22 on each bar 14 to engage and turn the second ~ear 28 on each end of the suPport bar 26 resultins in the support bar 26 rotating to fold out the suPport plate 30 (see FIG. 4) to a generallY Perpendicular Position with resPect to the frame 12 wherein each of the handles 20 is Positioned in the locked : 20 Position of FIGS. 1-4, The handle release and locking means 24 comprise two generally cylindrical members 32 (see FIGS~ 6 and 7) bound to rotatins bar 14 and include an oPenins recess 34 and a closing recess 36; and a pair of spring-biased locking Pins 38 oPpositely situated with resPect to each other. The cYlindrical retention members 32 are attached to the rotatin~ bars 14 between the wheel-engagins member 1~ and the handle 20. In operation of the invention~ one of the ~ins 38 inserts into the oPening recess 34 of one cYlindrical member 32 and simultaneously the other Pin 38 inserts into the opening recess 34 of the other cy-lindrical member 32 when each of the handles 20 is locked in the open ~ 8~
position. Vice versa, in the continuins oPeration of the invention, one of the Pins 38 inserts into the closing recess 36 of one cYlindri-cul member 32 and the other Pin 38 simultaneously inserts into the closins recess 36 of the other cylindrical member 32 when each handle 20 is locked in the dotted line inward closed Position of FIG. 3. A
sprins-biased Pin contractin~ means 40 (preferably a coil) attached to sprins-biased Pins 38 to contract the same in order to release the handles 20, the wheels 16 and the suPport plate 30 fro~ either the oPen or the closed Position. The handle release and lockin~ means 24 also comprises sPrins-biased toe activating means generallY illustrat-ed as 42 (see FIGS. 6 and 9), for ensasing the coil 40.
Toe activatin~ means 42 includes an essentially tubular member 44 with a slot 46 attached to the frame 12 between the sPrins-biased Pins 38, ~ toe engasing member 48 slidably lodses within the tubular mem-ber 44 and has a senerallY T-shaPed structural Portion 50 protruding throush slot 46 in order that, in oPeration of the invention, Portion 50 is accessible for a downward motion (see FIG, 9) caused by a human foot for engaging the coil 40, Coiled sPrin~ 52 engages the toe en-sasins member 48 within the tubular member 44 for disensa~ins same from the coil 40 (see dotted line position in FIG, 9).
While the Present invention has been described herein with refer-ence to Particular embodiments thereof, a latitude of modifications, various changes and substitutions are intended in the foregoing dis-closure, and it will be aPpreciated that in someinstances some fea-tures of the invention will be emPloyed without a corresPondins use of other features without departing from the scoPe of the invention as set forth.
Claims (7)
1. A hand truck comprising a frame having a longitudinal axis and generally upright in an operative or stored position;
a pair of rotating bars rotatably attached to said frame and rotating about said longitudinal axis;
each bar including a wheel rotatably attached thereon, a handle means attached to one end of said bars and a first gear means con-nected to the other end of same;
a handle release and locking means attached to said frame and locking wheels and the handle means in either an outward operative position perpendiculart to said frame or in a closed storing position;
a support bar rotatably connected to said frame;
a second gear means attached to each end of said support bar and meshing with the first gear means on each end of said pair of rotat-ing bars;
a load support means bound to said support bar in order to sup-port a load when said wheels and handle means are in the outward op-erative position;
said wheels folding out from said frame toward the eventually op-erative perpendicular position with respect to the frame as each hand-le means on each of the rotating bars is released by the handle re-lease and locking means and rotated outwardly which simultaneously causes the first gear means on each rotating bar to engage and turn the second gear means on each end of said support bar resulting in the support bar rotating to fold out the support means to a generally perpendicular position with respect to the frame wherein each of the handle means is positioned in a locked operative position.
a pair of rotating bars rotatably attached to said frame and rotating about said longitudinal axis;
each bar including a wheel rotatably attached thereon, a handle means attached to one end of said bars and a first gear means con-nected to the other end of same;
a handle release and locking means attached to said frame and locking wheels and the handle means in either an outward operative position perpendiculart to said frame or in a closed storing position;
a support bar rotatably connected to said frame;
a second gear means attached to each end of said support bar and meshing with the first gear means on each end of said pair of rotat-ing bars;
a load support means bound to said support bar in order to sup-port a load when said wheels and handle means are in the outward op-erative position;
said wheels folding out from said frame toward the eventually op-erative perpendicular position with respect to the frame as each hand-le means on each of the rotating bars is released by the handle re-lease and locking means and rotated outwardly which simultaneously causes the first gear means on each rotating bar to engage and turn the second gear means on each end of said support bar resulting in the support bar rotating to fold out the support means to a generally perpendicular position with respect to the frame wherein each of the handle means is positioned in a locked operative position.
2. The hand truck of Claim 1 wherein said handle release and locking means comprises two generally cylindrical retention members, one retention member being bound to one rotating bar and the other bound to the other rotating bar, said cylindrical retention members having a structure defined by an opening recess and a closing recess;
a pair of spring-biased locking pins oppositely situated with respect to each other;
one of said pins inserting into the opening recess of one cylin-drical member and simultaneously the other pin inserting into the opening recess of the other cylindrical member when each of said hand-le means is locked in the open position;
one of said pins inserting into the closing recess of one cylin-drical member and the other pin sumultaneously insering into the closing recess of the other cylindrical member when each of said hand-le means is locked in the inward closed position;
a spring-biased pin contracting means attached to said spring-biased pins to contract said spring-biased pins to release said hand-le means, said wheels and said support means from either the open position or the closed position; and spring-biased toe activating means for engaging said spring-biased pin contracting means.
a pair of spring-biased locking pins oppositely situated with respect to each other;
one of said pins inserting into the opening recess of one cylin-drical member and simultaneously the other pin inserting into the opening recess of the other cylindrical member when each of said hand-le means is locked in the open position;
one of said pins inserting into the closing recess of one cylin-drical member and the other pin sumultaneously insering into the closing recess of the other cylindrical member when each of said hand-le means is locked in the inward closed position;
a spring-biased pin contracting means attached to said spring-biased pins to contract said spring-biased pins to release said hand-le means, said wheels and said support means from either the open position or the closed position; and spring-biased toe activating means for engaging said spring-biased pin contracting means.
3. The hand truck of Claim 2 wherein said spring-biased toe activating means comprises an essentially tubular member attached to said frame between said spring-biased pins, said tubular member having a structure defining a slotted aperture;
a toe engaging member slidably lodging within said tubular mem-ber and including a generally T-shaped structural portion protruding through said slotted aperture in order to be accessible for a down-ward motion caused by a human foot for engaging said spring-biased pin contracting means; and a coiled spring engaging said toe engaging member within said tubular member for disengaging same from said contracting means,
a toe engaging member slidably lodging within said tubular mem-ber and including a generally T-shaped structural portion protruding through said slotted aperture in order to be accessible for a down-ward motion caused by a human foot for engaging said spring-biased pin contracting means; and a coiled spring engaging said toe engaging member within said tubular member for disengaging same from said contracting means,
4. The hand truck of Claim 3 wherein said spring-biased pin contracting means is a coil.
5. The hand truck of Claim 4 additionally including two wheel-engaging members for rotatably holding said wheels and bound to said rotating bars in proximity to said first gear means.
6. The hand truck of Claim 5 wherein said cylindrical retention members are attached to said rotating bars between said wheel-engaging members and said handle means.
7. The hand truck of Claim 6 wherein said supporting means is a support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000386763A CA1163286A (en) | 1981-09-28 | 1981-09-28 | Folding two-wheeled hand truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000386763A CA1163286A (en) | 1981-09-28 | 1981-09-28 | Folding two-wheeled hand truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1163286A true CA1163286A (en) | 1984-03-06 |
Family
ID=4121038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000386763A Expired CA1163286A (en) | 1981-09-28 | 1981-09-28 | Folding two-wheeled hand truck |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1163286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072958A (en) * | 1991-02-19 | 1991-12-17 | Young Horace J | Hand truck |
-
1981
- 1981-09-28 CA CA000386763A patent/CA1163286A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072958A (en) * | 1991-02-19 | 1991-12-17 | Young Horace J | Hand truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |