Patent US3797849A successfully refreshed from Google Patents.
US3797849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand propelled cart
Assignee: Individual
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Filing: 1973-02-05
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Granted: 1974-03-19
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Expires: 1993-02-05
Abstract
Abstract A hand propelled cart which can be adapted for holding an infant carrying seat comprises a cart frame, a principal axle having a pair of oversized wheels mounted thereon, a substantially upright handle attached to said cart frame, a pair of brake supports attached to said cart frame adjacent each of said oversize wheels, a spring friction biased U-shaped braking frame, comprising two sides and a crossarm, the sides of which are adapted to pass, respectively, through said pair of brake supports and engage therewith in a spring friction fit, the open ends of said U-shaped frame having perpendicular extensions depending therefrom, said extensions being adapted to contact the tread on said oversize wheels and serving to brake said cart, said crossarm serving to support said cart in an intermediate rest position, the center of gravity of said cart lying between said principal axle and said crossarm when said oversize wheels and said crossarm rest on the ground.
Inventors
- 👤 D Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:03
CPC Classifications
B; B62; B62B; B62B7/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
220 words
A hand propelled cart adapted for holding an infant carrying seat, comprising: a cart frame adapted to receive an infant carrying seat; a principal axle attached rearwardly of said frame; a pair of oversize wheels coaxially mounted on opposing ends of said principal axle; upright handle means attached to said frame; a pair of brake supports terminating in tubular shaped flanges attached to said cart frame respectively, adjacent each of said oversize wheels; a spring biased U-shaped braking frame, comprising two sides and a crossarm, the sides of which pass, respectively, through each of said brake supports and engage therewith in a spring friction fit, the crossarm resting on the rearward side of said principal axle, the open ends of said sides of said U-shaped braking frame having wheel engaging extensions attached perpendicularly therEto to permit said cart to be braked by rearward movement of said crossarm and engagement of said extensions with the tread of said oversize wheels and to permit said cart to be placed in an intermediate rest position at which said crossarm and said oversize wheels rest on the ground; an auxiliary axle attached to said cart frame in parallel relation to said principal axle and on the forward side thereof; and a pair of front wheels coaxially mounted on opposing ends of said auxiliary axle.
Claim 2
Dependent Claim
220 words
A hand propelled cart adapted for holding an infant carrying seat, comprising: a cart frame adapted to receive an infant carrying seat; a principal axle attached rearwardly of said frame; a pair of oversize wheels coaxially mounted on opposing ends of said principal axle; upright handle means attached to said frame; a pair of brake supports terminating in tubular shaped flanges attached to said cart frame respectively, adjacent each of said oversize wheels; a spring biased U-shaped braking frame, comprising two sides and a crossarm, the sides of which pass, respectively, through each of said brake supports and engage therewith in a spring friction fit, the crossarm resting on the rearward side of said principal axle, the open ends of said sides of said U-shaped braking frame having wheel engaging extensions attached perpendicularly therEto to permit said cart to be braked by rearward movement of said crossarm and engagement of said extensions with the tread of said oversize wheels and to permit said cart to be placed in an intermediate rest position at which said crossarm and said oversize wheels rest on the ground; an auxiliary axle attached to said cart frame in parallel relation to said principal axle and on the forward side thereof; and a pair of front wheels coaxially mounted on opposing ends of said auxiliary axle.
Claim 3
Dependent Claim
88 words
A hand propelled cart in accordance with claim 1 in which said upright handle includes a tubular member inserted within a square cross section channel member, said tubular member having a diameter slightly less than the inside dimension of said square cross section channel member, and said tubular member having at least one nub protruding therefrom, said nub being positioned to ride in an open interior corner of said square cross section channel member to prevent said tubular member from rotating within said square cross section channel member.
Claim 4
Dependent Claim
84 words
A hand propelled cart in accordance with claim 2 wherein said cart frame includes an inverted U-shaped handle support the ends of which are attached, respectively, to parallel runners at approximately right angles thereto and forwardly of said principal axle, said parallel runners forming the base of said frame, the center of said inverted U-shaped handle support being attached to said square cross section channel member, said square cross section channel member having a passageway at the bottom thereof to accommodate said principal axle.
Claim 5
Dependent Claim
39 words
A hand propelled cart in accordance with claim 3 wherein the height of said upright handle is adjustable between a collapsed resting height and an expanded height at which the handle may be gripped as the cart is moved.
Claim 6
Dependent Claim
66 words
A hand propelled cart in accordance with claim 4, wherein said handle is fixedly held in said expanded position by a resilient V-shaped locking member compressively held within said tubular member, the tips of said V-shaped member being positioned adjacent openings in said tubular member so that said tips will pass through said openings and fit into matched openings configured in said square cross section channeling.
Claim 7
Dependent Claim
76 words
A hand propelled cart in accordance with claim 5 in combination with an L-shaped foot rest attached forwardly of said cart frame so the lower lip of said foot rest acts as a front bumper to permit an infant positioned in said infant carrying seat to rest his feet on said lip and to dangle the back of his feet against the back of said foot rest to prevent them from swinging under said cart frame.
Claim 8
Dependent Claim
28 words
A hand propelled cart in accordance with claim 6 in combination with a utility bag attached rearwardly of said cart frame and positioned generally between said oversize wheels.
Claim 9
Dependent Claim
21 words
A hand propelled cart in accordance with claim 6 in combination with an infant carrying seat positioned within said cart frame.
Claim 10
Dependent Claim
179 words
A hand propelled cart, comprising: a cart frame; an axle means having a pair of oversize friction wheels coaxially mounted on opposing ends of said axle means; upright handle means attached to said frame; a pair of brake supports terminating in tubular shaped flanges, said brake supports being mounted, respectively, on said frame adjacent each of said wheels; and a spring friction biased U-shaped braking frame, comprising two sides and a crossarm, the sides of which pass, respectively, through each of said brake supports and engage therewith in a spring friction fit, the crossarm resting on the rearward side of said axle means, the open ends of said sides of said U-shaped braking frame having wheel engaging extensions attached perpendicularly thereto to permit engagement of said wheel engaging extensions with the tread of said oversize wheels so that said cart may be braked by rearward movement of said crossarm and so that said cart may be placed in an intermediate rest position wherein said crossarm rests oN the ground and said extensions engage said tread of said oversize wheels.
Claim 11
Dependent Claim
179 words
A hand propelled cart, comprising: a cart frame; an axle means having a pair of oversize friction wheels coaxially mounted on opposing ends of said axle means; upright handle means attached to said frame; a pair of brake supports terminating in tubular shaped flanges, said brake supports being mounted, respectively, on said frame adjacent each of said wheels; and a spring friction biased U-shaped braking frame, comprising two sides and a crossarm, the sides of which pass, respectively, through each of said brake supports and engage therewith in a spring friction fit, the crossarm resting on the rearward side of said axle means, the open ends of said sides of said U-shaped braking frame having wheel engaging extensions attached perpendicularly thereto to permit engagement of said wheel engaging extensions with the tread of said oversize wheels so that said cart may be braked by rearward movement of said crossarm and so that said cart may be placed in an intermediate rest position wherein said crossarm rests oN the ground and said extensions engage said tread of said oversize wheels.
Claim 12
Dependent Claim
119 words
A hand propelled cart in accordance with claim 9 in which said upright handle comprises a tubular member inserted within a square cross section channel member, said tubular member having a diameter slightly less than the inside dimension of said square cross section channel member, and said tubular member having at least one nub protruding therefrom, said nub being positioned to ride in an open interior corner of said square cross section channel member to prevent said tubular member from rotating within said square cross section channel member, and means for adjusting the height of said upright handle between a collapsed resting height and an extended height at which the handle may be gripped as the cart is moved.
Claim 13
Dependent Claim
84 words
A hand propelled cart in accordance with claim 10 wherein said cart frame includes an inverted U-shaped handle support the ends of which are attached, respectively, to parallel runners at approximately right angles thereto and forwardly of said principal axle, said parallel runners forming the base of said frame, the center of said inverted U-shaped handle support being attached to said square cross section channel member, said square cross section channel member having a passageway at the bottom thereof to accommodate said principal axle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |