Patent US3635301A successfully refreshed from Google Patents.
US3635301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically powered vehicles
Assignee: HARLEQUIN Mfg Ltd
•
Filing: 1969-10-20
•
Granted: 1972-01-18
•
Expires: 1989-10-20
Abstract
Abstract The invention relates to a three-wheeled electric golf trolley, two rear wheels of which are driven via separate free wheel mechanisms by a battery-powered electric motor. The single front wheel is steerable by a handle intended to be grasped by a pedestrian, the inclination of the handle being adjustable, and being employed to control the operation of the motor.
Inventors
- 👤 Ian V Tuson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:03
CPC Classifications
B; B60; B60K; B60K1/00; B62; B62B; B62B3/00; B62B3/001; B62B3/12; B62B5/00; B62B5/0026; B62B2202/00; B62B2202/40; B62B2202/404; B62B2301/00; B62B2301/04; B62B5/0033; B62B5/0036; B62B5/0046; B62B5/04; B62B5/0485; Y; Y10; Y10S; Y10S280/00; Y10S280/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
398 words
An electric golf trolley including a chassis, an electric drive motor powered by a source of electrical energy carried by the chassis, first and second road wheels rotatably attached to the chassis, a drive arrangement connecting the motor to the first and second road wheels, said drive arrangement including first and second free wheel mechanisms, the motor being connected to the first road wheel via the first free wheel mechanism, and to the second road wheel via the second free wheel mechanism a third road wheel comprising the front wheel of the trolley rotatably attached to the chassis and arranged for angular displacement relative thereto about a generally vertical axis to steer the trolley, and control means comprises a handle, intended to be grasped by a pedestrian, mounted for displacement about said generally vertical axis to steer the front wheel, and also mounted for inclination about a generally horizontal axis, the trolley including a motor control unit connected to the handle and adapted to control the operation of the motor in dependence upon the inclination of the handle, the handle being normally spring-biassed towards the first position in which the motor is deengergized by the control unit, the control unit being actuated by the handle to energize the motor upon inclination of the handle from said first position in a direction downwardly and forwardly of the trolley, the chassis of the trolley including a main frame which comprises a generally flat rectangular framework including front and rear crossmembers interconnected by side members, and a tubular intermediate crossmember within which is journaled a rotatable axle carrying the rear wheels, the chassis further including a subframe which comprises a generally flat triangular framework including side members and a base crossmember, the subframe being journaled, intermediate its base crossmember and its apex, to the front crossmember, and carrying, adjacent the apex thereof, a front wheel carrier, journaled about a generally vertical axis, to which the front wheel is rotatable connected, at least one golf bag support being carried by the chassis, the subframe and said at least one golf bag support being hingedly connected to the main frame for movement between unfolded, operative positions in which said subframe and support are extended with respect to the main frame, and folded, inoperative positions in which they are retracted with respect to the main frame to reduce the overall dimensions of the trolley.
Claim 2
Dependent Claim
398 words
An electric golf trolley including a chassis, an electric drive motor powered by a source of electrical energy carried by the chassis, first and second road wheels rotatably attached to the chassis, a drive arrangement connecting the motor to the first and second road wheels, said drive arrangement including first and second free wheel mechanisms, the motor being connected to the first road wheel via the first free wheel mechanism, and to the second road wheel via the second free wheel mechanism a third road wheel comprising the front wheel of the trolley rotatably attached to the chassis and arranged for angular displacement relative thereto about a generally vertical axis to steer the trolley, and control means comprises a handle, intended to be grasped by a pedestrian, mounted for displacement about said generally vertical axis to steer the front wheel, and also mounted for inclination about a generally horizontal axis, the trolley including a motor control unit connected to the handle and adapted to control the operation of the motor in dependence upon the inclination of the handle, the handle being normally spring-biassed towards the first position in which the motor is deengergized by the control unit, the control unit being actuated by the handle to energize the motor upon inclination of the handle from said first position in a direction downwardly and forwardly of the trolley, the chassis of the trolley including a main frame which comprises a generally flat rectangular framework including front and rear crossmembers interconnected by side members, and a tubular intermediate crossmember within which is journaled a rotatable axle carrying the rear wheels, the chassis further including a subframe which comprises a generally flat triangular framework including side members and a base crossmember, the subframe being journaled, intermediate its base crossmember and its apex, to the front crossmember, and carrying, adjacent the apex thereof, a front wheel carrier, journaled about a generally vertical axis, to which the front wheel is rotatable connected, at least one golf bag support being carried by the chassis, the subframe and said at least one golf bag support being hingedly connected to the main frame for movement between unfolded, operative positions in which said subframe and support are extended with respect to the main frame, and folded, inoperative positions in which they are retracted with respect to the main frame to reduce the overall dimensions of the trolley.
Claim 3
Dependent Claim
124 words
A trolley as claimed in claim 1, wherein a first golf bag support is journaled to the base crossmember of the subframe and a second golf bag support is journaled to the rear crossmember, the base crossmember and the supports being provided with extensions arranged to abut the main frame in the unfolded, operative positions of the subframe and said supports, and, latch means being provided which, in said operative positions, cause said first support to cooperate with the main frame to positively retain the subframe in said position, wherein the hinge connections between at least some of the components comprising the main frame, subframe and supports are so arranged that said components, when the trolley is loaded, are urged into their operative positions.
Claim 4
Dependent Claim
63 words
A trolley as claimed in claim 2, wherein at least some of the hinge connections comprise friction bearings, each including an axially split bush formed of resilient synthetic plastics material, rotatable relative to one component and secured to another component by a clamping member which is adjustable to compress the split bush to vary its resistance to rotation relative to said one component.
Claim 5
Dependent Claim
92 words
A trolley as claimed in claim 1, wherein the handle is journaled to tHe wheel carrier for inclination about said generally horizontal axis, and the control unit is carried by the handle, the control unit including a first switch operable to energize and deenergize the motor, and a second switch operable to connect the motor, when energized by said first switch, to selected voltage tappings of the source, the switches being actuated by a reciprocable pushrod slidably mounted in the control unit and connected to the wheel carrier by a pivoted link.
References Cited (Backward Citations)
US2792718A
Cited
US2706008A
Cited
US2918134A
Cited
US2973048A
Cited
US3190676A
Cited
US3254734A
Cited
US3249171A
Cited
US3388759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |