Patent US2180505A successfully refreshed from Google Patents.
Patent US3593050A successfully refreshed from Google Patents.
US3593050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolling motor
Assignee: ELECTRO SYSTEMS Inc MCCRARY ROAD A DE CORP
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Filing: 1969-04-01
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Granted: 1971-07-13
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Expires: 1989-04-01
Abstract
Abstract A trolling motor for operation immersed in water is provided including a watertight motor housing, permanent magnet flux generating means supported by the motor housing and an armature assembly having a shaft rotatably supported by the motor housing, the trolling motor being arranged such that heat generated by operation of the motor is conducted through the motor housing directly to the water.
Inventors
- 👤 James Kittrell Ware
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:02
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/132; B; B63; B63H; B63H20/00; B63H20/007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
181 words
A trolling motor adapted for operation immersed in water comprising: a watertight motor housing including a hollow housing Portion with an open end and an end cap adapted to close and seal the open end of the hollow housing portion; flux generating means supported by the motor housing; an armature assembly having a shaft rotatably supported by the motor housing; and electrical means including a coil of wire providing an electrical resistance supported in the end cap and wound in a tubular form to conform to the shape of a portion of the walls of the end cap, the coil of wire being adjacent and fixed to the portion of the walls of the end cap in good heat transfer relationship therewith, the electrical means further including circuit means for connecting a source of voltage to the armature assembly alternatively directly to the armature or to the armature through the coil of wire, whereby when the coil of wire is connected with the circuit means, heat generated by the coil of wire is dissipated through the motor housing to the water.
Claim 2
Dependent Claim
181 words
A trolling motor adapted for operation immersed in water comprising: a watertight motor housing including a hollow housing Portion with an open end and an end cap adapted to close and seal the open end of the hollow housing portion; flux generating means supported by the motor housing; an armature assembly having a shaft rotatably supported by the motor housing; and electrical means including a coil of wire providing an electrical resistance supported in the end cap and wound in a tubular form to conform to the shape of a portion of the walls of the end cap, the coil of wire being adjacent and fixed to the portion of the walls of the end cap in good heat transfer relationship therewith, the electrical means further including circuit means for connecting a source of voltage to the armature assembly alternatively directly to the armature or to the armature through the coil of wire, whereby when the coil of wire is connected with the circuit means, heat generated by the coil of wire is dissipated through the motor housing to the water.
Claim 3
Dependent Claim
45 words
The trolling motor of claim 1 in which the walls of the end cap form a cylindrical recess, and the coil of wire is positioned in the recess and is cylindrical in form to conform to the shape of the walls of the end cap.
Claim 4
Dependent Claim
38 words
The trolling motor of claim 1 in which the coil of wire conforms to the shape of at least two opposed portions of the walls of the end cap and is fixed to the portions of the walls.
Claim 5
Dependent Claim
31 words
The trolling motor of claim 1 in which the walls of the end cap form a recess in the end cap, and the coil of wire is positioned in the recess.
Claim 6
Dependent Claim
64 words
The trolling motor of claim 1 in which the coil of wire has a connection terminal between its ends, the circuit means connecting the source of voltage alternatively directly to the armature, to the armature through the coil of wire or to the armature through a portion of the coil of wire from the connection terminal, whereby three speeds of motor operation are provided.
Claim 7
Dependent Claim
60 words
The trolling motor of claim 1 in which the coil of wire provides a wire wound resistor supported in and conforming to the shape of the walls of the end cap, and the electrical means further including commutator means supported by the armature and at least two brushes supported by the end cap and arranged to contact the commutator means.
References Cited (Backward Citations)
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US2116146A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |