Patent US3708778A successfully refreshed from Google Patents.
US3708778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall clamp for electrical cords
Assignee: Individual
•
Filing: 1971-12-16
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Granted: 1973-01-02
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Expires: 1991-12-16
Abstract
Abstract A wall clamp assembly secured to a wall to retain a plug of an electrical appliance cord in a socket of a wall outlet. Cord is retained in a v-shaped opening of a clamping means at an outer end of a hinged arm of the assembly, the v-shaped opening having side walls with serrations or ridges. Load on the cord is sustained by the clamping means, the arm rotating to follow limited movement of the cord.
Inventors
- 👤 E Mckeever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:31
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6395; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3916; Y10T24/3918
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A wall clamp assembly (10) adapted to retain a plug (13,21) of an electrical appliance cord (14,22) in a socket of a wall outlet (11,18), the assembly including: a. means to secure the assembly to the wall, b. a rigid arm (33) having an inner end (38) and an outer end, the inner end being connected to the securing means permitting the arm to swing about the securing means, c. means (20) to clamp the cord at the outer end of the arm, constructed and arranged so that a force tightening the cord is taken up in the arm, with a slack portion of the cord between the arm and the plug so that the force is not transmitted to the plug tending to withdraw it from the socket, the arm swinging to follow limited movement of the appliance when the cord is tight.
Claim 2
Dependent Claim
144 words
A wall clamp assembly (10) adapted to retain a plug (13,21) of an electrical appliance cord (14,22) in a socket of a wall outlet (11,18), the assembly including: a. means to secure the assembly to the wall, b. a rigid arm (33) having an inner end (38) and an outer end, the inner end being connected to the securing means permitting the arm to swing about the securing means, c. means (20) to clamp the cord at the outer end of the arm, constructed and arranged so that a force tightening the cord is taken up in the arm, with a slack portion of the cord between the arm and the plug so that the force is not transmitted to the plug tending to withdraw it from the socket, the arm swinging to follow limited movement of the appliance when the cord is tight.
Claim 3
Dependent Claim
52 words
Structure as defined in claim 1 in which the means to clamp the cord in an arm of the assembly includes i. a v-shaped opening (43,60) having sloping inner side walls (44,45; 64,65), ii. means to retain the cord within the v-shaped opening provided on the side walls of the v-shaped opening.
Claim 4
Dependent Claim
60 words
Structure as defined in claim 2 in which the means to retain the cord within the v-shaped opening provided on the side walls of the v-shaped opening includes a plurality of horizontally disposed serrations (50) having crests (57,58) provided at a pitch on the sloping inner side walls (44,45), the crests on each side wall being opposite to each other.
Claim 5
Dependent Claim
93 words
Structure as defined in claim 2 in which the means to retain the cord within the v-shaped opening provided on the side walls of the v-shaped opening includes a plurality of tapering ridges (63) each ridge having an upper end (69) projecting a distance (74) from the side wall of the v-shaped opening, a lower end (70) flush with the side wall of the v-shaped opening, the ridge having two sloping side walls converging to a crest (73), so that the ridges deform the cord and retain the cord within the v-shaped opening.
Claim 6
Dependent Claim
62 words
Structure as defined in claim 2 in which the means to retain the cord within the v-shaped opening provided on the side walls of the v-shaped opening includes a plurality of tapering ridges (75), each ridge having a flattened crest (77) and projecting a distance from side walls of the v-shaped opening so as to retain the cord within the v-shaped opening.
Claim 7
Dependent Claim
18 words
Structure as defined in claim 4 in which the ridges are staggered along sides of the v-shaped opening.
Claim 8
Dependent Claim
18 words
Structure as defined in claim 5, in which the ridges are staggered along sides of the v-shaped opening.
Claim 9
Dependent Claim
31 words
Structure as defined in claim 1 wherein the inner end of the arm is hinged on a shaft (37) so that the arm is free for limited rotation about the shaft.
Claim 10
Dependent Claim
55 words
Structure as defined in claim 1 in which the means to secure the assembly to the wall includes means to secure the body to the wall selectively with the arm below the socket, above the socket, or on either side of the socket according to direction at which the force tightening the cord is applied.
Claim 11
Dependent Claim
98 words
Structure as defined in claim 1 in which the means (b) to clamp the cord in an arm of the assembly includes iii. two spaced extending walls (84,85) provided at an outer end of the arm, iv. staggered tapered buttresses extending inwards from inner surfaces of the walls, the buttresses having sloping inner edges (91) defining v-shaped openings between the buttresses and portions of inner surfaces of the walls opposite, so that, when a cord is inserted between the side walls and the buttresses, the cord follows a generally sinusoidal path and is gripped in the v-shaped openings.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |