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US3818238A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety apparatus

Assignee: Individual
•
Filing: 1972-09-05
•
Granted: 1974-06-18
•
Expires: 1992-09-05
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Abstract

Abstract Safety apparatus intended to safeguard the operation of a machine and to discourage overloading of an electric motor powering the machine. The machine is one which requires the operator to wear an eye or face protector and incorporated in the protector is switch means connected by an electric circuit to the machine motor. Only when the protector is in normal position of use will the machine operate or the work be properly illuminated by a floodlight also forming part of the circuit. A heat sensitive switch in the circuit aids in preventing the operator from overloading the machine motor.

Inventors

  • 👤 G Lemire

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 03:38
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/003; Y; Y10; Y10S; Y10S200/00; Y10S200/02

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 94 words
Safety apparatus for machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means mounted on the protector and connected by the electric circuit to the electric motor, said safety switch means having a pressure actuated contact which is closed to connect the electric motor to the power source normally only when the protector is in proper position of use upon the head of the machine operator.
Claim 2
Dependent Claim 94 words
Safety apparatus for machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means mounted on the protector and connected by the electric circuit to the electric motor, said safety switch means having a pressure actuated contact which is closed to connect the electric motor to the power source normally only when the protector is in proper position of use upon the head of the machine operator.
Claim 3
Dependent Claim 138 words
Safety apparatus for a machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means associated with the protector and included in the electric circuit, said safety switch means having a pressure actuated contact adapted to close and connect the electric motor to the power source when the protector is in proper position of use upon the head of the machine operator, and means for illuminating the work being performed on the machine by the operator, said illuminating means being included in the electric circuit, and light-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when the illuminating means is not operating properly.
Claim 4
Dependent Claim 138 words
Safety apparatus for a machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means associated with the protector and included in the electric circuit, said safety switch means having a pressure actuated contact adapted to close and connect the electric motor to the power source when the protector is in proper position of use upon the head of the machine operator, and means for illuminating the work being performed on the machine by the operator, said illuminating means being included in the electric circuit, and light-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when the illuminating means is not operating properly.
Claim 5
Dependent Claim 42 words
Safety apparatus as claimed in claim 2, and including mounting means for the goggles and the illuminating means, said mounting means comprising a bracket having a vertical leg attachable to a wall near the machine and a horizontal leg overhanging said machine.
Claim 6
Dependent Claim 26 words
Safety apparatus as claimed in claim 3, in which said horizontal leg is longitudinally extensible and swingable about a vertical pivot located near the vertical leg.
Claim 7
Dependent Claim 35 words
Safety apparatus as claimed in claim 2 and including heat-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when said electric motor is subjected to an overload.
Claim 8
Dependent Claim 30 words
Safety apparatus as claimed in claim 2, and including a first signalling device in the electric circuit adapted to warn the machine operator of a defect in the illuminating means.
Claim 9
Dependent Claim 25 words
Safety apparatus as claimed in claim 6, and including a second signalling device in the electric circuit adapted to signal the existance of an overload.
Claim 10
Dependent Claim 42 words
Safety apparatus as claimed in claim 2, in which said safety switch means comprises two additional pressure actuated contacts spaced from the first mentioned pressure actuated contact as well as from one another with all of said contacts being connected in series.
Claim 11
Dependent Claim 201 words
Safety apparatus for a machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means associated with the protector and included in the electric circuit, said safety switch means having a pressure actuated contact adapted to close and connect the electric motor to the power source when the protector is in proper position of use upon the head of the machine operator, means for illuminating the work being performed on the machine by the operator, said illuminating means being included in the electric circuit, and light-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when the illuminating means is not operating properly, heat-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when said electric motor is subjected to an overload, a first signalling device in the electric circuit adapted to warn the machine operator of a defect in the illuminating means, and a second signalling device in the electric circuit adapted to signal the existance of an overload.
Claim 12
Dependent Claim 201 words
Safety apparatus for a machine powered by an electric motor comprising an electric circuit connecting the electric motor to a source of electric power, a protector adapted to be worn over the face of an operator of the machine, safety switch means associated with the protector and included in the electric circuit, said safety switch means having a pressure actuated contact adapted to close and connect the electric motor to the power source when the protector is in proper position of use upon the head of the machine operator, means for illuminating the work being performed on the machine by the operator, said illuminating means being included in the electric circuit, and light-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when the illuminating means is not operating properly, heat-sensitive switch means in the electric circuit adapted to disconnect the electric motor from the power source when said electric motor is subjected to an overload, a first signalling device in the electric circuit adapted to warn the machine operator of a defect in the illuminating means, and a second signalling device in the electric circuit adapted to signal the existance of an overload.
Claim 13
Dependent Claim 42 words
Safety apparatus as claimed in claim 9, and including mounting means for the goggles and the illuminating means, said mounting means comprising a bracket having a vertical leg attachable to a wall near the machine and a horizontal leg overhanging said machine.

References Cited (Backward Citations)

US2800543A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-17 1977-12-17 1978-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-17 1981-12-17 1982-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-17 1985-12-17 1986-06-18 $7700.00 Window Closed / Lapsed

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