US3689735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrink device for wearable products made of heat shrinkable film
Assignee: Individual
•
Filing: 1969-12-03
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Granted: 1972-09-05
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Expires: 1989-12-03
Abstract
Abstract A shrink device having a casing with an opening for receiving a foot or other body part and a receptacle within the casing for holding the foot in position with electrical means for applying heat to an overshoe or other article made of heat shrinkable film for shrinking thereof onto the shoe of the wearer or a foot or other body part placed within the receptacle.
Inventors
- 👤 David P Mcleod
- 👤 Allen L Lutz
- 👤 John J Dragone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/38; A; A43; A43B; A43B3/00; A43B3/16; A43B3/163; B29C35/00; B29C35/02; B29C35/08; B29C63/0065; B29C35/0805; B29C2035/0822
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
A device for heat shrinking a disposable overshoe onto the shoe of the wearer comprising, a casing with a foot receiving opening, a receptacle within the casing adapted to receive the shoe of the wearer and electrical means including radiant heat elements for applying heat to the unshrunk overshoe to shrink the same onto the shoe of the wearer, said receptacle being yieldably mounted for movement in response to placement of a foot therein and further including a switch in circuit with said electrical means and responsive to movement of said yieldable receptacle to energize said radiant heat elements when a foot is placed therein.
Claim 2
Independent Claim
105 words
A device for heat shrinking a disposable overshoe onto the shoe of the wearer comprising, a casing with a foot receiving opening, a receptacle within the casing adapted to receive the shoe of the wearer and electrical means including radiant heat elements for applying heat to the unshrunk overshoe to shrink the same onto the shoe of the wearer, said receptacle being yieldably mounted for movement in response to placement of a foot therein and further including a switch in circuit with said electrical means and responsive to movement of said yieldable receptacle to energize said radiant heat elements when a foot is placed therein.
Claim 3
Dependent Claim
41 words
A shrink device as defined in claim 1 wherein said receptacle has an open top with sides and a bottom of materials to prevent physical access to said radiant heating elements within the casing while minimizing the effect of wave transmission.
Claim 4
Dependent Claim
48 words
A shrink device as defined in claim 1 wherein said electrical means includes a power circuit, a first switch in said circuit responsive to the presence of a foot in said receptacle, and a second dispenser operated switch for conditioning said circuit for operation upon dispensing of overshoes.
Claim 5
Dependent Claim
15 words
A shrink device as defined in claim 1 wherein said overshoes are disposable bowling shoes.
Claim 6
Dependent Claim
104 words
A shrink device for shrinking heat shrinkable overshoes or the like onto the feet of a wearer comprising, a casing having a foot-receiving opening, means within the casing to locate a shoe in position, a plurality of radiant heat elements in said casing and reflectors associated therewith to direct radiant heat toward the bottom and the sides of a shoe, and circuit means for controlling operation of said radiant heat elements, said casing and said shoe-locating means together comprising a receptacle open only to the outside so as to prevent physical access to the interior of the casing and the radiant heating elements therein.
Claim 7
Dependent Claim
104 words
A shrink device for shrinking heat shrinkable overshoes or the like onto the feet of a wearer comprising, a casing having a foot-receiving opening, means within the casing to locate a shoe in position, a plurality of radiant heat elements in said casing and reflectors associated therewith to direct radiant heat toward the bottom and the sides of a shoe, and circuit means for controlling operation of said radiant heat elements, said casing and said shoe-locating means together comprising a receptacle open only to the outside so as to prevent physical access to the interior of the casing and the radiant heating elements therein.
Claim 8
Dependent Claim
48 words
A shrink device as defined in claim 5 wherein said receptacle is mounted for depressing movement by a foot, a circuit for controlling energization of said radiant heat elements and a switch in said circuit and in series with said elements and closable upon depression of said receptacle.
Claim 9
Dependent Claim
28 words
A shrink device as defined in claim 6 including a temperature responsive switch in series in said circuit for opening the circuit when a set temperature is exceeded.
Claim 10
Dependent Claim
124 words
A shrink device for heat shrinking a disposable overshoe or the like of heat shrink film onto the shoe of a wearer comprising, a casing with a top opening, a receptacle within said casing underlying said opening for receiving a shoe and holding thereof in position for a heat shrink cycle, an electrical circuit including at least three quartz lamps in parallel, said lamps being positioned under and to the sides of said receptacle and extending for substantially the entire length thereof, reflectors associated with said lamps for directing the radiant heat waves toward the receptacle, foot operated switch means for closing said circuit, and temperature responsive switch means in said circuit for opening thereof when a set temperature of the receptacle is exceeded.
Claim 11
Dependent Claim
124 words
A shrink device for heat shrinking a disposable overshoe or the like of heat shrink film onto the shoe of a wearer comprising, a casing with a top opening, a receptacle within said casing underlying said opening for receiving a shoe and holding thereof in position for a heat shrink cycle, an electrical circuit including at least three quartz lamps in parallel, said lamps being positioned under and to the sides of said receptacle and extending for substantially the entire length thereof, reflectors associated with said lamps for directing the radiant heat waves toward the receptacle, foot operated switch means for closing said circuit, and temperature responsive switch means in said circuit for opening thereof when a set temperature of the receptacle is exceeded.
Claim 12
Dependent Claim
23 words
A shrink device as defined in claim 8 including a timer in said circuit for limiting the time of a heat shrink cycle.
Claim 13
Dependent Claim
21 words
A shrink device as defined in claim 8 including timer operated means for supplying a reduced voltage initially to said circuit.
Claim 14
Dependent Claim
16 words
A shrink device of claim 8 wherein a dispenser operated switch pre-conditions said circuit for operation.
References Cited (Backward Citations)
FR877023A
Cited
GB678377A
Cited
US2668364A
Cited
US2779856A
Cited
US3244859A
Cited
US3315064A
Cited
US3476913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |