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Патент USA US3071296

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Jan. 1, 1963
Filed July 13. 1960
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United States Patent 01 :ice
Patented Jan. 1, 1963
mechanism of the invention indicated generally by the
numeral 14 having an elongated, rather thin metallic main
Ralph A. Valvano, 602 S.'Quaker, Tulsa, Okla.
body portion 16 supporting a ?xed punch element indi
Filed July 13, 1960, Ser. No. 42,721
punch element indicated generally by the numeral 20 at
cated generally by numeral 18 at one end and a movable
3 Claims. (Cl. 220-51)
the opposite end. The punch elements 18 and 20 are ar
ranged so that ?xed punch 18 and movable punch 20 will
be positioned near the periphery of the top of can 12 and
This invention relates to improvements in can opener
and sealer devices; more particularly, the invention relates
substantially on a diameter of the top of can 12.
to improvements in the punch means of a can opener and
sealer wherein the device is more easily removed from the 10
can to which it is attached.
The can opener and sealer 14 is used to provide appro
priate openings in can 12 by placing it ?rst across the top
of can 12. A sharp blow, as with the heel of the hand,
is then struck on movable punch knob 22 driving movable
punch element 20 into the top of the can 12. Next a blow
195 8, having Serial Number 768,489‘.
is struck, again as by the heel of the hand, on the ?xed
An object of this invention is to provide improvements
punch portion 18. This forms two holes in can 12. The
in means for puncturing and sealing metal containers.
hole formed by the movable punch element 20‘ serves two
Another object of this invention is to provide a device
First, it provides means whereby air may enter
for puncturing a ?uid outlet and vent opening in a can and
- can 12 as the liquid contents are emptied. Second, it pro
having means for sealing the can after the openings are
20 vides a means whereby the can opener and sealer 14 is re
tained in position on top of the can 12. The hole formed
Another object of this invention is to provide a punch
This application is a continuation-in-part of an applica
tion entitled “Can Opener and Sealer” ?led October 20,
by ?xed punch portion 18 is utilized for discharging the
blade having a tapered shoulder portion whereby said
blade is easily aligned with the elongated hole punched by
the blade in the can facilitating removal of the can opener
and sealer.
contents of the can 12.
Referring to FIGURE 3 the details of construction and
25 assembly of the elements of the invention are more clearly
disclosed. An inwardly formed angular lip portion 24
extends substantially perpendicularly to body portion 16,
Another object of this invention is to provide an im
proved gasket means whereby the possibility of- leakage of
and is disposed to engage the upper vertical edge 26 of
can 12. A ?xed punch 28 is permanently secured to body
portion 16, as by welding, brazing or bradding. Fixed
punch 28 has a slanting cutting surface 30 adaptable for
?uid past the punching mechanism of the can opener and
sealer is lessened.
Another object of this invention is to provide a can
opener and sealer which is of more simple construction,
more dependable in its function, and more inexpensively
piercing can 12 when pressure or a blow is applied to the
upper surface of body portion 16 in the vicinity of ?xed
manufactured than other can opener and sealer means
punch portion 18. Surrounding ?xed punch portion 18 is
presently available.
These and other objects and a better understanding of 35 a gasket element 32 composed of sponge rubber or some
similar resilient matter which, when compressed around
?xed punch element 28, serves to seal can 12, preventing
the escape of any liquid contained therein in the event
the can is inadvertently overturned. After ?xed punch 28
FIGURE 1 is a side view of a typical metal container or
has been forced through the top of can 12, forming a hole
can with the apparatus of this invention af?xed thereto
therein, it can be subsequently removed by applying man
as it would be situated after the can has been punched and
ual pressure to lip portion 24 in an upward direction, rais
while it is being sealed by the mechanism of this invention.
ing ?xed punch 28 from engagement with the hole in the
FIGURE 2 is a top view of a metal can having the
can 12 and permitting liquid to be discharged through the
mechanism of this invention positioned thereon.
the invention may be had by referring to the following
description and claims taken in conjunction with the at
tached drawings in which:
FIGURE 3 is a cross sectional view taken along the line
3-3 of FIGURE 2 showing in greater detail the com
Movable punch assembly 20 is composed of a wedge
shaped punch 34 integrally ai?xed to a stem 36, a knob
22 secured to stem 36, a compression coiled spring 40
ponents constituting the assembled mechanism.
FIGURE 4 is a fragmentary side view showing the top
?tted in compression between knob 38 and body portion
portion of a metal can with the mechanism of this inven 50 16, a washer member 42 which serves to align and slide
tion attached but with the punch removed from the pour
ably support stem 36 and a gasket element 44 supported
ing hole and the opener tilted by hand pressure in an atti
by washer member 42.
tude wherein fluid contained within the can may be
Stem 26 extends through an elongated slot 46 (best
FIGURE 5 is a side view of the wedge shaped punch 55
element of the invention.
FIGURE 6 is an end view of the wedge shaped punch
element of the invention.
FIGURE 7 is a top view of the aligning washer of this
shown in FIGURE 2) in body member 36 in a manner
such that the movablepunch element 28 may be slid back
and forth along the length of body element 16 to adjust
for various sizes of can 12 to which the can opener and
sealer 14 is to be applied. The compressive tension of
spring 48 will serve to maintain movable punch 20 in the
60 position desired while it is being used until its position
FIGURE 8 is a side view of the aligning washer of this
relative to body portion 16 has been manually altered.
Wedge shaped punch 34 is shown in greater detail in
FIGURE 9 is a top view of a sealing gasket used to seal
FIGURE 5 and FIGURE 6. The wedge shaped punch
the wedge shaped punch to preventv leakage.
34 is formed ‘with a pointed end 48 to adapt it for ex
FIGURE 10 is a cross sectional view taken along line
through the upper surface of can 12. Shoulder
10-10 of FIGURE 9 showing the con?guration of the 65 tending
surfaces 59, extending substantially vertically to the axis
sealing gasket.
of stem 36, serve to maintain the Wedge shaped punch
Referring now to the drawings, ?rst to FIGURE 1 and
34 within can 12 by bearing against the inside surfaces
FIGURE 2, a typical metal container or can is indicated
by the numeral 12. ‘This is a can of the nature in which
condensed milk, fruit juices, and other products are cus
tomarilypackaged for ‘marketing to the general public.
Positioned on top of can 12 is the can puncher and sealer
of can 12 after the wedge shaped punch 34 enters the can
70 and is rotated approximately 90° by manually turning
. knob 38.
Washer member 42 shown in detail in ‘FIGURE 7 and
FIGURE 8 is composed of a relatively thin ?at upper
portion 52, a relatively thin ?at and smaller diameter por
tion 54 supported substantially parallel to the upper por
tion 52 and a tubular connecting portion 56. The upper
portion 52, lower portion 54 and tubular connecting por
tion 56 are integrally formed into a single element. Tubu
that the wedge shaped punch 34, after entering the top
of the can 12, is di?icult to remove because the operator
is never aware of when it is accurately aligned with the
rectangular shaped opening for removal. By providing
the tapered sshoulder surfaces 50 on wedge shaped mem
ber 34, the wedge shaped punch 34 is guided into the
lar opening 58 has an internal diameter of a size to
rectangular shaped slot it has formed in the top of can 12
when it is properly aligned. As knob 38 is turned a de
snugly but slideably receive stem 36 of wedge shaped
punch 34.
cided click will be heard and felt by the operator when
Washer member 42 is of con?guration to receive gasket 10 alignment of punch 34 is achieved with the opening it
element 44. Gasket element 44 has a cylindrical re
has formed. This eliminates the exasperating dii?culties
cessed area 60 adaptable for receiving lower portion 54
encountered in other mechanisms of this type wherein re
of washer member 42. A portion of washer member 44
moving the wedge shaped punch is dit?cult.
extends beyond lower portion 54 of washer element 42 to
Another advantage of the present embodiment of the
engage the upper surface of can 12.
invention is the provision against leakage around the
The method of using the can opener and sealer 14, and
wedge shaped punch 34. The provision of circular stem
the function of the various elements is best disclosed in
36 snugly but slidably engaging hole 58 in washer mem
FIGURE 4. The can opener and sealer 14 is ?rst posi
ber 42 prevents any ?uid leakage. The tubular opening
tioned on top of can 12. A blow is struck with the heel
58 also provides an aligning means whereby stem 38 is
of the hand on top of knob 22 driving wedge shaped
accurately supported in relation to the body member 16.
punch 34 into the top of the can. After entering the top
The con?guration of gasket element 44, supported in
of can 12, knob 22 is manually forced downward, com
washer member 42, provides improved sealing against
pressing spring 40. Knob 33 is then rotated approxi
possible leakage of the liquid contained in can 12 and
mately 90° from wedge shaped punch 34 to be rotated
also permits greater air flow into the can when it is being
in either direction from the position in which it entered 25 emptied of its contents.
the top of can 12. With the wedge shaped punch 34 thus
Although this invention has been described with a cer
rotated and knob 22 released upper shoulder surfaces 50
tain degree of particularity it manifests that many changes
encounter the top of the can, retaining wedge shaped
may be made to details of construction and the arrange
punch 34 within the can. This exerts a downward pres
ment of components without departing from the spirit and
sure, by the compression of spring 40, onto body portion
scope of this disclosure.
16 and thereby to the upper portion 52 of washer member
I claim:
42, compressing gasket member 44 against the top of can
1. A device adaptable for opening and sealing a can
12. This prevents liquid ‘from leaking around wedge
comprising; an elongated longitudinally slotted substan
shaped punch 34. The close ?t between the stem por
tially in?exible body adapted to be placed diametrically
tion 36 of wedge shaped member 34 and hole 58 in ' across one end of said can; a ?rst punch member affixed
washer member 42 prevents any liquid leakage at this
to said body adjacent one end of said body adaptable for
punching a ?rst hole in said can whereby contents of said
can may be discharged; a wedge shaped second punch
Lip portion 24 is aligned with edge 26 of can 12
diametrically opposite the point where wedge shaped
member adaptable for punching a rectangular shaped
punch 34 is driven into the can. A blow is then struck 40 second hole in said can, said second punch member hav
on ?xed punch portion 18 driving ?xed punch 28 into the
top of can 12. When it is desired to remove liquid from
ing an integrally formed cylindrical shank extending
therefrom, the upper surfaces of said wedge shaped second
punch member being of a tapered con?guration; means
the interior of can 12 punch 28 is removed from the en
gagement with the hole it has formed in the upper sur
face of can 12 by manually exerting pressure, as with the
of slideably and resiliently supporting said second punch
member to said body wherein said shank extends through
said longitudinal slot in said body; a knob a?’ixed to said
‘thumb, on lip portion 24, lifting punch 28 out of the hole
and then sliding body portion 16 back toward movable
shank adaptable for driving said second punch member
punch 20-. Air can be admitted into the hole punched
through said can and for rotatably positioning said second
punch member whereby the upper surfaces of said wedge
shaped punch member are disposed to engage the inner
by wedge shaped punch 34 by pressing on the rearward
‘portion of body member 16, as with the thumb 62, com
‘pressing one side of gasket element 44, and permitting
surface of said can after said second punch has entered
said can to support said device to said can and whereby
air to flow under the elevated opposite side into can 12.
After suf?cient liquid has been removed from can 12
punch 28 can be reinserted into the hole previously
formed, so that‘gasket member 32 seals the hole. In
this manner can 12 can be opened and resealed as many
times as is required.
When the can 12 has been emptied of its contents the
can opener and sealer 14 may be removed from the can
as follows: First, punch 28 is removed from the hole (3G
formed by it by exerting upward pressure on lip portion
24. Next, knob 38 is turned, rotating wedge shaped
said second punch member may be rotated to align said
tapered upper surfaces with the said second hole formed
by said second punch member for releasing said device
from said can; a spring disposed around said shank and
compressed between said body and said knob resiliently
biasing said second punch towards said body; and ?exible
sealing pad means carried by said body adaptable to
cover said ?rst and second holes formed by said ?rst and
second punch members whereby said ?rst punch member
may be disengaged from contact with said can for the
discharge of liquid from said can and whereby said body
punch 34, until a click is heard. This click sound indi
'cates that wedge shaped punch 34 has aligned with the
may be manually tilted with reference to said second
rectangular hole it has formed in the top of can 12 and 65 punch member to partially uncover said second hole
1's in a position to be removed. Upward pull on knob 38
formed in said can by said second punch member to per
removes wedge shaped punch 34 from Within the can 12.
mit said can to receive air while liquid is being discharged
'The can opener and sealer 14 is then ready for reuse on
:another can.
The advantages and improvements of the wedge shaped 70 2. A device according to claim 1 wherein said shank
portion of said second punch member includes undercut
punch 34, as used in conjunction with washer member 42
notches substantially conforming with said tapered con
and gasket element 44, are numerous and may not be
?gurations of the upper surfaces of said wedge shaped
readily apparent from a casual observation of the con—
struction of these elements. One disadvantage which
exists in previously known can ‘punchers and sealers is
punch whereby said wedge shaped punch more readily
‘falls into said rectangular second hole as said second
punch member is rotated by said knob for releasing said
device from said can.
3. A device according to claim 1 wherein said means of
‘slideably and resiliently supporting said second punch
member to said body includes a washer member, said
washer member having a larger and a smaller circular
adaptable to cover said second hole formed by said
second punch member includes a resilient gasket posi
tioned around said tubular portion and between said
larger and smaller ?ange portions, said gasket having a
recessed portion receiving said smaller ?ange whereby
said gasket extends beyond said smaller ?ange to resil
iently engage the outer surface of said can around said
?ange portion positioned with respect to each other in
rectangular second hole formed in said can by said second
parallel planes and supported to each other by an inte
punch member.
grally formed tubular portion snugly but slideably re
ceiving said shank of said second punch member, one por 10
References Cited in the ?le of this patent
tion of said larger ?ange member engaging said body
whereby said shank of said second punch member is sup
Laney et a1. __________ .. Dec. 30, 1913
ported substantially perpendicularly to said body, and
whereby said contents of said can is prevented from
leaking at said second punch member by said snug ?t of
said shank with said opening of said'tubular portion, and
wherein said sealing pad means carried by said body
McCrystle ____________ __ July 6,
Tweeddale ____________ __ June 19,
Wickers _____________ __ Aug. 12,
Dilley ______________ -_ Dec. 17,
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