1. Claims 1, 2, 3,4, 5, 6, 8, and 10 of Gullborg Patent No.
1,307,734, for a means of lubricating metal bearings, particularly
those of automobiles, claimed a combination of (1) a type of pin
fitting; (2) a grease gun; (3) a connecting hose, and (4) a type of
coupler. The only novel feature of the combination was in the
construction of the coupler, which, utilizing a perforated sealing
disk mounted to reciprocate in the bore of the coupler with means
for yieldingly pressing the disk against the end of the pin
fitting, operates upon uncoupling to produce a suction effect which
removes excess lubricant from the point of contact of the two
members.
Held, to that extent, the claims disclose novelty
and invention. P.
298 U. S.
420.
2. The finding of the Circuit Court of Appeals that the accused
grease gun of respondent (in No. 23) lacked the only novel feature
of the Gullborg patented combination, and that it therefore did not
infringe, sustained. P.
298 U. S.
422.
3. Claims 14 and 15 of Gullborg Patent, No. 1,307,734, for a
combination of the type of pin fitting covered by Gullborg Patent,
No. 1,307,733, with a grease gun of any type,
held not
contributorily infringed either (1) by the sale of pin fittings of
a type not covered by Patent No. 1,307,733, even though a grease
gun of the "suction effect" type could be used therewith, or (2) by
the sale of grease guns which could be used with the patented pin
fitting but which did not embody the improved coupler evidenced by
the patent in suit. Pp.
298 U. S.
424-425.
4. A patentee cannot, by improving one element of an old
combination whose construction and operation is otherwise
unchanged, in effect repatent the old combination by reclaiming it
with the improved element substituted for the old element. P.
298 U. S.
425.
73 F.2d 543 affirmed.
74 F.2d 1019 reversed.
Page 298 U. S. 416
Certiorari, 295 U.S. 726, to review judgments in two cases from
different circuits, involving questions of the validity and
infringement of a patent. The cases are stated in the opinion.
MR. JUSTICE ROBERTS delivered the opinion of the Court.
In these cases, writs of certiorari were granted to resolve
conflicts with respect to the scope and alleged infringement of
claims 1 to 6, 8, 10, 14, and 15 of the Gullborg patent, No.
1,307,734. In No. 23 the Circuit Court of Appeals, while holding
the claims valid, so construed them as to exculpate the accused
devices from the charge of contributory infringement. [
Footnote 1] In No. 31, the Circuit
Court of Appeals gave the claims a broader construction and
adjudged that the petitioners were guilty of contributory
infringement. [
Footnote 2]
The subject of the patent is a device for lubricating metal
bearings, particularly those of automobiles. It has occasioned much
litigation. [
Footnote 3] Before
the date of Gullborg's
Page 298 U. S. 417
invention grease cups were used for bearing lubrication. The cup
was connected with the bearing by a tube, and oil or grease was
forced through the tube into the bearing by screwing down a cap or
plunger which was part of the cup. It became common to substitute,
in place of the grease cup a tubular fitting, and to force grease
through the fitting by means of a "gun" consisting of a compression
chamber and an attached hose, the latter coupled to the fitting by
a screw thread or bayonet coupling. In the case of the bayonet
coupler, the fitting had lugs or pins, and the coupler device had
slots which engaged such lugs or pins to form a tight union. The
grease would then be forced from the chamber of the gun into the
bearing by the use of a plunger or pump. In some of the prior art
appliances, the aperture of the fitting was kept closed when
greasing was not being done by a ball or capsule held against the
opening of the fitting by a spring. This closure is opened, during
the greasing operation, by the pressure of the grease. Gullborg
conceived the idea of a fitting in which, instead of pins or lugs
set on either side, there should be a pin running directly through
the tube and extending out on either side. He used that portion of
the pin which bisected the tube as the base of a spring to hold in
place a metal ball which closed the aperture of the fitting. This
invention was novel in the respect that, while others
Page 298 U. S. 418
had similarly closed the aperture of the fitting, none had
employed the pin both to form the lugs for engaging the slots of
the coupler and to form the base of the spring supporting the ball
closure. For this invention, he applied for and obtained a patent,
No. 1,307,733, which is not here in suit. Recognizing that, when a
bayonet coupler is secured to the pin fitting and the grease is
forced through the fitting into the bearing under great pressure,
upon uncoupling the gun from the fitting, some grease will remain
around the end of the fitting and the orifice of the coupler which
is not only useless but likely to soil the clothing of the operator
or others using the machine and litter the place where the greasing
is done, Gullborg set about to devise a means for eliminating this
residuum of grease. He conceived the idea of placing a movable
perforated cup-shaped disk or washer in the barrel of the coupler
held by a spring against the orifice of the coupler. The intended
operation of his device was that, when the coupler had been
fastened over the pin fitting, the spring should press the washer
against the ball in the pin fitting so that the tube in the fitting
would be open to receive the grease and, upon application of
pressure to the grease, the washer would thereby be firmly pressed
against the opening of the pin fitting, thus causing a tight union
and preventing exudation of grease. His specification asserts that
the invention makes possible the injection of grease under very
high pressure. The design of the bayonet slots is such that, in
uncoupling, the coupling member of the gun will at first be moved
slightly forward on the pin fitting, thus backing up the perforated
washer in the bore of the coupler. As the two parts are then drawn
apart by the retraction of the coupler, the cup-shaped washer will
be forced forward by the spring. This will cause a vacuum behind
the washer and the air rushing in through the
Page 298 U. S. 419
perforation in the washer will draw with it any grease which
would otherwise adhere about the orifices of the fitting and the
coupling.
While Gullborg's invention was confined to an improvement in the
hose coupler, which is but one element in the old and well
understood combination of a compression chamber or pump, a hose, a
hose-coupler, and a grease cup or fitting connected to the bearing
to be lubricated, his claims are not for the improvement as such,
but all are for a combination of the old elements with the improved
form of coupler. They are too long to set forth in full. Claim 2
may be taken as typical of a number of them. It reads:
"2. The combination with a hollow coupling member having a pin
projecting from one side thereof and a spring-pressed closure, of a
pump, a discharge conduit having one end secured to the outlet of
said pump, a second hollow coupling member for receiving the closed
end of said first named coupling member secured to the other end of
said conduit and provided with a bayonet slot adapted to co-act
with said pin, a perforated sealing disk mounted to reciprocate in
the bore of said coupling member, means for yieldingly urging said
sealing disk against the closed end of said first named coupling
member, and means for limiting the movement of said sealing disk in
the direction of said second coupling member."
The claimed combination is therefore of four things: (1) a type
of pin fitting which was old in the art; (2) a pump for creating
pressure, which was old; (3) a hose to connect the two, and (4) a
well known type of coupler, the only novel feature of which is the
perforated sealing disk mounted to reciprocate in the bore of the
coupler with means for yieldingly pressing the disk against the end
of the pin fitting and means for limiting the movement of the disk
in the direction of the pin fitting (which
Page 298 U. S. 420
signifies merely some sort of shoulder at the orifice of the
coupler to prevent the spring from forcing the disk out of the end
of the bore).
Nothing is said in specification or claims concerning the
release of the high pressure in the gun before uncoupling, but
evidently this must be done if the movement of the perforated disk
is to create a vacuum. The petitioner concedes that, if the high
pressure is maintained, the grease packed behind the washer will
move forward with it and not only prevent the creation of a vacuum
back of the washer, but continue to exude from the coupler through
the perforation in the washer. It is explained that the pressure
may be released by a slight retraction of the plunger in the grease
gun so as to permit the spring and washer to perform their function
of creating a suction when the pin and coupler are disengaged.
Claims 1 to 6, inclusive, and 8 and 10, have been repeatedly
held valid, but the invention has generally been limited to the
novel means whereby, upon the uncoupling of the gun from the pin
fitting, a suction is produced which removes excess lubricant from
the point of contact of the two members. Although, in the instant
cases, the validity of the claims is denied, we think they disclose
novelty and invention to the extent indicated.
Claims 14 and 15 are of a different order. Claim 15 may be taken
as typical. It is:
"15. The combination with a grease cup comprising a tubular
member having a closure seat, a closure, a pin extending through
said tubular member and from both sides thereof, and a spring
confined between said pin and closure, and tending to hold said
closure on its seat, of a grease pump having a discharge conduit,
and means co-acting with the ends of said pin for detachably
connecting the discharge end of said conduit with said grease
cup."
It will be noted that this claim describes a combination
consisting of the pin fitting of Gullborg's patent
Page 298 U. S. 421
No. 1,307,733, with any grease pump having a bayonet type
coupler. Nothing in the claim discloses the cup shaped
reciprocating disk yieldingly pressed forward against the closure
of the pin fitting. Grease guns having such a bayonet coupling were
old in the art. The question is whether claims 14 and 15, unless
restricted to the combination of a grease gun and coupler and a pin
fitting such as are described in the specifications of the patent,
are void as attempting to extend the monopoly of Gullborg's patent
No. 1,307,733, to exclude the use therewith of any grease gun
except one having the suction device of the patent in suit.
With this background, we pass to consideration of the specific
cases presented.
No. 23
The petitioner, as owner of the Gullborg patent, filed a bill in
the district court to restrain alleged infringement by the
respondent. The latter did not sell pin fittings, but did sell two
types of grease pumps. The slotted coupler of the first has no
slidably mounted cup-shaped perforated disk in its bore.
Confessedly there is no means for producing the suction effect
claimed for Gullborg's invention. The Circuit Court of Appeals,
reversing the decision of the district court, held that, in view of
the limited scope of the invention disclosed in claims 1 to 6,
inclusive, and 8 and 10, this device did not infringe. It further
decided that, as claims 14 and 15 must be limited to a combination
embracing couplers embodying the suction effect -- the only novel
feature of the patent -- or else be held void as attempting to gain
protection for something not covered by the invention, this grease
pump did not infringe those claims. The petitioner does not contest
the holdings. The second gun sold by the respondent combines a
receptacle containing grease under a pneumatic pressure of about
one hundred pounds, the
Page 298 U. S. 422
exit of which is connected to a pipe discharging into the
chamber of a plunger-operated pump and a hose attached at the base
of the pump chamber terminating in a coupling device like that of
the Gullborg patent. The method of operation is that, when the
plunger is retracted beyond the orifice of the supply pipe, grease
is forced into the pump chamber by the air pressure in the
receptacle. By the downward stroke of the plunger, the entrance to
the pump-chamber is closed and the grease therein forced into the
hose and through the coupling and pin fitting to the bearing. By
successive strokes, a very high pressure can be built up in the
hose. The Circuit Court of Appeals found, and we think correctly,
that, with this arrangement, it was impossible to release the
pressure in the grease line between the pump and the bearing before
uncoupling the hose from the pin fitting so as to permit the spring
to force the disk forward in the bore of the coupler and create a
suction as in Gullborg's patent, and that the accused device was
subject to the very exudation of grease at the point of union which
Gullborg's invention was intended to obviate. It therefore held
that the accused grease gun lacked the only novel feature of the
patented combination.
The decision went upon a question of fact. The petitioner
offered no evidence to prove that the accused device operated to
produce the suction effect claimed in the patent, but relied upon
the physical exhibits consisting of its own and the respondent's
apparatus and upon ocular demonstrations of their operation. The
respondent introduced evidence to show the absence of the suction
effect in its device, and combatted the inference sought to be
drawn from the physical operation of the two exhibits. We are
satisfied that the Circuit Court of Appeals was correct in its
decision that the accused device did not embody the novel feature
claimed in the patent.
Page 298 U. S. 423
As respects claims 14 and 15, which are for a combination of the
pin fitting covered by Gullborg's patent No. 1,307,733 with a
grease gun and coupler of any type, the Court of Appeals held that
these must be read as claiming a combination of the patented pin
fitting and a gun with the coupling device described in the
specifications and having the suction effect set forth in the other
claims, or must be held void as unlawful attempts to extend the
monopoly of the pin fitting which is described in patent 1,307,733.
The court sustained these claims by restricting their scope to
conform to the other claims based on the suction effect, and held
they were not infringed by the respondent's apparatus. We do not
understand the petitioner to seek a reversal of this holding. Its
petition for certiorari and the assignments of error are bare of
any attack upon this portion of the Circuit Court of Appeals'
decision. These claims, however, are drawn in question in No. 31
and may more properly be discussed in that connection.
No. 31
In this case, the respondent, as owner of the Gullborg patent
No. 1,307,734, sued the petitioners, who neither made nor sold pin
fittings of the type covered by Gullborg's patent No. 1,307,733 nor
grease pumps or guns having the coupler construction of those
described and claimed in the patent in suit. But the petitioners
did sell pin fittings of a type with which a grease gun of the
description of Gullborg's could be used, and grease guns having a
bayonet slotted coupler, which could be used either with the pin
fittings of Gullborg's patent No. 1,307,733 or with others not
covered thereby. These sales were charged to be contributory
infringements of patent No. 1,307,734. The District Court so held,
and the Circuit Court of Appeals affirmed.
What has been said with respect to claims 14 and 15 need not be
repeated. The petitioners' grease guns are
Page 298 U. S. 424
of an old unpatented type having couplers of a different
construction from that disclosed in the patent. There is no
assertion that they produce the suction effect of Gullborg's
invention. The petitioners' pin fittings are not of the type
described in Gullborg's patent No. 1,307,733.
The proofs establish that the prior art embraced the use in
combination of a grease gun composed of a chamber or pump, a hose,
a hose-coupler, and a spring-closed fitting, the coupling being of
the pin and slot or bayonet type. The respondent's position is,
nevertheless, that if the petitioners furnish a gun, a part of this
old unpatented and unpatentable combination, for use with the
patented pin fitting of Gullborg's No. 1,307,733, they
contributorily infringe claims 14 and 15 of the patent in suit
because those claims describe the combination of any grease gun
with the patented pin fittings. Again, the respondent says that, as
pin fittings made in accordance with the prior art, but susceptible
of use with a gun covered by the patent in suit, were sold by
petitioners, these sales constituted contributory infringements of
all the claims of he patent.
It is plain that Gullborg invented improvements of two of the
mechanical elements of an old combination consisting of grease
pump, hose, hose-coupler, and a grease cup or pin fitting. First,
he contrived an improved pin fitting. This he patented as such. No.
1,307,733. Secondly, he invented an improved form of coupler to be
attached to the end of the hose leading from the pump to the
fitting. Instead of patenting this, as he did the pin fitting, he
claimed a combination of pump, hose-coupler, and pin fitting, and
embodied in the combination his improved form of coupler. (No.
1,307,734, the patent in suit, claims 1-6, 8, and 10.) He further
claimed the combination between his patented pin fitting and any
form of grease gun, whether that
Page 298 U. S. 425
claimed in his patent or unpatented and old in the art. (Claims
14 and 15.) The question, then, is whether, by this method, the
patentee, by improving one element of an old combination whose
construction and operating is otherwise unchanged, may in effect
repatent the old combination by reclaiming it with the improved
element substituted for the old element. That this cannot be done
is known by numerous cases in this and other federal courts.
[
Footnote 4]
Leeds & Catlin Co. v. Victor Talking Machine Co.,
213 U. S. 301,
213 U. S. 325, on
which the respondent relies, is not in point. There, the patent was
a pioneer patent, and the combination was of elements which were
novel and neither of which possessed utility without the other.
Each element was necessary to the operation of the other. The
invention did not, as here, consist of the mere improvement of one
element of an old combination.
We are of the opinion that the owner of the patents cannot
extend the monopoly of its patent for a pin fitting to preclude the
use therewith of any grease gun not embodying the improvement in
the coupling device evidenced by the patent in suit, and cannot
extend the monopoly of the combination patent in suit to prevent
the use of a pin fitting which does not infringe the fitting
patent, 1,307,733, with a gun having a coupler such as that claimed
in the patent in suit.
Page 298 U. S. 426
In No. 23, the decree is affirmed. In No. 31, the decree is
reversed, and the cause remanded for further proceedings in
conformity with this opinion.
So ordered.
THE CHIEF JUSTICE took no part in the consideration or decision
of these cases.
* Together with No. 31,
Rogers et al. v. Alemite
Corporation. Certiorari to the Circuit Court of Appeals for
the Third Circuit.
[
Footnote 1]
Hollingshead Co. v. Bassick Mfg. Co., 73 F.2d 543.
[
Footnote 2]
Rogers v. Alemite Corp., 74 F.2d 1019.
[
Footnote 3]
Many district court decisions are unreported. Reported decisions
in district and circuit courts of appeal are:
Bassick Mfg. Co.
v. Auto Equipment Co., 13 F.2d 463;
Lyman Mfg. Co. v.
Bassick Mfg. Co., 18 F.2d 29;
Bassick Mfg. Co. v. Standard
Products Mfg. Co., 19 F.2d 937;
Bassick Mfg. Co. v. Larkin
Automotive Parts Co., 19 F.2d 939;
Larkin Automotive Parts
Co., 19 F.2d 944;
Bassick Mfg. Co. v. Ready Auto Supply
Co., Inc., 22 F.2d
331;
Bassick Mfg. Co. v. C.P. Rogers & Co., 26
F.2d 724;
Alemite Mfg. Corp. v. Hi-Pressure Sales Co.,
Inc., 33 F.2d 912;
Bassick Mfg. Co. v. Adams Grease Gun
Corp., 39 F.2d 904; 52 F.2d 36;
Bassick Mfg. Co. v. United
Grease Gun Corp., 40 F.2d 549;
Alemite Corp. v. Lubrair
Corp., 62 F.2d 899.
[
Footnote 4]
Edison Electric Light Co. v. Peninsular Light, P. & H.
Co., 101 F. 831;
Heald v. Rice, 104 U.
S. 737,
104 U. S. 755;
Underwood v. Gerber, 149 U. S. 224,
149 U. S. 227,
149 U. S. 229;
Morgan Envelope Co. v. Albany Perforated Wrapper Paper
Co., 152 U. S. 425,
152 U. S.
431-432;
Carbice Corp. v. American Patents
Development Corp., 283 U. S. 27,
283 U. S. 31-32;
Wagner Typewriter Co. v. F. S. Webster Co., 144 F. 405,
409;
Langan v. Warren Axe & Tool Co., 184 F. 720;
Harvey Hubbell, Inc. v. General Electric Co., 267 F. 564;
Troy Wagon Works Co. v. Ohio Trailer Co., 274 F. 612;
General Electric Co. v. Ohio Brass Co., 277 F. 917;
Radio Corp. v. Lord, 28 F.2d 257;
Wall Pump & C.
Co. v. Gardner Governor Co., 28 F.2d 334.