US1377563A - Tire-inflating pump - Google Patents
Tire-inflating pump Download PDFInfo
- Publication number
- US1377563A US1377563A US41175920A US1377563A US 1377563 A US1377563 A US 1377563A US 41175920 A US41175920 A US 41175920A US 1377563 A US1377563 A US 1377563A
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- United States
- Prior art keywords
- standard
- base
- pump
- hand lever
- pivoted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B33/00—Pumps actuated by muscle power, e.g. for inflating
- F04B33/005—Pumps actuated by muscle power, e.g. for inflating specially adapted for inflating tyres of non-motorised vehicles, e.g. cycles, tricycles
Definitions
- the invention relates to that type of pump in which the barrel is pivoted at its lower end upon a base and in which the base is provided with a vertical standard or support which is gripped at itsupper end by one hand, the hand lever for operating the pump being pivoted to the upper end or" the standard or support and being pivoted to the pump rod intermediate of its ends.
- the base has hitherto extended on the same side of the standard or support as the hand lever or else the base has been quite narrow and has extended on either side of the standard or support.
- this latter type of pump it has been proposed to rock the standard in the act of pumping.
- the object of the present invention is to improve this type of pump so that a longer stroke of the hand lever may be obtained without unduly stooping and so that the hand lever assumes a better position for effective work especially toward the end of the stroke when most power is required.
- the base extends to a considerable extent on the opposite side of the standard to that on which the hand lever is located and the standard and base are rocked, in the act of pumping on the outer end of the base.
- he base therefore becomes more and more ver tical as the stroke of the pump progresses until it is almost or completely vertical at the end of the stroke, thereby raising the lower end of the pump barrel to an extent approximately equal to the length 01" the base.
- the base returns to its original horizontal position lowering the pump, consequently the outer end of the hand lever is brought into a convenient position at the commencement'of the stroke.
- the hand lever as heretofore is pivoted intermediate of its ends to the pump rod and the upper end is in alinement with the Specification of Letters Patent.
- the hand lever is bent outward for a short distance only and is then bent parallel or approximately parallel to the upper part thereof so that the outer end of the hand lever is parallel or approximately parallel to the pump barrel at the lower endor". the stroke.
- This method of bending the hand lever brings its outer end lower at the commencement of the stroke than in previous constructions and brings it horizontal or approximately horizontal at the end 1 the stroke and in a good position to apply the weight of the body in driving the compressed air out of. the pump. ()wing however to the base being approximately vertical at this time the hand lever is well raised above the ground.
- Fig. 3 is a side elevation
- Fig. 4 is a plan
- Fig. .5 is a front elevation of the lower part of a pump showing a modification
- Fig. 6 is a cross section to an enlarged scale on the line 6-6 of Fig. 3.
- Fig. 7 is a side elevation showing the base and stay rods folded.
- Fig. 8 is a side elevation and Fig. 9 is plan showing aiurther modification.
- a aare strips of metal connected together at their upper and lower ends thus forming a knob 54 to be gripped with one hand and at their lower ends they are mounted on pair of feet a
- the knob a is shown in full lines at the extreme top of the standard a a. Ii": desired the knob may be arranged slightly lower and at the side of the standard as shown in dotted lines at a in two places. By thus lowering he position of the knob the pump is rendered more suitable for short persons.
- the knobs a or e are preferably mounted loosely on central spindle a so that they may rotate in the act of pumping. It the knobs be fixtures on the standard a 0; they must slip within the hand in the act of pumping.
- the base consists of two parallel members Z) 2') connected at their outer ends at 6 These three parts are made from a sin e strip of metal fixed b to the standard a a.
- the members F) F) are connected by stay rods o b to the standard a a at b
- the base is provided at its outer nd with feet Z5
- the parts 6 and b may be pivoted to the standard a at Z2 and b and they may be connected together by means of thumb screws b thus enabling the parts to be tolded as shown in Fig. 7.
- the stay rods Z9? Z2 are preferably connected by a cross rod 6 curved at its center to fit the pump barrel when the parts are folded. his crossrod b supports'the flexible air delivery pipe when this latter not supported by the clip f and prevents the tube being bent sharply at its lowest end. 7
- 0 is the pump barrel pivoted at c to a cross pi ce 0 fixed to the lower part of the standard a a.
- d d is the hand lever pivoted at one end at (Z to the standard a, a and pivoted intermediate oi its ends at a' to the pump rod 0
- the hand lever has a portion (Z which is in alinement with the pump rod 0 at the end of the downward stroke of this latter.
- the hand lever is then curved outward from the point (2 where it is pivoted to the pump rod 0 and its outer or handle end al is bent so that it is nearly parallel the pump barrel 0 at the end of its downward stroke. This form of hand lever prevents the outer end thereof being unduly raised at the commencement or the pressure stroke.
- g is a stop to limit the motion of the hand lever at the end of the pressure stroke.
- the base has a fixed length but it may be desirable to make the length of the base adjustable thereby enabling the lower part of the pump barrel and consequently the hand lever to be adjusted with respect to the ground at the end of the pressure stroke to suit people of various heights.
- Such an adjustable base is shown in Figs. 3 to 6.
- the side members i) Z) and the stays b are similar to those shown in Figs. 1 and 2 except that the lower ends of the stays in Figs. 3 to 5 are located within the members Z) Z) instead oi on the outside as in Figs. 1 and 2.
- a sliding extension consisting ot side members B B and a connection B To this latter are fixed the feet If upon which the whole apparatus rocks in the act oi pumping as previously described.
- the side members B, B have slides B which partlv surround the side members 6 Z) and slide thereon.
- the side members B, B and 6, Y) are both provided with perforations B and pins 13* are passed through corresponding perforations thereby retaining the sliding members B B fixed on the other members 6, Z).
- the base instead of rocking on feet on the ground, is pivoted to a base board it and he feet a instead or standing on the ground stand on said base board it.
- the base board it has a block i mounted on a vertical pivot 2' carried by the base board It. To this block 2' are horizontally pivoted at 2' the side members 6 Z) of the base.
- This construction allows the whole appartus to be turned on the vertical pivot 2' into the position shown in Fig. 9 when a toot may be placed on the base board 11. to keep the same steady.
- An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standand 2 and of ard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
- An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near tothe lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof and means for adjusting the length of said base substantially as set forth.
- An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near tothe lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and having two straight portions connected by a bent portion where it is pivoted to the pump rod and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
- An air pump having in combination a standard, a handle on the side of the standard and at the upper end thereof, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
- Anair pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof, an extension adapted to slide on said base, the said base and sliding extension having corresponding apertures, and pins passed through corresponding apertures, substantially as set forth.
- An air pump' having in combination a standard, a handle at the upper end of the standard, a pin carried by said standard on which the handle is pivoted, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of itsends to the pump rod, said handle extending and operating on one side of the standard, and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof, substantially as set forth.
- An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end, stay rods pivoted at their upper ends to the standard and means for connecting the lower ends of the stay rods to the base substantially as set forth.
- An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end, stay rods pivoted at their upper ends to the standard, means for connecting the lower t0 the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, a base board, a block ertieaily pivoted to the base board and to which block the base is pivoted at its outer end, feet on the lower end of the stand-and and clips carried by the base beard beneath which the 10 feet engage substantiaiiy as set
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
T. M. DAVIES.
TlRE INFLATING PUMP.
APPLICATION FILED SEPT 21. 192 0.
Patented May 10,1921.
3 SHEETS-SHEET l.
T. M. DAVIES. TIRE IN FLATING PUMP.
APPLICATION FILED SEPT 21(1920.
1,377,563. Patented May 10,1921.
3 SHEETS SHEET 2.
' 4 I /B l .Mww ,T i B A 13 T. M. DAVIES.
TIRE INFLATING PUMP.
APPLICATION FILED SEPT 21, 192 0.
Patented May 10, 1921.
3 SHEETS-SHEET 3- v THOMAS MORRIS DAVIES, OF LLANELLY, WALES.
TIREJNFLATING PUMP.
To all whom it may concern:
Be it known that I, THOMAS Moinns DAVIES, a subject of the King of Great Britain, residing at Llanelly, in the county of Carmarthen, Wales, have invented a new and useful Tire-inflating Pump, of which the following is a specification.
The invention relates to that type of pump in which the barrel is pivoted at its lower end upon a base and in which the base is provided with a vertical standard or support which is gripped at itsupper end by one hand, the hand lever for operating the pump being pivoted to the upper end or" the standard or support and being pivoted to the pump rod intermediate of its ends. In such pumps the base has hitherto extended on the same side of the standard or support as the hand lever or else the base has been quite narrow and has extended on either side of the standard or support. In this latter type of pump it has been proposed to rock the standard in the act of pumping.
The object of the present invention is to improve this type of pump so that a longer stroke of the hand lever may be obtained without unduly stooping and so that the hand lever assumes a better position for effective work especially toward the end of the stroke when most power is required.
According to the present invention the base extends to a considerable extent on the opposite side of the standard to that on which the hand lever is located and the standard and base are rocked, in the act of pumping on the outer end of the base. he base therefore becomes more and more ver tical as the stroke of the pump progresses until it is almost or completely vertical at the end of the stroke, thereby raising the lower end of the pump barrel to an extent approximately equal to the length 01" the base. Then as the hand lever is raised to draw air into the pump barrel the base returns to its original horizontal position lowering the pump, consequently the outer end of the hand lever is brought into a convenient position at the commencement'of the stroke.
The hand lever as heretofore is pivoted intermediate of its ends to the pump rod and the upper end is in alinement with the Specification of Letters Patent.
Patented May 10, 1921.
Application filed. September 21, 1920. Serial No. $11,759.
pump rod at the lower end of the stroke. From the point where it is pivoted to the pump rod, the hand lever is bent outward for a short distance only and is then bent parallel or approximately parallel to the upper part thereof so that the outer end of the hand lever is parallel or approximately parallel to the pump barrel at the lower endor". the stroke. This method of bending the hand lever brings its outer end lower at the commencement of the stroke than in previous constructions and brings it horizontal or approximately horizontal at the end 1 the stroke and in a good position to apply the weight of the body in driving the compressed air out of. the pump. ()wing however to the base being approximately vertical at this time the hand lever is well raised above the ground.
lhe invention is illustrated in the accompanying drawings in which Figure l is a side elevation of a pump and Fig. 2 is a front elevation of the same partly in section.
3 is a side elevation, Fig. 4 is a plan and Fig. .5 is a front elevation of the lower part of a pump showing a modification, Fig. 6 is a cross section to an enlarged scale on the line 6-6 of Fig. 3. Fig. 7 is a side elevation showing the base and stay rods folded.
Fig. 8 is a side elevation and Fig. 9 is plan showing aiurther modification.
in the construction shown in Figs. 1. to 7 a aare strips of metal connected together at their upper and lower ends thus forming a knob 54 to be gripped with one hand and at their lower ends they are mounted on pair of feet a In Figs. .1 and 2 the knob a is shown in full lines at the extreme top of the standard a a. Ii": desired the knob may be arranged slightly lower and at the side of the standard as shown in dotted lines at a in two places. By thus lowering he position of the knob the pump is rendered more suitable for short persons. The knobs a or e are preferably mounted loosely on central spindle a so that they may rotate in the act of pumping. It the knobs be fixtures on the standard a 0; they must slip within the hand in the act of pumping.
The base consists of two parallel members Z) 2') connected at their outer ends at 6 These three parts are made from a sin e strip of metal fixed b to the standard a a. The members F) F) are connected by stay rods o b to the standard a a at b The base is provided at its outer nd with feet Z5 The parts 6 and b may be pivoted to the standard a at Z2 and b and they may be connected together by means of thumb screws b thus enabling the parts to be tolded as shown in Fig. 7. The stay rods Z9? Z2 are preferably connected by a cross rod 6 curved at its center to fit the pump barrel when the parts are folded. his crossrod b supports'the flexible air delivery pipe when this latter not supported by the clip f and prevents the tube being bent sharply at its lowest end. 7
0 is the pump barrel pivoted at c to a cross pi ce 0 fixed to the lower part of the standard a a.
d d is the hand lever pivoted at one end at (Z to the standard a, a and pivoted intermediate oi its ends at a' to the pump rod 0 The hand lever has a portion (Z which is in alinement with the pump rod 0 at the end of the downward stroke of this latter. The hand lever is then curved outward from the point (2 where it is pivoted to the pump rod 0 and its outer or handle end al is bent so that it is nearly parallel the pump barrel 0 at the end of its downward stroke. This form of hand lever prevents the outer end thereof being unduly raised at the commencement or the pressure stroke.
6 is the usual pressure gage, and g is a stop to limit the motion of the hand lever at the end of the pressure stroke.
6 is a foot standing outward from the base to prevent the pump falling over toward the hand lever (Z d if this latter be raised without gripping one of the knobs a or a The foot 6 standing out beyond the pressure gage 6 also to some extent protects the latter.
Tn use the pump is rocked on the feet 7); At the right side of Fig. 1 the hand lever (Z d ythe pump rod 0 and the pump barrelc are shown in the position they assume at the commencement of the pressure stroke. As the hand lever d is depressed the knob a? or a is moved to the left in the direction or the arrow and the whole apparatus rocks on the feet Z2 At tie left side oi? Fig. 1 the parts are shown in the position they assume about hali way through the pressure stroke. The parts are rocked still further around the point where the feet Z2 rest on the ground, toward the end of the stroke, so that the members Z 7) assume a more vertical position at the end of the pressure stroke.
This rocking of the parts prevents the outer end (Z of the hand lever being unduly raised at the commencement of the pressure stroke and it prevents the hand lever being unduly depressed at the end of the said stroke notwithstanding that the movement of the hand lever is considerable.
1n the construction shown in Figs. 1 and 2 the base has a fixed length but it may be desirable to make the length of the base adjustable thereby enabling the lower part of the pump barrel and consequently the hand lever to be adjusted with respect to the ground at the end of the pressure stroke to suit people of various heights. Such an adjustable base is shown in Figs. 3 to 6. The side members i) Z) and the stays b are similar to those shown in Figs. 1 and 2 except that the lower ends of the stays in Figs. 3 to 5 are located within the members Z) Z) instead oi on the outside as in Figs. 1 and 2. On the members I; b is mounted a sliding extension consisting ot side members B B and a connection B To this latter are fixed the feet If upon which the whole apparatus rocks in the act oi pumping as previously described. The side members B, B have slides B which partlv surround the side members 6 Z) and slide thereon. The side members B, B and 6, Y) are both provided with perforations B and pins 13* are passed through corresponding perforations thereby retaining the sliding members B B fixed on the other members 6, Z).
In the modification shown in Figs. 8 and 9 the base, instead of rocking on feet on the ground, is pivoted to a base board it and he feet a instead or standing on the ground stand on said base board it.
The base board it has a block i mounted on a vertical pivot 2' carried by the base board It. To this block 2' are horizontally pivoted at 2' the side members 6 Z) of the base. This construction allows the whole appartus to be turned on the vertical pivot 2' into the position shown in Fig. 9 when a toot may be placed on the base board 11. to keep the same steady.
To the s des of the base board 72. are atached spring clips j which spring over the J a? wh ii these latter are standing on the e board it. The feet a may easily be d dow i into position between the spring j 7' or they may be pulled up from beneath the clips j j as these latter are carried by ong springs 7 7 the pump is used exactly as described i'vith respect to Figs. 1' and 2 as the whole apparatus can rock on the pivots at Corresponding parts of Figs. 1 Figs. 8 and 9 are marked with corresponding letters of reference.
'W hat 1 claim as my invention is 1. An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standand 2 and of ard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
2. An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near tothe lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof and means for adjusting the length of said base substantially as set forth.
3. An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near tothe lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and having two straight portions connected by a bent portion where it is pivoted to the pump rod and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
4. An air pump having in combination a standard, a handle on the side of the standard and at the upper end thereof, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof substantially as set forth.
5. Anair pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof, an extension adapted to slide on said base, the said base and sliding extension having corresponding apertures, and pins passed through corresponding apertures, substantially as set forth.
6. An air pump'having in combination a standard, a handle at the upper end of the standard, a pin carried by said standard on which the handle is pivoted, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of itsends to the pump rod, said handle extending and operating on one side of the standard, and a base fixed to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end thereof, substantially as set forth.
7. An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end, stay rods pivoted at their upper ends to the standard and means for connecting the lower ends of the stay rods to the base substantially as set forth.
8. An air pump having in combination a standard, a handle at the upper end of the standard, a pump barrel pivoted near to the lower end of the standard, a hand lever pivoted near to the upper end of the standard and pivoted intermediate of its ends to the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, said base being adapted to allow the whole apparatus to rock on the outer end, stay rods pivoted at their upper ends to the standard, means for connecting the lower t0 the pump rod, said handle extending and operating on one side of the standard, a base pivoted to said standard and extending substantially on the opposite side of the standard to that on which the hand lever extends, a base board, a block ertieaily pivoted to the base board and to which block the base is pivoted at its outer end, feet on the lower end of the stand-and and clips carried by the base beard beneath which the 10 feet engage substantiaiiy as set forth.
In Witness whereof I have set i y hand.
THOMAS MQRRIS DAVIES.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41175920 US1377563A (en) | 1920-09-21 | 1920-09-21 | Tire-inflating pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41175920 US1377563A (en) | 1920-09-21 | 1920-09-21 | Tire-inflating pump |
Publications (1)
Publication Number | Publication Date |
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US1377563A true US1377563A (en) | 1921-05-10 |
Family
ID=23630194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US41175920 Expired - Lifetime US1377563A (en) | 1920-09-21 | 1920-09-21 | Tire-inflating pump |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080034960A1 (en) * | 2006-08-12 | 2008-02-14 | Moss Robert A | Air pump |
US20100150758A1 (en) * | 2006-08-12 | 2010-06-17 | Moss Robert A | Air pump |
-
1920
- 1920-09-21 US US41175920 patent/US1377563A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080034960A1 (en) * | 2006-08-12 | 2008-02-14 | Moss Robert A | Air pump |
US7637203B2 (en) | 2006-08-12 | 2009-12-29 | Moss Robert A | Air pump |
US20100150758A1 (en) * | 2006-08-12 | 2010-06-17 | Moss Robert A | Air pump |
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