US3719347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum anchored pulling device
Assignee: Individual
•
Filing: 1971-09-22
•
Granted: 1973-03-06
•
Expires: 1991-09-22
Abstract
Abstract A pulling device used in automobile body repair work. A power operated post is pivoted on a vacuum anchor pad resting on a floor. The post is connected by a chain and a vacuum cup or the like to the part to be pulled. An extension leg on the anchor pad increases the pulling force which the device can exert without separation of the anchor pad from the floor.
Inventors
- 👤 R Wolgast
- 👤 B Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:02
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/12; Y; Y10; Y10S; Y10S72/00; Y10S72/705
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A portable pulling device including a base having a downwardly projecting annular seal adapted to engage a floor and define a vacuum chamber, a post pivoted on said base, a leg having one end thereof positioned on said base and having a foot at its opposite end adapted to engage the floor, an extensible force applying device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 2
Dependent Claim
95 words
A portable pulling device including a base having a downwardly projecting annular seal adapted to engage a floor and define a vacuum chamber, a post pivoted on said base, a leg having one end thereof positioned on said base and having a foot at its opposite end adapted to engage the floor, an extensible force applying device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 3
Dependent Claim
95 words
A portable pulling device including a base having a downwardly projecting annular seal adapted to engage a floor and define a vacuum chamber, a post pivoted on said base, a leg having one end thereof positioned on said base and having a foot at its opposite end adapted to engage the floor, an extensible force applying device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 4
Dependent Claim
95 words
A portable pulling device including a base having a downwardly projecting annular seal adapted to engage a floor and define a vacuum chamber, a post pivoted on said base, a leg having one end thereof positioned on said base and having a foot at its opposite end adapted to engage the floor, an extensible force applying device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 5
Dependent Claim
41 words
A structure as set forth in claim 1 in which said leg is provided at one end thereof with downwardly open slot means operable to receive portions of said base to prevent longitudinal movement of said leg relative to said base.
Claim 6
Dependent Claim
22 words
A structure as set forth in claim 1 including adjustable means on said post for connection to a chain or the like.
Claim 7
Dependent Claim
18 words
A structure as set forth in claim 1 in which said force applying device comprises a hydraulic cylinder.
Claim 8
Dependent Claim
45 words
A structure as set forth in claim 1 in which said force applying device comprises a hydraulic cylinder which is abutable without positive connection at one end thereof with said leg and which has a piston rod abutable at its free end with said post.
Claim 9
Dependent Claim
125 words
A portable pulling device including a base having spaced rib means integrally formed on the upper surface thereof and a downwardly projecting annular seal on the lower surface thereof adapted to engage a floor and define a vacuum chamber, fastener means supported on said rib means, a post pivoted on said fastener means, a leg having recess means on one end thereof engageable with one of said rib and fastener means and a foot at its opposite end engageable with the floor, an extensible power operated device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 10
Dependent Claim
125 words
A portable pulling device including a base having spaced rib means integrally formed on the upper surface thereof and a downwardly projecting annular seal on the lower surface thereof adapted to engage a floor and define a vacuum chamber, fastener means supported on said rib means, a post pivoted on said fastener means, a leg having recess means on one end thereof engageable with one of said rib and fastener means and a foot at its opposite end engageable with the floor, an extensible power operated device mounted at one end thereof on said leg and associated at its opposite end with said post to apply a pivoting force thereto, whereby the reaction to said pivoting force is received by said base and said foot.
Claim 11
Dependent Claim
40 words
The structure set forth in claim 6 wherein said fastener means comprises a bolt having a head and a nut threaded thereon and in which said recess means is engageable with said nut and with the head of said bolt.
Claim 12
Dependent Claim
24 words
The structure set forth in claim 6 in which said recess means comprises a pair of spaced downwardly facing recesses receiving said rib means.
References Cited (Backward Citations)
US2901022A
Cited
US3584836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |