US4140036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting pipe insulation
Assignee: Individual
•
Filing: 1977-09-23
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Granted: 1979-02-20
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Expires: 1997-09-23
Abstract
Abstract An apparatus for making semi-circular pipe insulation segments from a block of foamed glass of like foamed, expanded or cellular plastics or elastomers having reciprocating adjustable cutter members mounted on a reciprocating frame structure, which cutter member travels in an arcuate path through the block placed below the cutter members, the improvement of which comprises a rigid adjustable blade assembly.
Inventors
- 👤 William L. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:50
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/006; B23; B23D; B23D49/00; B23D49/003; B27; B27B; B27B19/00; B28; B28D; B28D1/00; B28D1/30; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/687; Y10T83/6905; Y10T83/698; Y10T83/929; Y10T83/937
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
285 words
An apparatus for cutting semi-circular segments of insulation material from a block of insulation material having a stationary vertically extending framework including pairs of spaced apart supports, means for supporting the block in a fixed position between the supports, a reciprocating framework mounted for movement between the pairs of spaced apart supports, a saw assembly mounted for movement with the reciprocating framework, a second means for rotating the saw assembly to cut the semi-circular segments from the block when the framework is reciprocated, the improvement of which comprises: (a) a first saw end support assembly attached to one end of a first rotatable shaft attached to said reciprocating framework, said first saw end support assembly comprising a first block having extending separated shoulder sections attached thereto to form a first cavity into which fits a first blade carrying means and to form a first slit through which saw blades are removably attachable to one end of said first blade, (b) a second saw end support assembly attached to one end of a second rotatable shaft attached to said reciprocating framework, said second saw end support assembly comprising a second block having extending separate second shoulder sections attached theeto to form a second cavity into which fits a second blade carrying means and to form a second slit through which can pass said saw blades which are removably attachable to one end of said second blade carrying means, said second block having a slot extending parallel to said second slit through which one end of said saw blade can extend, and (c) a removable securing means attached to said second shoulder sections to prevent said second blade carrying means from being removed from said second cavity.
Claim 2
Independent Claim
285 words
An apparatus for cutting semi-circular segments of insulation material from a block of insulation material having a stationary vertically extending framework including pairs of spaced apart supports, means for supporting the block in a fixed position between the supports, a reciprocating framework mounted for movement between the pairs of spaced apart supports, a saw assembly mounted for movement with the reciprocating framework, a second means for rotating the saw assembly to cut the semi-circular segments from the block when the framework is reciprocated, the improvement of which comprises: (a) a first saw end support assembly attached to one end of a first rotatable shaft attached to said reciprocating framework, said first saw end support assembly comprising a first block having extending separated shoulder sections attached thereto to form a first cavity into which fits a first blade carrying means and to form a first slit through which saw blades are removably attachable to one end of said first blade, (b) a second saw end support assembly attached to one end of a second rotatable shaft attached to said reciprocating framework, said second saw end support assembly comprising a second block having extending separate second shoulder sections attached theeto to form a second cavity into which fits a second blade carrying means and to form a second slit through which can pass said saw blades which are removably attachable to one end of said second blade carrying means, said second block having a slot extending parallel to said second slit through which one end of said saw blade can extend, and (c) a removable securing means attached to said second shoulder sections to prevent said second blade carrying means from being removed from said second cavity.
Claim 3
Dependent Claim
27 words
An apparatus according to claim 1 wherein said first and second blade carrying means comprise a bar member having bar slots in which said saw blades fit.
Claim 4
Dependent Claim
42 words
An apparatus according to claim 2 wherein both of said blade carrying means comprise a positioning member attached perpendicularly to said bar member and extends outward a sufficient distance to strike said blocks when said bar members are slid into said cavities.
References Cited (Backward Citations)
US3212376A
Cited
US3518906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |